Water Quality in TROY, MO (63379)

EPA violation data for public water systems serving ZIP code 63379.

217

Total Violations

Health-Based

122

Monitoring / Reporting

210

Resolved

What does this mean?

210 of 217 violations have been resolved. 95 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 122 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: 31 Population served: 15,489

Violations Detail (217 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 22, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 22, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 22, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 22, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 22, 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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Feb 3, 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	Nov 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 8, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 8, 2024	Resolved	N/A
Lead and Copper Rule	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
Lead and Copper Rule	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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	10.35	Sep 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	34.55	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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	7.88	Jun 30, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	7.88	Jun 30, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	7.88	Jun 30, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	7.88	Jun 30, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	21.09	Jun 30, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	21.09	Jun 30, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	21.09	Jun 30, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	21.09	Jun 30, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	31.63	Jun 30, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	31.63	Jun 30, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	9.95	Jun 30, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	9.95	Jun 30, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 31, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 31, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	19.92	Mar 31, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.93	Mar 31, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.93	Mar 31, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.93	Mar 31, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	19.92	Mar 31, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	19.92	Mar 31, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	19.92	Mar 31, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.93	Mar 31, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.68	Mar 31, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.68	Mar 31, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.68	Mar 31, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.68	Mar 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	32.2	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
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
Combined Radium (-226 and -228)	Health-Based	N/A	9.73	Mar 31, 2024	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	9.73	Mar 31, 2024	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	32.2	Mar 31, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 6, 2024	Active	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.38	Dec 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.38	Dec 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.38	Dec 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.38	Dec 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.48	Dec 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.48	Dec 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.48	Dec 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.48	Dec 31, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2023	Active	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2023	Active	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	7.38	Dec 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	7.38	Dec 31, 2023	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	21.81	Dec 31, 2023	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	21.81	Dec 31, 2023	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Dec 4, 2023	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Dec 4, 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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 28, 2023	Active	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 28, 2023	Active	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	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	Sep 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.63	Sep 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.63	Sep 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.63	Sep 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.63	Sep 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.63	Sep 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.13	Sep 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.13	Sep 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.13	Sep 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.13	Sep 30, 2023	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	15.72	Sep 30, 2023	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	15.72	Sep 30, 2023	Resolved	N/A
Gross Alpha, Excl. Radon and U	Health-Based	N/A	15.72	Sep 30, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Sep 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jul 12, 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
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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.78	Jun 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.78	Jun 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.78	Jun 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.78	Jun 30, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.78	Jun 30, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 4, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.63	Mar 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.63	Mar 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.63	Mar 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.63	Mar 31, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.63	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	7.23	Dec 31, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	7.23	Dec 31, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	7.23	Dec 31, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	7.23	Dec 31, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	7.23	Dec 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.78	Sep 30, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.78	Sep 30, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.78	Sep 30, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.78	Sep 30, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.78	Sep 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.7	Jun 30, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.7	Jun 30, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.7	Jun 30, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	5.7	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
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
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.65	Mar 31, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.65	Mar 31, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.65	Mar 31, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.65	Mar 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.83	Dec 31, 2021	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.83	Dec 31, 2021	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.83	Dec 31, 2021	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	6.83	Dec 31, 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
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
Combined Radium (-226 and -228)	Health-Based	N/A	8.5	Sep 30, 2021	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	8.5	Sep 30, 2021	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	8.5	Sep 30, 2021	Resolved	N/A
Combined Radium (-226 and -228)	Health-Based	N/A	8.5	Sep 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 26, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2025(15)

Revised Total Coliform Rule

Aug 31Resolved

Public Notice

Apr 22Resolved

Public Notice

Apr 22Resolved

Public Notice

Apr 22Resolved

Public Notice

Apr 22Resolved

Public Notice

Apr 22Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Groundwater Rule

Feb 3Resolved

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(75)

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Active

LEAD AND COPPER RULE REVISIONS

Oct 16Active

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

Public Notice

Oct 8Resolved

Public Notice

Oct 8Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Gross Alpha, Excl. Radon and U

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Gross Alpha, Excl. Radon and U

Jun 30Resolved

Gross Alpha, Excl. Radon and U

Jun 30Resolved

Gross Alpha, Excl. Radon and U

Jun 30Resolved

Gross Alpha, Excl. Radon and U

Jun 30Resolved

Gross Alpha, Excl. Radon and U

Jun 30Resolved

Gross Alpha, Excl. Radon and U

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Groundwater Rule

May 31Resolved

Groundwater Rule

May 31Resolved

Groundwater Rule

May 31Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Gross Alpha, Excl. Radon and U

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Gross Alpha, Excl. Radon and U

Mar 31Resolved

Gross Alpha, Excl. Radon and U

Mar 31Resolved

Gross Alpha, Excl. Radon and U

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Gross Alpha, Excl. Radon and U

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Gross Alpha, Excl. Radon and U

Mar 31Resolved

Public Notice

Feb 6Active

2023(61)

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Lead and Copper Rule

Dec 31Active

Lead and Copper Rule

Dec 31Active

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Gross Alpha, Excl. Radon and U

Dec 31Resolved

Gross Alpha, Excl. Radon and U

Dec 31Resolved

Groundwater Rule

Dec 4Resolved

Groundwater Rule

Dec 4Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Groundwater Rule

Nov 28Active

Groundwater Rule

Nov 28Active

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Gross Alpha, Excl. Radon and U

Sep 30Resolved

Gross Alpha, Excl. Radon and U

Sep 30Resolved

Gross Alpha, Excl. Radon and U

Sep 30Resolved

Public Notice

Sep 18Resolved

Public Notice

Jul 12Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Public Notice

Apr 4Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

2022(48)

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Combined Radium (-226 and -228)

Dec 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Combined Radium (-226 and -228)

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Combined Radium (-226 and -228)

Jun 30Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Combined Radium (-226 and -228)

Mar 31Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

How Does This Compare?

TROY (63379) has 217 recorded violations, including 95 health-based. 7 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 →

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 TROY, MO (63379)

What does this mean?

Violations Detail (217 total)

Lead & Copper Levels

Violation Timeline

2025(15)

2024(75)

2023(61)

2022(48)

2021(18)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

UV Water Purifier

Nearby ZIP Codes

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