Water Quality in SANDY, OR (97055)

EPA violation data for public water systems serving ZIP code 97055.

282

Total Violations

Health-Based

192

Monitoring / Reporting

274

Resolved

What does this mean?

274 of 282 violations have been resolved. 90 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 192 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: 43 Population served: 17,740

Violations Detail (282 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Public Notice	Monitoring	N/A	N/A	Aug 22, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 22, 2025	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.061	Jun 30, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.087	Jun 30, 2025	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	May 22, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	May 22, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.083	Mar 31, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.083	Mar 31, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.083	Mar 31, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Mar 6, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.092	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.092	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.092	Dec 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07	Dec 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07	Dec 31, 2024	Resolved	N/A
Lead and Copper Rule	Health-Based	N/A	N/A	Dec 31, 2024	Active	N/A
Lead and Copper Rule	Health-Based	N/A	N/A	Dec 31, 2024	Active	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.068	Sep 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.068	Sep 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.068	Sep 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.086	Sep 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.086	Sep 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.086	Sep 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2024	Active	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2024	Active	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Sep 30, 2024	Active	N/A
COLIPHAGE	Monitoring	N/A	N/A	Aug 31, 2024	Resolved	N/A
E. COLI	Monitoring	0	N/A	Aug 11, 2024	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
COLIPHAGE	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.088	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.088	Jun 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.077	Jun 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.077	Jun 30, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.077	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.088	Jun 30, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2024	Active	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2024	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Mar 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Mar 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.083	Mar 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.083	Mar 31, 2024	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.083	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.092	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.092	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.092	Mar 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2024	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.075	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.087	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.087	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.087	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.075	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.075	Dec 31, 2023	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Nov 25, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Nov 25, 2023	Resolved	N/A
E. COLI	Monitoring	0	N/A	Oct 8, 2023	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.075	Sep 30, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.084	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.084	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.084	Sep 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.075	Sep 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.075	Sep 30, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2023	Active	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 25, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 25, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.077	Jun 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.077	Jun 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.077	Jun 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Jun 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.066	Jun 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.066	Jun 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.066	Jun 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Jun 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Jun 30, 2023	Resolved	N/A
Gross Alpha, Excl. Radon and U	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Combined Uranium	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2023	Resolved	N/A
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
Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 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
E. COLI	Monitoring	0	N/A	Apr 3, 2023	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Apr 2, 2023	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
TTHM	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.063	Mar 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.063	Mar 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.063	Mar 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Gross Alpha, Excl. Radon and U	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Combined Uranium	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.069	Dec 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.087	Dec 31, 2022	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 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	Oct 31, 2022	Resolved	N/A
Surface Water Treatment Rule	Health-Based	N/A	N/A	Sep 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Health-Based	N/A	N/A	Sep 30, 2022	Resolved	N/A
Surface Water Treatment Rule	Health-Based	N/A	N/A	Sep 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.087	Sep 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.071	Sep 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.071	Sep 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.071	Sep 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.087	Sep 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.087	Sep 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 28, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 28, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 28, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 28, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Aug 27, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Aug 27, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Aug 27, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Aug 27, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Aug 19, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Aug 19, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Aug 19, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jul 18, 2022	Resolved	N/A
E. COLI	Monitoring	0	N/A	Jul 16, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 16, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
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
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Lead and Copper 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
TTHM	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07	Jun 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07	Jun 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.07	Jun 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.082	Jun 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.082	Jun 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.082	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2022	Active	N/A
Lead and Copper 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	May 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.066	Mar 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.066	Mar 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.066	Mar 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.089	Mar 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.089	Mar 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.089	Mar 31, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Nitrate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
TTHM	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
COLIPHAGE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Nitrate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
TTHM	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Nitrate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Surface Water Treatment Rule	Health-Based	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	Health-Based	N/A	N/A	Oct 31, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Surface Water Treatment Rule	Health-Based	N/A	N/A	Sep 30, 2021	Resolved	N/A
Surface Water Treatment Rule	Health-Based	N/A	N/A	Sep 30, 2021	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Sep 30, 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	Jul 31, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2025(17)

Public Notice

Aug 22Resolved

Public Notice

Aug 22Resolved

Lead and Copper Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

TTHM

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Public Notice

May 22Resolved

Public Notice

May 22Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

Public Notice

Mar 6Resolved

Revised Total Coliform Rule

Jan 31Resolved

2024(62)

