Water Quality in ONAMIA, MN (56359)

EPA violation data for public water systems serving ZIP code 56359.

285

Total Violations

Health-Based

285

Monitoring / Reporting

285

Resolved

What does this mean?

285 of 285 violations have been resolved. None of these are health-based violations — no contaminant levels exceeded federal safety limits. The remaining 285 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: 82 Population served: 9,558

Violations Detail (285 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Public Notice	Monitoring	N/A	N/A	Jan 11, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 11, 2025	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
Trichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Liver problems; increased risk of cancer
Trichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Liver problems; increased risk of cancer
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Trichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Liver problems; increased risk of cancer
Vinyl chloride	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Increased risk of cancer
Vinyl chloride	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Increased risk of cancer
Vinyl chloride	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Increased risk of cancer
Carbon tetrachloride	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Liver problems; increased risk of cancer
Carbon tetrachloride	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Liver problems; increased risk of cancer
Carbon tetrachloride	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Liver problems; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Vinyl chloride	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Increased risk of cancer
Vinyl chloride	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Increased risk of cancer
Vinyl chloride	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Increased risk of cancer
Trichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Liver problems; increased risk of cancer
Trichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Liver problems; increased risk of cancer
Trichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Liver problems; increased risk of cancer
1,1-Dichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Benzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
p-Dichlorobenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Carbon tetrachloride	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Liver problems; increased risk of cancer
DICHLOROMETHANE	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Carbon tetrachloride	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Liver problems; increased risk of cancer
Carbon tetrachloride	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Liver problems; increased risk of cancer
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Carbon tetrachloride	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Liver problems; increased risk of cancer
Carbon tetrachloride	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Liver problems; increased risk of cancer
Carbon tetrachloride	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Liver problems; increased risk of cancer
Vinyl chloride	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Increased risk of cancer
Vinyl chloride	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Increased risk of cancer
Vinyl chloride	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Increased risk of cancer
Atrazine	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Cardiovascular system or reproductive problems
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Glyphosate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Glyphosate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Glyphosate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
2,3,7,8-TCDD	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
2,3,7,8-TCDD	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
2,3,7,8-TCDD	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Total Polychlorinated Biphenyls (PCB)	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Total Polychlorinated Biphenyls (PCB)	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Total Polychlorinated Biphenyls (PCB)	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Tetrachloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Liver problems; increased risk of cancer
Styrene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Trichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Liver problems; increased risk of cancer
Trichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Liver problems; increased risk of cancer
Trichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Liver problems; increased risk of cancer
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Benzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
1,2-Dichloroethane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2025(2)

Public Notice

Jan 11Resolved

Public Notice

Jan 11Resolved

2022(130)

