Water Quality in DELPHI, IN (46923)

EPA violation data for public water systems serving ZIP code 46923.

257

Total Violations

Health-Based

238

Monitoring / Reporting

257

Resolved

What does this mean?

257 of 257 violations have been resolved. 19 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 238 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: 33 Population served: 6,216

Violations Detail (257 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
Groundwater Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Jun 30, 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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Jan 9, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Jan 9, 2025	Resolved	N/A
Groundwater Rule	Monitoring	N/A	N/A	Jan 9, 2025	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	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	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 10, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 10, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 10, 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
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
Nitrate	Health-Based	N/A	12.7	Dec 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
CHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Trichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
Trichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
Trichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
Vinyl chloride	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Increased risk of cancer
Vinyl chloride	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Increased risk of cancer
Vinyl chloride	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Increased risk of cancer
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
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
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate	Health-Based	N/A	12.7	Dec 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Carbon tetrachloride	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
Carbon tetrachloride	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
Carbon tetrachloride	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Benzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Tetrachloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Liver problems; increased risk of cancer
Nitrate	Health-Based	N/A	12.7	Dec 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	12.7	Dec 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	12.7	Dec 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
p-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Ethylbenzene	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	Aug 8, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 8, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 8, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 10, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 10, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 10, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 8, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 8, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 8, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Atrazine	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Cardiovascular system or reproductive problems
Endrin	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Feb 28, 2023	Resolved	N/A
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Revised Total Coliform Rule	Monitoring	N/A	N/A	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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
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	May 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 8, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 8, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 8, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 8, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 8, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 8, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 8, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 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
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	Aug 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2025(11)

Revised Total Coliform Rule

Aug 31Resolved

Groundwater Rule

Jun 30Resolved

Groundwater Rule

Jun 30Resolved

Groundwater Rule

Jun 30Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Groundwater Rule

Jan 9Resolved

Groundwater Rule

Jan 9Resolved

Groundwater Rule

Jan 9Resolved

2024(20)

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Aug 31Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 10Resolved

Revised Total Coliform Rule

Apr 10Resolved

Revised Total Coliform Rule

Apr 10Resolved

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

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

2023(173)

