Water Quality in BONNER, MT (59823)

EPA violation data for public water systems serving ZIP code 59823.

205

Total Violations

Health-Based

153

Monitoring / Reporting

205

Resolved

What does this mean?

205 of 205 violations have been resolved. 52 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 153 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: 20 Population served: 2,544

Violations Detail (205 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 3, 2025	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 3, 2025	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 3, 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
Groundwater Rule	Monitoring	N/A	N/A	Aug 31, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Aug 31, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Aug 31, 2025	Resolved	N/A
E. COLI	Monitoring	0	N/A	Aug 12, 2025	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 12, 2025	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 12, 2025	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Groundwater Rule	Monitoring	N/A	N/A	Jul 31, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Jul 31, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Jul 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Mar 31, 2025	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Mar 31, 2025	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Mar 31, 2025	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Feb 28, 2025	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Feb 28, 2025	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Feb 28, 2025	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Jan 31, 2025	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Jan 31, 2025	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Jan 31, 2025	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Dec 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Dec 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Dec 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Nov 30, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Nov 30, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Nov 30, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 31, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 31, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 31, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Oct 31, 2024	Resolved	N/A
Groundwater Rule	Health-Based	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
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Oct 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Oct 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Oct 31, 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
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Sep 30, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Sep 30, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Sep 30, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Aug 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Aug 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Aug 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Jul 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Jul 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	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
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Jun 30, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Jun 30, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	Jun 30, 2024	Resolved	N/A
Surface Water Treatment Rule	Monitoring	N/A	N/A	May 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Health-Based	N/A	N/A	May 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Health-Based	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
Surface Water Treatment Rule	Health-Based	N/A	N/A	May 31, 2024	Resolved	N/A
Surface Water Treatment Rule	Health-Based	N/A	N/A	May 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	May 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	May 31, 2024	Resolved	N/A
Long Term 2 Enhanced Surface Water Treatment Rule	Health-Based	N/A	N/A	May 31, 2024	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Jan 31, 2024	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Jan 31, 2024	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Jan 31, 2024	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
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	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
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	Jul 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 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
Groundwater Rule	Health-Based	N/A	N/A	Dec 31, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Dec 31, 2022	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Dec 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 30, 2022	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Atrazine	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	Cardiovascular system or reproductive problems
BHC-GAMMA	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
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
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2025(29)

Revised Total Coliform Rule

Oct 3Resolved

Revised Total Coliform Rule

Oct 3Resolved

Revised Total Coliform Rule

Oct 3Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Groundwater Rule

Aug 31Resolved

Groundwater Rule

Aug 31Resolved

Groundwater Rule

Aug 31Resolved

E. COLI

Aug 12Resolved

E. COLI

Aug 12Resolved

E. COLI

Aug 12Resolved

Groundwater Rule

Jul 31Resolved

Groundwater Rule

Jul 31Resolved

Groundwater Rule

Jul 31Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Mar 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Mar 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Mar 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Feb 28Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Feb 28Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Feb 28Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Jan 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Jan 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Jan 31Resolved

2024(49)

Long Term 2 Enhanced Surface Water Treatment Rule

Dec 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Dec 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Dec 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Nov 30Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Nov 30Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Nov 30Resolved

Groundwater Rule

Oct 31Resolved

Groundwater Rule

Oct 31Resolved

Groundwater Rule

Oct 31Resolved

Groundwater Rule

Oct 31Resolved

Groundwater Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Oct 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Oct 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Oct 31Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Sep 30Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Sep 30Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Sep 30Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Aug 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Aug 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Aug 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Jul 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Jul 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Jul 31Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Jun 30Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Jun 30Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

Jun 30Resolved

Surface Water Treatment Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Surface Water Treatment Rule

May 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

May 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

May 31Resolved

Long Term 2 Enhanced Surface Water Treatment Rule

May 31Resolved

Groundwater Rule

Jan 31Resolved

Groundwater Rule

Jan 31Resolved

Groundwater Rule

Jan 31Resolved

2022(99)