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Trichloroethylene

Sep 30Resolved

Trichloroethylene

Sep 30Resolved

trans-1,2-Dichloroethylene

Sep 30Resolved

trans-1,2-Dichloroethylene

Sep 30Resolved

trans-1,2-Dichloroethylene

Sep 30Resolved

Trichloroethylene

Sep 30Resolved

Vinyl chloride

Sep 30Resolved

Vinyl chloride

Sep 30Resolved

Vinyl chloride

Sep 30Resolved

Carbon tetrachloride

Sep 30Resolved

Carbon tetrachloride

Sep 30Resolved

Carbon tetrachloride

Sep 30Resolved

Tetrachloroethylene

Sep 30Resolved

Tetrachloroethylene

Sep 30Resolved

Tetrachloroethylene

Sep 30Resolved

Benzene

Sep 30Resolved

Benzene

Sep 30Resolved

Benzene

Sep 30Resolved

cis-1,2-Dichloroethylene

Sep 30Resolved

Toluene

Sep 30Resolved

cis-1,2-Dichloroethylene

Sep 30Resolved

Xylenes, Total

Sep 30Resolved

Xylenes, Total

Sep 30Resolved

Xylenes, Total

Sep 30Resolved

o-Dichlorobenzene

Sep 30Resolved

o-Dichlorobenzene

Sep 30Resolved

o-Dichlorobenzene

Sep 30Resolved

cis-1,2-Dichloroethylene

Sep 30Resolved

p-Dichlorobenzene

Sep 30Resolved

p-Dichlorobenzene

Sep 30Resolved

Ethylbenzene

Sep 30Resolved

Ethylbenzene

Sep 30Resolved

Ethylbenzene

Sep 30Resolved

1,2-Dichloroethane

Sep 30Resolved

1,1,1-Trichloroethane

Sep 30Resolved

1,2-Dichloroethane

Sep 30Resolved

1,2-Dichloroethane

Sep 30Resolved

1,1,1-Trichloroethane

Sep 30Resolved

1,1,1-Trichloroethane

Sep 30Resolved

1,1,2-Trichloroethane

Sep 30Resolved

1,1,2-Trichloroethane

Sep 30Resolved

1,1,2-Trichloroethane

Sep 30Resolved

Toluene

Sep 30Resolved

Toluene

Sep 30Resolved

p-Dichlorobenzene

Sep 30Resolved

Styrene

Sep 30Resolved

1,2-Dichloropropane

Sep 30Resolved

DICHLOROMETHANE

Sep 30Resolved

Styrene

Sep 30Resolved

DICHLOROMETHANE

Sep 30Resolved

1,2,4-Trichlorobenzene

Sep 30Resolved

1,2,4-Trichlorobenzene

Sep 30Resolved

1,2,4-Trichlorobenzene

Sep 30Resolved

Styrene

Sep 30Resolved

CHLOROBENZENE

Sep 30Resolved

CHLOROBENZENE

Sep 30Resolved

DICHLOROMETHANE

Sep 30Resolved

1,1-Dichloroethylene

Sep 30Resolved

1,1-Dichloroethylene

Sep 30Resolved

1,1-Dichloroethylene

Sep 30Resolved

1,2-Dichloropropane

Sep 30Resolved

1,2-Dichloropropane

Sep 30Resolved

CHLOROBENZENE

Sep 30Resolved

1,1,1-Trichloroethane

Mar 31Resolved

Xylenes, Total

Mar 31Resolved

Xylenes, Total

Mar 31Resolved

Xylenes, Total

Mar 31Resolved

Ethylbenzene

Mar 31Resolved

Ethylbenzene

Mar 31Resolved

Ethylbenzene

Mar 31Resolved

cis-1,2-Dichloroethylene

Mar 31Resolved

cis-1,2-Dichloroethylene

Mar 31Resolved

cis-1,2-Dichloroethylene

Mar 31Resolved

1,1,1-Trichloroethane

Mar 31Resolved

1,1,1-Trichloroethane

Mar 31Resolved

Vinyl chloride

Mar 31Resolved

Vinyl chloride

Mar 31Resolved

Vinyl chloride

Mar 31Resolved

Trichloroethylene

Mar 31Resolved

Trichloroethylene

Mar 31Resolved

Trichloroethylene

Mar 31Resolved

Tetrachloroethylene

Mar 31Resolved

Tetrachloroethylene

Mar 31Resolved

Tetrachloroethylene

Mar 31Resolved

1,1-Dichloroethylene

Mar 31Resolved

1,1-Dichloroethylene

Mar 31Resolved

1,1-Dichloroethylene

Mar 31Resolved

trans-1,2-Dichloroethylene

Mar 31Resolved

trans-1,2-Dichloroethylene

Mar 31Resolved

trans-1,2-Dichloroethylene

Mar 31Resolved

1,2-Dichloroethane

Mar 31Resolved

1,2-Dichloroethane

Mar 31Resolved

1,2-Dichloroethane

Mar 31Resolved

1,2-Dichloropropane

Mar 31Resolved

1,2-Dichloropropane

Mar 31Resolved

1,2-Dichloropropane

Mar 31Resolved

1,1,2-Trichloroethane

Mar 31Resolved

1,1,2-Trichloroethane

Mar 31Resolved

1,1,2-Trichloroethane

Mar 31Resolved

Toluene

Mar 31Resolved

Toluene

Mar 31Resolved

Toluene

Mar 31Resolved

Benzene

Mar 31Resolved

Benzene

Mar 31Resolved

Benzene

Mar 31Resolved

p-Dichlorobenzene

Mar 31Resolved

p-Dichlorobenzene

Mar 31Resolved

p-Dichlorobenzene

Mar 31Resolved

Styrene

Mar 31Resolved

Styrene

Mar 31Resolved

Styrene

Mar 31Resolved

CHLOROBENZENE

Mar 31Resolved

CHLOROBENZENE

Mar 31Resolved

CHLOROBENZENE

Mar 31Resolved

1,2,4-Trichlorobenzene

Mar 31Resolved

1,2,4-Trichlorobenzene

Mar 31Resolved

o-Dichlorobenzene

Mar 31Resolved

o-Dichlorobenzene

Mar 31Resolved

o-Dichlorobenzene

Mar 31Resolved

Carbon tetrachloride

Mar 31Resolved

DICHLOROMETHANE

Mar 31Resolved

DICHLOROMETHANE

Mar 31Resolved

DICHLOROMETHANE

Mar 31Resolved

Carbon tetrachloride

Mar 31Resolved

Carbon tetrachloride

Mar 31Resolved

1,2,4-Trichlorobenzene

Mar 31Resolved

2021(153)

