CORAOPOLIS WATER & SEWER AUTH

Q: Is CORAOPOLIS WATER & SEWER AUTH water safe to drink?

CORAOPOLIS WATER & SEWER AUTH (PWS ID: PA5020010) has 97 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 7 PFAS compounds found. This system serves 5,804 people using Surface Water sources.

Q: What type of violations does CORAOPOLIS WATER & SEWER AUTH have?

CORAOPOLIS WATER & SEWER AUTH has 97 total violations: 14 health-based violations (MCL exceedances or treatment failures), 77 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Q: Has PFAS been detected in CORAOPOLIS WATER & SEWER AUTH water?

Yes. UCMR5 testing detected 7 PFAS compounds in CORAOPOLIS WATER & SEWER AUTH's water supply: PFPeA, PFBA, PFOS, PFBS, PFHxS, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.

Q: What water source does CORAOPOLIS WATER & SEWER AUTH use?

CORAOPOLIS WATER & SEWER AUTH uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Q: Where does this data come from?

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Reviewed byPlainWater Editorial, Drinking Water Quality Editorial Team · June 4, 2026

PWS ID: PA5020010 · CORAOPOLIS, Pennsylvania 15108

CORAOPOLIS WATER & SEWER AUTH serves 5,804 people in CORAOPOLIS, Pennsylvania using Surface Water water sources. It has 97 recorded EPA violations, including 14 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (7 compounds found).

Water Quality Snapshot: CORAOPOLIS WATER & SEWER AUTH

CORAOPOLIS WATER & SEWER AUTH is a local-owned community water system that delivers drinking water to 5,804 residents in CORAOPOLIS, Pennsylvania (Allegheny County) through 2,616 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 97 total violations for this system , of which 14 (14%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 77 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 14 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 7 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 0.0188 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Pennsylvania, EPA tracks 7,701 public water systems serving 12,630,061 people, with 1,159,868 cumulative violations and 68,517 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 150.6 violations. CORAOPOLIS WATER & SEWER AUTH's 97 violations sit below the Pennsylvania average. Statewide, 224 of 389 UCMR5-tested systems have reported PFAS detections (57.6%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

7 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served

5,804

Total Violations

Health-Based Violations

Water Source

Surface Water

System Details

System Type: Community
Owner Type: Local
Connections: 2,616
County: Allegheny
School/Daycare: No
MCL Violations: 14
Monitoring Violations: 77
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Coliform (TCR)	MCL	14	2006
Carbon tetrachloride	MR	8	1991
Trichloroethylene	MR	8	1991
Benzene	MR	8	1991
p-Dichlorobenzene	MR	8	1991
Vinyl chloride	MR	8	1991
1,2-Dichloroethane	MR	8	1991
1,1-Dichloroethylene	MR	8	1991
1,1,1-Trichloroethane	MR	8	1991
Coliform (TCR)	MR	6	2006
Consumer Confidence Rule	Other	3	2004
Gross Alpha, Excl. Radon and U	MR	2	2000
TTHM	MR	2	2024
Chlorine	MR	1	2009
Groundwater Rule	MR	1	2014
2,3,7,8-TCDD	MR	1	2017

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 18 of 180 samples detected PFAS.

Contaminant	Date	Result	MRL	Status
PFMBA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFTA	9/27/2023	<0.008 µg/L	0.008 µg/L	Not Detected
PFTrDA	9/27/2023	<0.007 µg/L	0.007 µg/L	Not Detected
4:2 FTS	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFMPA	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
NFDHA	9/27/2023	<0.02 µg/L	0.02 µg/L	Not Detected
NEtFOSAA	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFPeS	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpS	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
lithium	9/27/2023	<9 µg/L	9 µg/L	Not Detected
PFPeA	9/27/2023	0.0031 µg/L	0.003 µg/L	Detected
8:2 FTS	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
6:2 FTS	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFBA	9/27/2023	0.0062 µg/L	0.005 µg/L	Detected
HFPO-DA	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
ADONA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFOS	9/27/2023	0.0081 µg/L	0.004 µg/L	Detected
NMeFOSAA	9/27/2023	<0.006 µg/L	0.006 µg/L	Not Detected
PFBS	9/27/2023	0.0130 µg/L	0.003 µg/L	Detected
PFHpA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxS	9/27/2023	0.0120 µg/L	0.003 µg/L	Detected
PFNA	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
9Cl-PF3ONS	9/27/2023	<0.002 µg/L	0.002 µg/L	Not Detected
PFOA	9/27/2023	0.0052 µg/L	0.004 µg/L	Detected
PFHxA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFUnA	9/27/2023	<0.002 µg/L	0.002 µg/L	Not Detected
PFDoA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFDA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
11Cl-PF3OUdS	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
NEtFOSAA	9/26/2023	<0.005 µg/L	0.005 µg/L	Not Detected
6:2 FTS	9/26/2023	<0.005 µg/L	0.005 µg/L	Not Detected
4:2 FTS	9/26/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFMPA	9/26/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFMBA	9/26/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	9/26/2023	<0.003 µg/L	0.003 µg/L	Not Detected
NFDHA	9/26/2023	<0.02 µg/L	0.02 µg/L	Not Detected
PFPeS	9/26/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpS	9/26/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFBA	9/26/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFTrDA	9/26/2023	<0.007 µg/L	0.007 µg/L	Not Detected
NMeFOSAA	9/26/2023	<0.006 µg/L	0.006 µg/L	Not Detected
8:2 FTS	9/26/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFTA	9/26/2023	<0.008 µg/L	0.008 µg/L	Not Detected
PFHpA	9/26/2023	<0.003 µg/L	0.003 µg/L	Not Detected
lithium	9/26/2023	<9 µg/L	9 µg/L	Not Detected
PFBS	9/26/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxS	9/26/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFNA	9/26/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFOS	9/26/2023	0.0052 µg/L	0.004 µg/L	Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for CORAOPOLIS WATER & SEWER AUTH.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID PA5020010 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Pennsylvania Drinking Water Authority