Groundwater Rule

Dec 31Resolved

Groundwater Rule

Dec 31Resolved

Groundwater Rule

Dec 31Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Dinoseb

Jun 30Resolved

Di(2-ethylhexyl) adipate

Jun 30Resolved

Dinoseb

Jun 30Resolved

Dinoseb

Jun 30Resolved

OXAMYL

Jun 30Resolved

OXAMYL

Jun 30Resolved

OXAMYL

Jun 30Resolved

OXAMYL

Jun 30Resolved

Atrazine

Jun 30Resolved

Atrazine

Jun 30Resolved

Atrazine

Jun 30Resolved

Atrazine

Jun 30Resolved

BHC-GAMMA

Jun 30Resolved

BHC-GAMMA

Jun 30Resolved

BHC-GAMMA

Jun 30Resolved

BHC-GAMMA

Jun 30Resolved

Methoxychlor

Jun 30Resolved

Methoxychlor

Jun 30Resolved

Methoxychlor

Jun 30Resolved

Methoxychlor

Jun 30Resolved

Toxaphene

Jun 30Resolved

Toxaphene

Jun 30Resolved

Toxaphene

Jun 30Resolved

Dinoseb

Jun 30Resolved

Dalapon

Jun 30Resolved

Dalapon

Jun 30Resolved

Dalapon

Jun 30Resolved

Dalapon

Jun 30Resolved

Simazine

Jun 30Resolved

Simazine

Jun 30Resolved

Simazine

Jun 30Resolved

Simazine

Jun 30Resolved

Di(2-ethylhexyl) phthalate

Jun 30Resolved

Di(2-ethylhexyl) phthalate

Jun 30Resolved

Di(2-ethylhexyl) phthalate

Jun 30Resolved

Di(2-ethylhexyl) phthalate

Jun 30Resolved

Picloram

Jun 30Resolved

Picloram

Jun 30Resolved

Picloram

Jun 30Resolved

Picloram

Jun 30Resolved

LASSO

Jun 30Resolved

LASSO

Jun 30Resolved

LASSO

Jun 30Resolved

LASSO

Jun 30Resolved

Heptachlor epoxide

Jun 30Resolved

Heptachlor epoxide

Jun 30Resolved

Heptachlor epoxide

Jun 30Resolved

Heptachlor epoxide

Jun 30Resolved

2,4-D

Jun 30Resolved

2,4-D

Jun 30Resolved

2,4-D

Jun 30Resolved

2,4-D

Jun 30Resolved

Benzo(a)pyrene

Jun 30Resolved

Benzo(a)pyrene

Jun 30Resolved

Benzo(a)pyrene

Jun 30Resolved

Benzo(a)pyrene

Jun 30Resolved

Chlordane

Jun 30Resolved

Chlordane

Jun 30Resolved

Chlordane

Jun 30Resolved

Chlordane

Jun 30Resolved

Carbofuran

Jun 30Resolved

Carbofuran

Jun 30Resolved

Carbofuran

Jun 30Resolved

Carbofuran

Jun 30Resolved

Pentachlorophenol

Jun 30Resolved

Pentachlorophenol

Jun 30Resolved

Pentachlorophenol

Jun 30Resolved

Pentachlorophenol

Jun 30Resolved

Di(2-ethylhexyl) adipate

Jun 30Resolved

Di(2-ethylhexyl) adipate

Jun 30Resolved

Endrin

Jun 30Resolved

Di(2-ethylhexyl) adipate

Jun 30Resolved

HEXACHLOROBENZENE

Jun 30Resolved

HEXACHLOROBENZENE

Jun 30Resolved

HEXACHLOROBENZENE

Jun 30Resolved

HEXACHLOROBENZENE

Jun 30Resolved

2,4,5-TP

Jun 30Resolved

2,4,5-TP

Jun 30Resolved

2,4,5-TP

Jun 30Resolved

2,4,5-TP

Jun 30Resolved

Hexachlorocyclopentadiene

Jun 30Resolved

Hexachlorocyclopentadiene

Jun 30Resolved

Hexachlorocyclopentadiene

Jun 30Resolved

Hexachlorocyclopentadiene

Jun 30Resolved

Heptachlor

Jun 30Resolved

Heptachlor

Jun 30Resolved

Heptachlor

Jun 30Resolved

Heptachlor

Jun 30Resolved

Endrin

Jun 30Resolved

Endrin

Jun 30Resolved

Endrin

Jun 30Resolved

Toxaphene

Jun 30Resolved

How Does This Compare?

BONNER (59823) has 205 recorded violations, including 52 health-based. All violations have been resolved, which is a positive sign for current water quality. 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 BONNER, MT (59823)

What does this mean?

Violations Detail (205 total)

Lead & Copper Levels

Violation Timeline

2025(29)

2024(49)

2023(21)

2022(99)

2021(7)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

Activated Carbon Filter

UV Water Purifier

Nearby ZIP Codes

Check Another ZIP Code