Water Quality in LYONS, CO (80540)

EPA violation data for public water systems serving ZIP code 80540.

291

Total Violations

Health-Based

215

Monitoring / Reporting

290

Resolved

What does this mean?

290 of 291 violations have been resolved. 76 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 215 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.

Water systems: 13 Population served: 4,302

Violations Detail (291 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Public Notice	Monitoring	N/A	N/A	Sep 1, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Sep 1, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.224	Jun 30, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.224	Jun 30, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.224	Jun 30, 2025	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.071	Jun 30, 2025	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.071	Jun 30, 2025	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.071	Jun 30, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.067	Mar 31, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.192	Mar 31, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.192	Mar 31, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.192	Mar 31, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.192	Mar 31, 2025	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.067	Mar 31, 2025	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.067	Mar 31, 2025	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.067	Mar 31, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2025	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2025	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2025	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 28, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 28, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 28, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.093	Dec 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.093	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.178	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.178	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.178	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.178	Dec 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.093	Dec 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.093	Dec 31, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Health-Based	N/A	N/A	Nov 30, 2024	Resolved	N/A
Surface Water Treatment Rule	Health-Based	N/A	N/A	Nov 30, 2024	Resolved	N/A
Surface Water Treatment Rule	Health-Based	N/A	N/A	Nov 30, 2024	Resolved	N/A
Surface Water Treatment Rule	Health-Based	N/A	N/A	Nov 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 3, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 3, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.081	Sep 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.081	Sep 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.155	Sep 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.155	Sep 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.155	Sep 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.155	Sep 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.081	Sep 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.081	Sep 30, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.092	Jun 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.092	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.131	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.131	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.131	Jun 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.092	Jun 30, 2024	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Jun 2, 2024	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Jun 2, 2024	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Jun 2, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2024	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2024	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2024	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.09665	Mar 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.09665	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.11403	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.11403	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.11403	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.11403	Mar 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.09665	Mar 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.09665	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.11465	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.11465	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.11465	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.11465	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07465	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07465	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07465	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07465	Dec 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07	Sep 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.103	Sep 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.103	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.103	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.103	Sep 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07	Sep 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jul 23, 2023	Active	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 17, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 17, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 17, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 17, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 15, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jul 17, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jul 17, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2022	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
E. COLI	Monitoring	0	N/A	Nov 30, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Nov 30, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Chlorine	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	Eye and nose irritation; stomach discomfort
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
E. COLI	Monitoring	0	N/A	Aug 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
2,4-D	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
E. COLI	Monitoring	0	N/A	May 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	May 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	May 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 9, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 9, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 9, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
E. COLI	Monitoring	0	N/A	Mar 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Mar 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Mar 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations

Lead & Copper Levels

Violation Timeline

2025(44)

Public Notice

Sep 1Resolved

Public Notice

Sep 1Resolved

TTHM

Jun 30Resolved

TTHM

Jun 30Resolved

TTHM

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Surface Water Treatment Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Surface Water Treatment Rule

Mar 31Resolved

Interim Enhanced Surface Water Treatment Rule

Mar 31Resolved

Interim Enhanced Surface Water Treatment Rule

Mar 31Resolved

Interim Enhanced Surface Water Treatment Rule

Mar 31Resolved

Surface Water Treatment Rule

Mar 31Resolved

Surface Water Treatment Rule

Mar 31Resolved

Surface Water Treatment Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Surface Water Treatment Rule

Feb 28Resolved

Surface Water Treatment Rule

Feb 28Resolved

Surface Water Treatment Rule

Jan 31Resolved

Surface Water Treatment Rule

Jan 31Resolved

Surface Water Treatment Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

2024(63)

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Surface Water Treatment Rule

Oct 31Resolved

Surface Water Treatment Rule

Oct 31Resolved

Surface Water Treatment Rule

Oct 31Resolved

Public Notice

Oct 3Resolved

Public Notice

Oct 3Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

TTHM

Sep 30Resolved

TTHM

Sep 30Resolved

TTHM

Sep 30Resolved

TTHM

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Surface Water Treatment Rule

