Water Quality in MANSFIELD, CT (06268)

EPA violation data for public water systems serving ZIP code 06268.

164

Total Violations

Health-Based

131

Monitoring / Reporting

150

Resolved

What does this mean?

150 of 164 violations have been resolved. 33 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 131 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: 84 Population served: 4,314

Violations Detail (164 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Public Notice	Monitoring	N/A	N/A	Mar 3, 2025	Active	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 29, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
Public Notice	Monitoring	N/A	N/A	Jul 14, 2024	Resolved	N/A
Arsenic	Health-Based	N/A	0.034	Mar 31, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Public Notice	Monitoring	N/A	N/A	Mar 31, 2024	Resolved	N/A
Arsenic	Health-Based	N/A	0.034	Mar 31, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.034	Mar 31, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.034	Mar 31, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
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
Arsenic	Health-Based	N/A	0.035	Dec 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.035	Dec 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.035	Dec 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Public Notice	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Arsenic	Health-Based	N/A	0.035	Dec 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.035	Sep 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.035	Sep 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.035	Sep 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.035	Sep 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
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
Arsenic	Health-Based	N/A	0.063	Jun 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.063	Jun 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.063	Jun 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.063	Jun 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.037	Mar 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.037	Mar 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.037	Mar 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.037	Mar 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.036	Dec 31, 2022	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.036	Dec 31, 2022	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.036	Dec 31, 2022	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.036	Dec 31, 2022	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.038	Sep 30, 2022	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.038	Sep 30, 2022	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.038	Sep 30, 2022	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.038	Sep 30, 2022	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 28, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Aug 9, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Aug 9, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Aug 9, 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
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2022	Active	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
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2022	Active	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2022	Active	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2022	Resolved	N/A
p-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
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
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
1,1,1-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
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
1,1,2-Trichloroethane	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
Trichloroethylene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Liver problems; increased risk of cancer
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
DICHLOROMETHANE	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
Ethylbenzene	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
Benzene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
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
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
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
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
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
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
CHLOROBENZENE	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
Toluene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Toluene	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
Styrene	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Styrene	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
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
Vinyl chloride	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Increased risk of cancer
o-Dichlorobenzene	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
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
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
Tetrachloroethylene	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
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
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
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
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
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 28, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 28, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Sep 23, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Sep 23, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 2, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 2, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2025(1)

Public Notice

Mar 3Active