Water Quality in DOWNINGTOWN, PA (19335)

EPA violation data for public water systems serving ZIP code 19335.

220

Total Violations

Health-Based

180

Monitoring / Reporting

212

Resolved

What does this mean?

212 of 220 violations have been resolved. 40 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 180 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: 42 Population served: 22,118

Violations Detail (220 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2025	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Aug 31, 2025	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Jun 30, 2025	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2025	Active	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2025	Active	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
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 10, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 10, 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
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
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
Public Notice	Monitoring	N/A	N/A	Jan 10, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 10, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 10, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 10, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 10, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 10, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 10, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 10, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 10, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 10, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 10, 2025	Resolved	N/A
Chlorine	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	Eye and nose irritation; stomach discomfort
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	Active	N/A
Chlorine	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	Eye and nose irritation; stomach discomfort
Public Notice	Monitoring	N/A	N/A	Jul 30, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jul 30, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jul 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
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	Health-Based	N/A	N/A	Jun 18, 2024	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 18, 2024	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 18, 2024	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 18, 2024	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 10, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 10, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 10, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 10, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2023	Active	N/A
Groundwater Rule	Health-Based	N/A	N/A	Jul 1, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Jul 1, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Jul 1, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Jul 1, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Jul 1, 2023	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Dalapon	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
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
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 18, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	May 12, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	May 12, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	May 12, 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
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
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
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
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	Monitoring	N/A	N/A	May 8, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	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
Revised Total Coliform Rule	Health-Based	N/A	N/A	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Mar 31, 2023	Resolved	N/A
Nitrite	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrite	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrite	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrite	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Lead and Copper Rule	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,1,1-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,2-Dichloroethane	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Tetrachloroethylene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Liver problems; increased risk of cancer
Tetrachloroethylene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Liver problems; increased risk of cancer
CHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
CHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Carbon tetrachloride	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Liver problems; increased risk of cancer
Carbon tetrachloride	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Liver problems; increased risk of cancer
Trichloroethylene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Liver problems; increased risk of cancer
Trichloroethylene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Liver problems; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
Benzene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Anemia; decrease in blood platelets; increased risk of cancer
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,2,4-Trichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
cis-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Xylenes, Total	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
DICHLOROMETHANE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
o-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,1-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
trans-1,2-Dichloroethylene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Ethylbenzene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Toluene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Styrene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,1,2-Trichloroethane	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,2-Dichloropropane	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
p-Dichlorobenzene	Monitoring	N/A	N/A	Dec 31, 2022	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
Nitrite	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
Nitrite	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
Nitrite	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
Nitrite	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
Nitrite	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
Nitrite	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
Nitrite	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
Nitrite	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
Chlorine	Monitoring	N/A	N/A	Nov 30, 2022	Resolved	Eye and nose irritation; stomach discomfort
Public Notice	Monitoring	N/A	N/A	Nov 21, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Nov 21, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Nov 21, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 11, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 11, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 11, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 11, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 11, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 11, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Active	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Active	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
E. COLI	Monitoring	0	N/A	Sep 13, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Sep 13, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Sep 13, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Chlorine	Monitoring	N/A	N/A	Aug 31, 2022	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Aug 31, 2022	Resolved	Eye and nose irritation; stomach discomfort
Public Notice	Monitoring	N/A	N/A	Jun 11, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 11, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Apr 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Apr 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Apr 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Apr 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
E. COLI	Monitoring	0	N/A	Jul 3, 2021	Active	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 3, 2021	Active	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2025(29)

Interim Enhanced Surface Water Treatment Rule

Aug 31Resolved

Interim Enhanced Surface Water Treatment Rule

Aug 31Resolved

TTHM

Jun 30Resolved

TTHM

Jun 30Resolved

Lead and Copper Rule

Jun 30Active

Lead and Copper Rule

Jun 30Active

Revised Total Coliform Rule

Apr 30Resolved

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

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

Public Notice

Jan 10Resolved

Public Notice

Jan 10Resolved

Public Notice

Jan 10Resolved

Public Notice

Jan 10Resolved

Public Notice

Jan 10Resolved

Public Notice

Jan 10Resolved

Public Notice

Jan 10Resolved

Public Notice

Jan 10Resolved

Public Notice

Jan 10Resolved

Public Notice

Jan 10Resolved

Public Notice

Jan 10Resolved

2024(18)

Chlorine

Sep 30Resolved

Chlorine

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Active

Chlorine

Jul 31Resolved

Chlorine

Jul 31Resolved

Public Notice

Jul 30Resolved

Public Notice

Jul 30Resolved

Public Notice

Jul 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 18Resolved

Revised Total Coliform Rule

Jun 18Resolved

Revised Total Coliform Rule

Jun 18Resolved

Revised Total Coliform Rule

Jun 18Resolved

2023(75)