Sep 30Resolved

Interim Enhanced Surface Water Treatment Rule

Sep 30Resolved

Interim Enhanced Surface Water Treatment Rule

Sep 30Resolved

Interim Enhanced Surface Water Treatment Rule

Sep 30Resolved

Surface Water Treatment Rule

Sep 30Resolved

Surface Water Treatment Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

TTHM

Jun 30Resolved

TTHM

Jun 30Resolved

TTHM

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

TTHM

Jun 2Resolved

TTHM

Jun 2Resolved

TTHM

Jun 2Resolved

Surface Water Treatment Rule

Apr 30Resolved

Interim Enhanced Surface Water Treatment Rule

Apr 30Resolved

Interim Enhanced Surface Water Treatment Rule

Apr 30Resolved

Interim Enhanced Surface Water Treatment Rule

Apr 30Resolved

Surface Water Treatment Rule

Apr 30Resolved

Surface Water Treatment Rule

Apr 30Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

2023(61)

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Interim Enhanced Surface Water Treatment Rule

Nov 30Resolved

Interim Enhanced Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Interim Enhanced Surface Water Treatment Rule

Nov 30Resolved

Interim Enhanced Surface Water Treatment Rule

Oct 31Resolved

Interim Enhanced Surface Water Treatment Rule

Oct 31Resolved

Interim Enhanced Surface Water Treatment Rule

Oct 31Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

TTHM

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

TTHM

Sep 30Resolved

TTHM

Sep 30Resolved

TTHM

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Interim Enhanced Surface Water Treatment Rule

Sep 30Resolved

Interim Enhanced Surface Water Treatment Rule

Sep 30Resolved

Interim Enhanced Surface Water Treatment Rule

Sep 30Resolved

Interim Enhanced Surface Water Treatment Rule

Aug 31Resolved

Interim Enhanced Surface Water Treatment Rule

Aug 31Resolved

Interim Enhanced Surface Water Treatment Rule

Aug 31Resolved

Interim Enhanced Surface Water Treatment Rule

Jul 31Resolved

Interim Enhanced Surface Water Treatment Rule

Jul 31Resolved

Interim Enhanced Surface Water Treatment Rule

Jul 31Resolved

Public Notice

Jul 23Active

Interim Enhanced Surface Water Treatment Rule

Jun 30Resolved

Interim Enhanced Surface Water Treatment Rule

Jun 30Resolved

Interim Enhanced Surface Water Treatment Rule

Jun 30Resolved

Interim Enhanced Surface Water Treatment Rule

May 31Resolved

Interim Enhanced Surface Water Treatment Rule

May 31Resolved

Interim Enhanced Surface Water Treatment Rule

May 31Resolved

Interim Enhanced Surface Water Treatment Rule

Apr 30Resolved

Interim Enhanced Surface Water Treatment Rule

Apr 30Resolved

Interim Enhanced Surface Water Treatment Rule

Apr 30Resolved

Surface Water Treatment Rule

Apr 30Resolved

Surface Water Treatment Rule

Apr 30Resolved

Surface Water Treatment Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Public Notice

Apr 17Resolved

Public Notice

Apr 17Resolved

Surface Water Treatment Rule

Jan 31Resolved

Surface Water Treatment Rule

Jan 31Resolved

Surface Water Treatment Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

2022(58)

Revised Total Coliform Rule

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

Surface Water Treatment Rule

Dec 31Resolved

Surface Water Treatment Rule

Dec 31Resolved

Surface Water Treatment Rule

Dec 31Resolved

Interim Enhanced Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Interim Enhanced Surface Water Treatment Rule

Nov 30Resolved

Interim Enhanced Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Public Notice

Oct 17Resolved

Public Notice

Oct 17Resolved

Groundwater Rule

Oct 15Resolved

Groundwater Rule

Oct 15Resolved

Groundwater Rule

Oct 15Resolved

Groundwater Rule

Oct 15Resolved

Groundwater Rule

Oct 15Resolved

Groundwater Rule

Oct 15Resolved

Groundwater Rule

Oct 15Resolved

Groundwater Rule

Oct 15Resolved

Groundwater Rule

Oct 15Resolved

Groundwater Rule

Oct 15Resolved

Groundwater Rule

Oct 15Resolved

Groundwater Rule

Oct 15Resolved

Surface Water Treatment Rule

Sep 30Resolved

Surface Water Treatment Rule

Sep 30Resolved

Interim Enhanced Surface Water Treatment Rule

Sep 30Resolved

Interim Enhanced Surface Water Treatment Rule

Sep 30Resolved

Interim Enhanced Surface Water Treatment Rule

Sep 30Resolved

Surface Water Treatment Rule

Sep 30Resolved

Public Notice

Jul 17Resolved

Public Notice

Jul 17Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Surface Water Treatment Rule