Lead and Copper Rule

Dec 31Resolved

TTHM

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Total Haloacetic Acids (HAA5)

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 31Active

Lead and Copper Rule

Dec 31Active

Total Haloacetic Acids (HAA5)

Sep 30Resolved

TTHM

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

TTHM

Sep 30Resolved

TTHM

Sep 30Resolved

TTHM

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Active

Consumer Confidence Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Active

Consumer Confidence Rule

Sep 30Resolved

Consumer Confidence Rule

Sep 30Active

COLIPHAGE

Aug 31Resolved

E. COLI

Aug 11Resolved

COLIPHAGE

Jul 31Resolved

Consumer Confidence Rule

Jun 30Resolved

COLIPHAGE

Jun 30Resolved

Lead and Copper Rule

Jun 30Resolved

Lead and Copper Rule

Jun 30Resolved

TTHM

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Revised Total Coliform Rule

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

TTHM

Jun 30Resolved

Lead and Copper Rule

Jun 30Active

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Revised Total Coliform Rule

May 31Resolved

TTHM

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

2023(84)

COLIPHAGE

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

TTHM

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

TTHM

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Endothall

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

COLIPHAGE

Dec 31Resolved

TTHM

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

TTHM

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Public Notice

Nov 25Resolved

Public Notice

Nov 25Resolved

E. COLI

Oct 8Resolved

Revised Total Coliform Rule

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Consumer Confidence Rule

Sep 30Resolved

TTHM

Sep 30Resolved

TTHM

Sep 30Resolved

TTHM

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Consumer Confidence Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Active

Consumer Confidence Rule

Sep 30Resolved

Consumer Confidence Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Aug 31Resolved

Public Notice

Aug 25Resolved

Public Notice

Aug 25Resolved

Lead and Copper Rule

Jun 30Resolved

Lead and Copper Rule

Jun 30Resolved

Lead and Copper Rule

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

TTHM

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

TTHM

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

TTHM

Jun 30Resolved

TTHM

Jun 30Resolved

Gross Alpha, Excl. Radon and U

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Uranium

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Surface Water Treatment Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Interim Enhanced Surface Water Treatment Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

E. COLI

Apr 3Resolved

E. COLI

Apr 2Resolved

TTHM

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Gross Alpha, Excl. Radon and U

Mar 31Resolved

Combined Uranium

Mar 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

2022(76)

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

TTHM

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Nitrate

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Oct 31Resolved

Surface Water Treatment Rule

Sep 30Resolved

Surface Water Treatment Rule

Sep 30Resolved

Surface Water Treatment Rule

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

TTHM

Sep 30Resolved

TTHM

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

TTHM

Sep 30Resolved

TTHM

Sep 30Resolved

Total Haloacetic Acids (HAA5)

Sep 30Resolved

TTHM

Sep 30Resolved

Public Notice

Aug 28Resolved

Public Notice

Aug 28Resolved

Public Notice

Aug 28Resolved

Public Notice

Aug 28Resolved

Groundwater Rule

Aug 27Resolved

Groundwater Rule

Aug 27Resolved

Groundwater Rule

Aug 27Resolved

Groundwater Rule

Aug 27Resolved

Revised Total Coliform Rule

Aug 19Resolved

Revised Total Coliform Rule

Aug 19Resolved

Revised Total Coliform Rule

Aug 19Resolved

Revised Total Coliform Rule

Jul 18Resolved

E. COLI

Jul 16Resolved

E. COLI

Jul 16Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Lead and Copper Rule

Jun 30Resolved

Lead and Copper Rule

Jun 30Resolved

Lead and Copper Rule

Jun 30Resolved

Lead and Copper Rule

Jun 30Resolved

Lead and Copper Rule

Jun 30Resolved

Lead and Copper Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

TTHM

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

Total Haloacetic Acids (HAA5)

Jun 30Resolved

TTHM

Jun 30Resolved

TTHM

Jun 30Resolved

TTHM

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Lead and Copper Rule

Jun 30Active

Lead and Copper Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

TTHM

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

TTHM

Mar 31Resolved

How Does This Compare?

SANDY (97055) has 282 recorded violations, including 90 health-based. 8 remain 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 SANDY, OR (97055)

What does this mean?

Violations Detail (282 total)

Lead & Copper Levels

Violation Timeline

2025(17)

2024(62)

2023(84)

2022(76)

2021(43)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

Activated Carbon Filter

UV Water Purifier

Nearby ZIP Codes

Check Another ZIP Code