1,2-DIBROMO-3-CHLOROPROPANE

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Dec 31Resolved

Dalapon

Dec 31Resolved

Dalapon

Dec 31Resolved

Dalapon

Dec 31Resolved

Simazine

Dec 31Resolved

Simazine

Dec 31Resolved

Simazine

Dec 31Resolved

Carbon tetrachloride

Dec 31Resolved

Carbon tetrachloride

Dec 31Resolved

Carbon tetrachloride

Dec 31Resolved

Vinyl chloride

Dec 31Resolved

Vinyl chloride

Dec 31Resolved

Vinyl chloride

Dec 31Resolved

Atrazine

Dec 31Resolved

Atrazine

Dec 31Resolved

Atrazine

Dec 31Resolved

trans-1,2-Dichloroethylene

Dec 31Resolved

trans-1,2-Dichloroethylene

Dec 31Resolved

trans-1,2-Dichloroethylene

Dec 31Resolved

1,1,1-Trichloroethane

Dec 31Resolved

1,1,1-Trichloroethane

Dec 31Resolved

1,1,1-Trichloroethane

Dec 31Resolved

1,2-Dichloropropane

Dec 31Resolved

1,2-Dichloropropane

Dec 31Resolved

1,2-Dichloropropane

Dec 31Resolved

CHLOROBENZENE

Dec 31Resolved

CHLOROBENZENE

Dec 31Resolved

CHLOROBENZENE

Dec 31Resolved

1,2,4-Trichlorobenzene

Dec 31Resolved

Toluene

Dec 31Resolved

1,2,4-Trichlorobenzene

Dec 31Resolved

1,2,4-Trichlorobenzene

Dec 31Resolved

Toluene

Dec 31Resolved

Toluene

Dec 31Resolved

Ethylbenzene

Dec 31Resolved

Ethylbenzene

Dec 31Resolved

Ethylbenzene

Dec 31Resolved

Xylenes, Total

Dec 31Resolved

DICHLOROMETHANE

Dec 31Resolved

Xylenes, Total

Dec 31Resolved

Xylenes, Total

Dec 31Resolved

cis-1,2-Dichloroethylene

Dec 31Resolved

cis-1,2-Dichloroethylene

Dec 31Resolved

DICHLOROMETHANE

Dec 31Resolved

DICHLOROMETHANE

Dec 31Resolved

cis-1,2-Dichloroethylene

Dec 31Resolved

BHC-GAMMA

Dec 31Resolved

BHC-GAMMA

Dec 31Resolved

BHC-GAMMA

Dec 31Resolved

Toxaphene

Dec 31Resolved

Toxaphene

Dec 31Resolved

Toxaphene

Dec 31Resolved

Diquat

Dec 31Resolved

Diquat

Dec 31Resolved

Diquat

Dec 31Resolved

Endothall

Dec 31Resolved

Endothall

Dec 31Resolved

Endothall

Dec 31Resolved

Glyphosate

Dec 31Resolved

Glyphosate

Dec 31Resolved

Glyphosate

Dec 31Resolved

Di(2-ethylhexyl) adipate

Dec 31Resolved

Di(2-ethylhexyl) adipate

Dec 31Resolved

Di(2-ethylhexyl) adipate

Dec 31Resolved

Di(2-ethylhexyl) phthalate

Dec 31Resolved

Di(2-ethylhexyl) phthalate

Dec 31Resolved

Di(2-ethylhexyl) phthalate

Dec 31Resolved

Picloram

Dec 31Resolved

Picloram

Dec 31Resolved

Picloram

Dec 31Resolved

Dinoseb

Dec 31Resolved

Dinoseb

Dec 31Resolved

Dinoseb

Dec 31Resolved

Hexachlorocyclopentadiene

Dec 31Resolved

Hexachlorocyclopentadiene

Dec 31Resolved

Hexachlorocyclopentadiene

Dec 31Resolved

Carbofuran

Dec 31Resolved

Carbofuran