Revised Total Coliform Rule

Oct 10Resolved

Revised Total Coliform Rule

Oct 10Resolved

Revised Total Coliform Rule

Oct 10Resolved

Revised Total Coliform Rule

Oct 10Resolved

Lead and Copper Rule

Sep 30Active

Groundwater Rule

Jul 1Resolved

Groundwater Rule

Jul 1Resolved

Groundwater Rule

Jul 1Resolved

Groundwater Rule

Jul 1Resolved

Groundwater Rule

Jul 1Resolved

Dalapon

Jun 30Resolved

Dalapon

Jun 30Resolved

Dalapon

Jun 30Resolved

Dalapon

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

Di(2-ethylhexyl) phthalate

Jun 30Resolved

Dalapon

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Public Notice

Jun 18Resolved

Public Notice

Jun 18Resolved

Public Notice

Jun 18Resolved

Public Notice

Jun 18Resolved

Public Notice

Jun 18Resolved

Public Notice

Jun 18Resolved

Public Notice

Jun 18Resolved

Public Notice

Jun 18Resolved

Public Notice

Jun 18Resolved

Public Notice

Jun 18Resolved

Public Notice

Jun 18Resolved

Public Notice

Jun 18Resolved

Public Notice

May 12Resolved

Public Notice

May 12Resolved

Public Notice

May 12Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

May 8Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Nitrite

Mar 31Resolved

Nitrite

Mar 31Resolved

Nitrite

Mar 31Resolved

Nitrite

Mar 31Resolved

Nitrate

Mar 31Resolved

Nitrate

Mar 31Resolved

Nitrate

Mar 31Resolved

Nitrate

Mar 31Resolved

Lead and Copper Rule

Mar 31Resolved

Lead and Copper Rule

Mar 31Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

2022(94)

Toluene

Dec 31Resolved

1,2-Dichloropropane

Dec 31Resolved

1,1,1-Trichloroethane

Dec 31Resolved

1,1,1-Trichloroethane

Dec 31Resolved

1,2-Dichloroethane

Dec 31Resolved

1,2-Dichloroethane

Dec 31Resolved

Tetrachloroethylene

Dec 31Resolved

Tetrachloroethylene

Dec 31Resolved

CHLOROBENZENE

Dec 31Resolved

CHLOROBENZENE

Dec 31Resolved

p-Dichlorobenzene

Dec 31Resolved

Styrene

Dec 31Resolved

Carbon tetrachloride

Dec 31Resolved

Carbon tetrachloride

Dec 31Resolved

Trichloroethylene

Dec 31Resolved

Trichloroethylene

Dec 31Resolved

Benzene

Dec 31Resolved

Benzene

Dec 31Resolved

1,2,4-Trichlorobenzene

Dec 31Resolved

1,2,4-Trichlorobenzene

Dec 31Resolved

cis-1,2-Dichloroethylene

Dec 31Resolved

cis-1,2-Dichloroethylene

Dec 31Resolved

Xylenes, Total

Dec 31Resolved

Xylenes, Total

Dec 31Resolved

DICHLOROMETHANE

Dec 31Resolved

DICHLOROMETHANE

Dec 31Resolved

o-Dichlorobenzene

Dec 31Resolved

o-Dichlorobenzene

Dec 31Resolved

1,1-Dichloroethylene

Dec 31Resolved

1,1-Dichloroethylene

Dec 31Resolved

trans-1,2-Dichloroethylene

Dec 31Resolved

trans-1,2-Dichloroethylene

Dec 31Resolved

Ethylbenzene

Dec 31Resolved

Ethylbenzene

Dec 31Resolved

Toluene

Dec 31Resolved

Styrene

Dec 31Resolved

1,1,2-Trichloroethane

Dec 31Resolved

1,1,2-Trichloroethane

Dec 31Resolved

1,2-Dichloropropane

Dec 31Resolved

p-Dichlorobenzene

Dec 31Resolved

Nitrate

Dec 31Resolved

Nitrate

Dec 31Resolved

Nitrite

Dec 31Resolved

Nitrite

Dec 31Resolved

Nitrite

Dec 31Resolved

Nitrite

Dec 31Resolved

Nitrite

Dec 31Resolved

Nitrite

Dec 31Resolved

Nitrite

Dec 31Resolved

Nitrite

Dec 31Resolved

Nitrate

Dec 31Resolved

Nitrate

Dec 31Resolved

Nitrate

Dec 31Resolved

Nitrate

Dec 31Resolved

Nitrate

Dec 31Resolved

Nitrate

Dec 31Resolved

Chlorine

Nov 30Resolved

Public Notice

Nov 21Resolved

Public Notice

Nov 21Resolved

Public Notice

Nov 21Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 11Resolved

Revised Total Coliform Rule

Oct 11Resolved

Revised Total Coliform Rule

Oct 11Resolved

Revised Total Coliform Rule

Oct 11Resolved

Revised Total Coliform Rule

Oct 11Resolved

Revised Total Coliform Rule

Oct 11Resolved

Lead and Copper Rule

Sep 30Active

Lead and Copper Rule

Sep 30Active

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

E. COLI

Sep 13Resolved

E. COLI

Sep 13Resolved

E. COLI

Sep 13Resolved

Chlorine

Aug 31Resolved

Chlorine

Aug 31Resolved

Public Notice

Jun 11Resolved

Public Notice

Jun 11Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

Total Haloacetic Acids (HAA5)

Mar 31Resolved

How Does This Compare?

DOWNINGTOWN (19335) has 220 recorded violations, including 40 health-based. 8 remain unresolved. Consider testing your tap water independently for added peace of mind.

Recommended Water Filters

Based on the contaminants detected in your area, these filter types may help improve your water quality.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

UV Water Purifier

Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.

Targets:E. coli, Coliform, Giardia, Cryptosporidium

Look for:NSF/ANSI 55 (Class A) certified

NSF Certified Products → EPA Safe Drinking Water Guide →

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

Water Quality in DOWNINGTOWN, PA (19335)

What does this mean?

Violations Detail (220 total)

Lead & Copper Levels

Violation Timeline

2025(29)

2024(18)

2023(75)

2022(94)

2021(4)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

Activated Carbon Filter

UV Water Purifier

Nearby ZIP Codes

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