Pennsylvania DEP — Bureau of Safe Drinking Water is the primacy agency that licenses and inspects CORAOPOLIS WATER & SEWER AUTH under EPA-delegated authority.

Open PA regulator portal

Source: Pennsylvania DEP — Bureau of Safe Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest)	Contaminant	Category	Count	EPA Record
2024	TTHM	MR	2	SDWIS / PA5020010 / 2950
2017	2,3,7,8-TCDD	MR	1	SDWIS / PA5020010 / 2063
2014	Groundwater Rule	MR	1	SDWIS / PA5020010 / 0700
2009	Chlorine	MR	1	SDWIS / PA5020010 / 0999
2006	Coliform (TCR)	MCL	14	SDWIS / PA5020010 / 3100
2006	Coliform (TCR)	MR	6	SDWIS / PA5020010 / 3100
2004	Consumer Confidence Rule	Other	3	SDWIS / PA5020010 / 7000
2000	Gross Alpha, Excl. Radon and U	MR	2	SDWIS / PA5020010 / 4000
1991	Carbon tetrachloride	MR	8	SDWIS / PA5020010 / 2982
1991	Trichloroethylene	MR	8	SDWIS / PA5020010 / 2984
1991	Benzene	MR	8	SDWIS / PA5020010 / 2990
1991	p-Dichlorobenzene	MR	8	SDWIS / PA5020010 / 2969
1991	Vinyl chloride	MR	8	SDWIS / PA5020010 / 2976
1991	1,2-Dichloroethane	MR	8	SDWIS / PA5020010 / 2980
1991	1,1-Dichloroethylene	MR	8	SDWIS / PA5020010 / 2977

How CORAOPOLIS WATER & SEWER AUTH Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric	CORAOPOLIS WATER & SEWER AUTH	Pennsylvania avg	Federal benchmark
Total violations	97	150.6	SDWA compliance — any non-zero count is a recorded breach
Health-based violations	14	8.9	Indicates a contaminant exceeded a federal MCL
PFAS detection	7 compounds	57.6%	EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served	5,804	1,640	Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,701 regulated public water systems in Pennsylvania.

Federal MCL reference — Safe Drinking Water Act thresholds ▼

Contaminant	Federal MCL / Action Level	Note
Lead	0 mg/L (Action Level: 0.015 mg/L)	Lead and Copper Rule treatment technique
Arsenic	0.010 mg/L (10 ppb)	Health-based MCL since 2006
Total Coliform	Treatment technique (RTCR)	Indicator organism, monitoring trigger
PFOA / PFOS (PFAS)	4.0 ppt each (final 2024 rule)	Compliance deadline 2029
Nitrate (as N)	10 mg/L	Acute health risk for infants

Frequently Asked Questions

Is CORAOPOLIS WATER & SEWER AUTH water safe to drink? ▼

CORAOPOLIS WATER & SEWER AUTH (PWS ID: PA5020010) has 97 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 7 PFAS compounds found. This system serves 5,804 people using Surface Water sources.

How many people does CORAOPOLIS WATER & SEWER AUTH serve? ▼

CORAOPOLIS WATER & SEWER AUTH serves 5,804 people in CORAOPOLIS, Pennsylvania. It is a Local-owned system using Surface Water water sources with 2,616 service connections.

What type of violations does CORAOPOLIS WATER & SEWER AUTH have? ▼

CORAOPOLIS WATER & SEWER AUTH has 97 total violations: 14 health-based violations (MCL exceedances or treatment failures), 77 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in CORAOPOLIS WATER & SEWER AUTH water? ▼

Yes. UCMR5 testing detected 7 PFAS compounds in CORAOPOLIS WATER & SEWER AUTH's water supply: PFPeA, PFBA, PFOS, PFBS, PFHxS, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.

What water source does CORAOPOLIS WATER & SEWER AUTH use? ▼

CORAOPOLIS WATER & SEWER AUTH uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Where does this data come from? ▼

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

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