Dec 31Resolved

Carbofuran

Dec 31Resolved

2,3,7,8-TCDD

Dec 31Resolved

Heptachlor

Dec 31Resolved

2,3,7,8-TCDD

Dec 31Resolved

2,3,7,8-TCDD

Dec 31Resolved

Heptachlor

Dec 31Resolved

Heptachlor

Dec 31Resolved

Heptachlor epoxide

Dec 31Resolved

Heptachlor epoxide

Dec 31Resolved

Heptachlor epoxide

Dec 31Resolved

2,4-D

Dec 31Resolved

2,4-D

Dec 31Resolved

2,4-D

Dec 31Resolved

Benzo(a)pyrene

Dec 31Resolved

Benzo(a)pyrene

Dec 31Resolved

Benzo(a)pyrene

Dec 31Resolved

1,1-Dichloroethylene

Dec 31Resolved

1,1-Dichloroethylene

Dec 31Resolved

1,1-Dichloroethylene

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

Dec 31Resolved

ETHYLENE DIBROMIDE

Dec 31Resolved

ETHYLENE DIBROMIDE

Dec 31Resolved

ETHYLENE DIBROMIDE

Dec 31Resolved

Chlordane

Dec 31Resolved

Chlordane

Dec 31Resolved

Chlordane

Dec 31Resolved

Methoxychlor

Dec 31Resolved

Methoxychlor

Dec 31Resolved

Methoxychlor

Dec 31Resolved

p-Dichlorobenzene

Dec 31Resolved

p-Dichlorobenzene

Dec 31Resolved

p-Dichlorobenzene

Dec 31Resolved

LASSO

Dec 31Resolved

Endrin

Dec 31Resolved

LASSO

Dec 31Resolved

Tetrachloroethylene

Dec 31Resolved

Tetrachloroethylene

Dec 31Resolved

Tetrachloroethylene

Dec 31Resolved

Styrene

Dec 31Resolved

Styrene

Dec 31Resolved

Styrene

Dec 31Resolved

2,4,5-TP

Dec 31Resolved

2,4,5-TP

Dec 31Resolved

2,4,5-TP

Dec 31Resolved

HEXACHLOROBENZENE

Dec 31Resolved

HEXACHLOROBENZENE

Dec 31Resolved

HEXACHLOROBENZENE

Dec 31Resolved

Trichloroethylene

Dec 31Resolved

Trichloroethylene

Dec 31Resolved

Trichloroethylene

Dec 31Resolved

1,1,2-Trichloroethane

Dec 31Resolved

Benzene

Dec 31Resolved

Benzene

Dec 31Resolved

Benzene

Dec 31Resolved

1,2-Dichloroethane

Dec 31Resolved

1,2-Dichloroethane

Dec 31Resolved

OXAMYL

Dec 31Resolved

OXAMYL

Dec 31Resolved

OXAMYL

Dec 31Resolved

1,2-Dichloroethane

Dec 31Resolved

1,1,2-Trichloroethane

Dec 31Resolved

1,1,2-Trichloroethane

Dec 31Resolved

o-Dichlorobenzene

Dec 31Resolved

o-Dichlorobenzene

Dec 31Resolved

o-Dichlorobenzene

Dec 31Resolved

Endrin

Dec 31Resolved

Endrin

Dec 31Resolved

LASSO

Dec 31Resolved

How Does This Compare?

ONAMIA (56359) has 285 recorded violations, none of which are 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 →

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

Water Quality in ONAMIA, MN (56359)

What does this mean?

Violations Detail (285 total)

Lead & Copper Levels

Violation Timeline

2025(2)

2022(130)

2021(153)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

Nearby ZIP Codes

Check Another ZIP Code