Jun 30Resolved

Surface Water Treatment Rule

Jun 30Resolved

Surface Water Treatment Rule

Jun 30Resolved

Surface Water Treatment Rule

Feb 28Resolved

Surface Water Treatment Rule

Feb 28Resolved

Surface Water Treatment Rule

Feb 28Resolved

Interim Enhanced Surface Water Treatment Rule

Feb 28Resolved

Interim Enhanced Surface Water Treatment Rule

Feb 28Resolved

Interim Enhanced Surface Water Treatment Rule

Feb 28Resolved

Surface Water Treatment Rule

Jan 31Resolved

Surface Water Treatment Rule

Jan 31Resolved

Surface Water Treatment Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

2021(65)

Revised Total Coliform Rule

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

Surface Water Treatment Rule

Dec 31Resolved

Surface Water Treatment Rule

Dec 31Resolved

Surface Water Treatment Rule

Dec 31Resolved

Surface Water Treatment Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

E. COLI

Nov 30Resolved

E. COLI

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Interim Enhanced Surface Water Treatment Rule

Oct 31Resolved

Interim Enhanced Surface Water Treatment Rule

Oct 31Resolved

Interim Enhanced Surface Water Treatment Rule

Oct 31Resolved

Surface Water Treatment Rule

Oct 31Resolved

Surface Water Treatment Rule

Oct 31Resolved

Surface Water Treatment Rule

Oct 31Resolved

Chlorine

Sep 30Resolved

Chlorine

Sep 30Resolved

Chlorine

Sep 30Resolved

Revised Total Coliform Rule

Aug 31Resolved

Surface Water Treatment Rule

Aug 31Resolved

Surface Water Treatment Rule

Aug 31Resolved

Surface Water Treatment Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

E. COLI

Aug 31Resolved

E. COLI

Aug 31Resolved

E. COLI

Aug 31Resolved

E. COLI

Jul 31Resolved

E. COLI

Jul 31Resolved

E. COLI

Jul 31Resolved

2,4-D

Jun 30Resolved

2,4-D

Jun 30Resolved

2,4-D

Jun 30Resolved

E. COLI

May 31Resolved

E. COLI

May 31Resolved

E. COLI

May 31Resolved

Revised Total Coliform Rule

May 9Resolved

Revised Total Coliform Rule

May 9Resolved

Revised Total Coliform Rule

May 9Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Surface Water Treatment Rule

Apr 30Resolved

Surface Water Treatment Rule

Apr 30Resolved

Surface Water Treatment Rule

Apr 30Resolved

Interim Enhanced Surface Water Treatment Rule

Mar 31Resolved

Interim Enhanced Surface Water Treatment Rule

Mar 31Resolved

Surface Water Treatment Rule

Mar 31Resolved

Surface Water Treatment Rule

Mar 31Resolved

Interim Enhanced Surface Water Treatment Rule

Mar 31Resolved

Surface Water Treatment Rule

Mar 31Resolved

E. COLI

Mar 31Resolved

E. COLI

Mar 31Resolved

E. COLI

Mar 31Resolved

How Does This Compare?

LYONS (80540) has 291 recorded violations, including 76 health-based. 1 remains unresolved. Consider testing your tap water independently for added peace of mind.

Recommended Water Filters

Based on the contaminants detected in your area, these filter types may help improve your water quality.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

UV Water Purifier

Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.

Targets:E. coli, Coliform, Giardia, Cryptosporidium

Look for:NSF/ANSI 55 (Class A) certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Always look for filters certified by NSF International for the specific contaminants you want to remove.

Water Quality in LYONS, CO (80540)

What does this mean?

Violations Detail (291 total)

Lead & Copper Levels

Violation Timeline

2025(44)

2024(63)

2023(61)

2022(58)

2021(65)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

Activated Carbon Filter

UV Water Purifier

Nearby ZIP Codes

Check Another ZIP Code