Water Quality in GLASGOW, MT (59230)

EPA violation data for public water systems serving ZIP code 59230.

192

Total Violations

Health-Based

192

Monitoring / Reporting

189

Resolved

What does this mean?

189 of 192 violations have been resolved. None of these are health-based violations — no 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: 19 Population served: 8,797

Violations Detail (192 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 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
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 29, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 29, 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
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
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	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
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	Resolved	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	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
Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2024	Resolved	N/A
Surface Water Treatment 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
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
Revised Total Coliform 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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2024	Resolved	N/A
Surface Water Treatment 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
Surface Water Treatment 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
Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	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
Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Mar 31, 2024	Resolved	N/A
Surface Water Treatment 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
Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 29, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 29, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Feb 29, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jan 31, 2024	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Revised Total Coliform Rule	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
Surface Water Treatment Rule	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Surface Water Treatment 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
Surface Water Treatment Rule	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Surface Water Treatment 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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 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
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
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Lead and Copper 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
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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Jun 25, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Jun 25, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Jun 25, 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	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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Bromate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Increased risk of cancer
Bromate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Increased risk of cancer
Bromate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Increased risk of cancer
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
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
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
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
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 30, 2022	Active	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 30, 2022	Active	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 30, 2022	Active	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
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
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
Consumer Confidence Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Consumer Confidence 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
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Bromate	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Increased risk of cancer
Bromate	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Increased risk of cancer
Bromate	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Increased risk of cancer
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 29, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 29, 2021	Resolved	N/A
E. COLI	Monitoring	0	N/A	Oct 25, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Oct 25, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Oct 25, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 4, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 4, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 4, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 4, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
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
Bromate	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	Increased risk of cancer
Bromate	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	Increased risk of cancer
Bromate	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	Increased risk of cancer

Lead & Copper Levels

Violation Timeline

2025(9)

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Jul 31Resolved

Revised Total Coliform Rule

Jul 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

2024(67)

Lead and Copper Rule

Dec 29Resolved

Lead and Copper Rule

Dec 29Resolved

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

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

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Consumer Confidence Rule

Sep 30Resolved

Consumer Confidence Rule

Sep 30Resolved

Consumer Confidence Rule

Sep 30Resolved

Consumer Confidence Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

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

Revised Total Coliform Rule

Aug 31Resolved

Surface Water Treatment Rule

Jul 31Resolved

Surface Water Treatment Rule

Jul 31Resolved

Surface Water Treatment Rule

Jul 31Resolved

Revised Total Coliform Rule

Jul 31Resolved

Revised Total Coliform Rule

Jul 31Resolved

Revised Total Coliform Rule

Jul 31Resolved

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

Consumer Confidence Rule

Jun 30Resolved

Surface Water Treatment Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Consumer Confidence Rule

Jun 30Resolved

Revised Total Coliform Rule

May 31Resolved

Surface Water Treatment 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

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Surface Water Treatment Rule

Mar 31Resolved

Surface Water Treatment Rule

Mar 31Resolved

Surface Water Treatment Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Surface Water Treatment Rule

Feb 29Resolved

Surface Water Treatment Rule

Feb 29Resolved

Surface Water Treatment Rule

Feb 29Resolved

Surface Water Treatment Rule

Jan 31Resolved

Surface Water Treatment Rule

Jan 31Resolved

Surface Water Treatment Rule

Jan 31Resolved

Surface Water Treatment Rule

Jan 31Resolved

Surface Water Treatment Rule

Jan 31Resolved

2023(67)

TTHM

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

TTHM

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Surface Water Treatment Rule

Dec 31Resolved

TTHM

Dec 31Resolved

Surface Water Treatment Rule

Dec 31Resolved

Surface Water Treatment Rule

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Surface Water Treatment Rule

Dec 31Resolved

Surface Water Treatment Rule

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Surface Water Treatment Rule

Nov 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform 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

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

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Surface Water Treatment Rule

Aug 31Resolved

Surface Water Treatment 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

Revised Total Coliform Rule

Aug 31Resolved

Surface Water Treatment Rule

Jul 31Resolved

Surface Water Treatment Rule

Jul 31Resolved

Surface Water Treatment Rule

Jul 31Resolved

Surface Water Treatment Rule

Jul 31Resolved

Surface Water Treatment Rule

Jul 31Resolved

Surface Water Treatment 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

Jun 30Resolved

Nitrate-Nitrite

Jun 25Resolved

Nitrate-Nitrite

Jun 25Resolved

Nitrate-Nitrite

Jun 25Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Bromate

Mar 31Resolved

Bromate

Mar 31Resolved

Bromate

Mar 31Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

How Does This Compare?

GLASGOW (59230) has 192 recorded violations, none of which are health-based. 3 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 GLASGOW, MT (59230)

What does this mean?

Violations Detail (192 total)

Lead & Copper Levels

Violation Timeline

2025(9)

2024(67)

2023(67)

2022(34)

2021(15)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

Activated Carbon Filter

UV Water Purifier

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