Nitrate

Dec 31Resolved

CHLOROBENZENE

Dec 31Resolved

Ethylbenzene

Dec 31Resolved

Ethylbenzene

Dec 31Resolved

Trichloroethylene

Dec 31Resolved

Trichloroethylene

Dec 31Resolved

Trichloroethylene

Dec 31Resolved

Vinyl chloride

Dec 31Resolved

Vinyl chloride

Dec 31Resolved

Vinyl chloride

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

trans-1,2-Dichloroethylene

Dec 31Resolved

trans-1,2-Dichloroethylene

Dec 31Resolved

trans-1,2-Dichloroethylene

Dec 31Resolved

1,2-Dichloropropane

Dec 31Resolved

1,2-Dichloropropane

Dec 31Resolved

1,2-Dichloropropane

Dec 31Resolved

1,1,2-Trichloroethane

Dec 31Resolved

1,1,2-Trichloroethane

Dec 31Resolved

1,1,2-Trichloroethane

Dec 31Resolved

Styrene

Dec 31Resolved

Styrene

Dec 31Resolved

Styrene

Dec 31Resolved

Nitrate

Dec 31Resolved

Carbon tetrachloride

Dec 31Resolved

Carbon tetrachloride

Dec 31Resolved

Carbon tetrachloride

Dec 31Resolved

1,1,1-Trichloroethane

Dec 31Resolved

1,1,1-Trichloroethane

Dec 31Resolved

1,1,1-Trichloroethane

Dec 31Resolved

cis-1,2-Dichloroethylene

Dec 31Resolved

cis-1,2-Dichloroethylene

Dec 31Resolved

cis-1,2-Dichloroethylene

Dec 31Resolved

Xylenes, Total

Dec 31Resolved

Xylenes, Total

Dec 31Resolved

Xylenes, Total

Dec 31Resolved

o-Dichlorobenzene

Dec 31Resolved

o-Dichlorobenzene

Dec 31Resolved

o-Dichlorobenzene

Dec 31Resolved

DICHLOROMETHANE

Dec 31Resolved

DICHLOROMETHANE

Dec 31Resolved

DICHLOROMETHANE

Dec 31Resolved

1,1-Dichloroethylene

Dec 31Resolved

1,1-Dichloroethylene

Dec 31Resolved

1,1-Dichloroethylene

Dec 31Resolved

Benzene

Dec 31Resolved

Benzene

Dec 31Resolved

Benzene

Dec 31Resolved

1,2,4-Trichlorobenzene

Dec 31Resolved

1,2,4-Trichlorobenzene

Dec 31Resolved

1,2,4-Trichlorobenzene

Dec 31Resolved

Tetrachloroethylene

Dec 31Resolved

Tetrachloroethylene

Dec 31Resolved

Tetrachloroethylene

Dec 31Resolved

Nitrate

Dec 31Resolved

Nitrate

Dec 31Resolved

Nitrate

Dec 31Resolved

p-Dichlorobenzene

Dec 31Resolved

p-Dichlorobenzene

Dec 31Resolved

p-Dichlorobenzene

Dec 31Resolved

Toluene

Dec 31Resolved

Toluene

Dec 31Resolved

Toluene

Dec 31Resolved

1,2-Dichloroethane

Dec 31Resolved

1,2-Dichloroethane

Dec 31Resolved

1,2-Dichloroethane

Dec 31Resolved

CHLOROBENZENE

Dec 31Resolved

CHLOROBENZENE

Dec 31Resolved

Ethylbenzene

Dec 31Resolved

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 8Resolved

Revised Total Coliform Rule

Aug 8Resolved

Revised Total Coliform Rule

Aug 8Resolved

Revised Total Coliform Rule

Jul 10Resolved

Revised Total Coliform Rule

Jul 10Resolved

Revised Total Coliform Rule

Jul 10Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Methoxychlor

Mar 31Resolved

HEXACHLOROBENZENE

Mar 31Resolved

Methoxychlor

Mar 31Resolved

Pentachlorophenol

Mar 31Resolved

Pentachlorophenol

Mar 31Resolved

Pentachlorophenol

Mar 31Resolved

OXAMYL

Mar 31Resolved

OXAMYL

Mar 31Resolved

OXAMYL

Mar 31Resolved

2,4,5-TP

Mar 31Resolved

2,4,5-TP

Mar 31Resolved

2,4,5-TP

Mar 31Resolved

ETHYLENE DIBROMIDE

Mar 31Resolved

ETHYLENE DIBROMIDE

Mar 31Resolved

ETHYLENE DIBROMIDE

Mar 31Resolved

Atrazine

Mar 31Resolved

Atrazine

Mar 31Resolved

Atrazine

Mar 31Resolved

Endrin

Mar 31Resolved

Endrin

Mar 31Resolved

Endrin

Mar 31Resolved

Methoxychlor

Mar 31Resolved

BHC-GAMMA

Mar 31Resolved

BHC-GAMMA

Mar 31Resolved

Toxaphene

Mar 31Resolved

Toxaphene

Mar 31Resolved

Toxaphene

Mar 31Resolved

Diquat

Mar 31Resolved

Diquat

Mar 31Resolved

Diquat

Mar 31Resolved

Endothall

Mar 31Resolved

Endothall

Mar 31Resolved

Endothall

Mar 31Resolved

Di(2-ethylhexyl) adipate

Mar 31Resolved

Di(2-ethylhexyl) adipate

Mar 31Resolved

Di(2-ethylhexyl) adipate

Mar 31Resolved

Simazine

Mar 31Resolved

Simazine

Mar 31Resolved

Simazine

Mar 31Resolved

Picloram

Mar 31Resolved

Picloram

Mar 31Resolved

Picloram

Mar 31Resolved

Hexachlorocyclopentadiene

Mar 31Resolved

Hexachlorocyclopentadiene

Mar 31Resolved

Hexachlorocyclopentadiene

Mar 31Resolved

Carbofuran

Mar 31Resolved

Carbofuran

Mar 31Resolved

Carbofuran

Mar 31Resolved

LASSO

Mar 31Resolved

LASSO

Mar 31Resolved

LASSO

Mar 31Resolved

Heptachlor

Mar 31Resolved

Heptachlor

Mar 31Resolved

Heptachlor

Mar 31Resolved

Heptachlor epoxide

Mar 31Resolved

Heptachlor epoxide

Mar 31Resolved

Heptachlor epoxide

Mar 31Resolved

2,4-D

Mar 31Resolved

2,4-D

Mar 31Resolved

2,4-D

Mar 31Resolved

HEXACHLOROBENZENE

Mar 31Resolved

Chlordane

Mar 31Resolved

HEXACHLOROBENZENE

Mar 31Resolved

Benzo(a)pyrene

Mar 31Resolved

Benzo(a)pyrene

Mar 31Resolved

Benzo(a)pyrene

Mar 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Mar 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Mar 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Mar 31Resolved

Di(2-ethylhexyl) phthalate

Mar 31Resolved

Di(2-ethylhexyl) phthalate

Mar 31Resolved

Di(2-ethylhexyl) phthalate

Mar 31Resolved

Dinoseb

Mar 31Resolved

Dinoseb

Mar 31Resolved

Dinoseb

Mar 31Resolved

Dalapon

Mar 31Resolved

Dalapon

Mar 31Resolved

Dalapon

Mar 31Resolved

Chlordane

Mar 31Resolved

Chlordane

Mar 31Resolved

BHC-GAMMA

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

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?

DELPHI (46923) has 257 recorded violations, including 19 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

One of the few filtration methods effective at removing nitrates and nitrites. Essential for households with infants.

Targets:Nitrate, Nitrite, Dissolved Solids

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 DELPHI, IN (46923)

What does this mean?

Violations Detail (257 total)

Lead & Copper Levels

Violation Timeline

2025(11)

2024(20)

2023(173)

2022(50)

2021(3)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

UV Water Purifier

Nearby ZIP Codes

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