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Tap water quality report

Coraopolis Water & Sewer Auth

EPA monitoring tested this supplier for 108 contaminants and detected 29. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
29
detected
5,804
people served
14
health-based violations
Pennsylvania rankingsLead in PennsylvaniaPFAS in Pennsylvania
Water source
SWP
Ownership
Local government
Counties served
Allegheny

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

14
health-based violations
96
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2006-06-01 → 2006-06-30
MCL Health-based Resolved 2006-06-01 → 2006-06-30
MCL Health-based Resolved 2006-06-01 → 2006-06-30
MCL Health-based Resolved 2006-06-01 → 2006-06-30
MCL Health-based Resolved 1998-09-01 → 1998-09-30
MCL Health-based Resolved 1998-09-01 → 1998-09-30
MCL Health-based Resolved 1998-09-01 → 1998-09-30
MCL Health-based Resolved 1998-09-01 → 1998-09-30
MCL Health-based Resolved 1998-09-01 → 1998-09-30
MCL Health-based Resolved 1998-09-01 → 1998-09-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFOS 0.0188 µg/L 5/6 2023
PFHXS 0.0126 µg/L 4/6 2023
Pfba 0.0062 µg/L 2/6 2023
PFBS 0.0146 µg/L 2/6 2023
Pfhxa 0.0032 µg/L 2/6 2023
PFOA 0.0052 µg/L 2/6 2023
Pfpea 0.0031 µg/L 1/6 2023

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
606.9 µg/L 47%
of the EPA limit 1300 µg/L
worst single sample: 663 µg/L
62/62 SYR4 2013–2019
Bromodichloromethane
19.09 µg/L
No EPA limit set
worst single sample: 21.7 µg/L
35/35 SYR4 2012–2019
Bromoform
13.89 µg/L
No EPA limit set
worst single sample: 15.6 µg/L
35/35 SYR4 2012–2019
Chloroform
9.48 µg/L
No EPA limit set
worst single sample: 11 µg/L
35/35 SYR4 2012–2019
Dibromochloromethane
25.15 µg/L
No EPA limit set
worst single sample: 27.7 µg/L
35/35 SYR4 2012–2019
Lead
13 µg/L 87%
of the EPA limit 15 µg/L
worst single sample: 42.1 µg/L
30/62 SYR4 2013–2019
Nitrate
1550 µg/L 16%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
TTHM
68.53 µg/L 86%
of the EPA limit 80 µg/L
worst single sample: 74.9 µg/L
15/15 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
19.79 µg/L 33%
of the EPA limit 60 µg/L
worst single sample: 27 µg/L
15/15 SYR4 2012–2019
Lead
0.0043 mg/L 29%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
1,1,1-Trichloroethane
6.13 µg/L 3.1%
of the EPA limit 200 µg/L
worst single sample: 8.6 µg/L
11/13 SYR4 2012–2019
cis-1,2-Dichloroethylene
5.88 µg/L 8.4%
of the EPA limit 70 µg/L
worst single sample: 6.6 µg/L
10/13 SYR4 2012–2019
1,1-Dichloroethylene
1.5975 µg/L 23%
of the EPA limit 7 µg/L
worst single sample: 2 µg/L
8/13 SYR4 2012–2019
Dibromoacetic Acid
6.919 µg/L
No EPA limit set
worst single sample: 7.03 µg/L
4/4 SYR4 2019
Dichloroacetic Acid
4.422 µg/L
No EPA limit set
worst single sample: 4.47 µg/L
4/4 SYR4 2019
Tetrachloroethylene
1.61 µg/L 32%
of the EPA limit 5 µg/L
worst single sample: 1.7 µg/L
3/13 SYR4 2012–2019
Fluoride
345 µg/L 8.6%
of the EPA limit 4000 µg/L
worst single sample: 350 µg/L
2/3 SYR4 2012–2018
Trichloroacetic Acid
1.0595 µg/L
No EPA limit set
worst single sample: 1.06 µg/L
2/4 SYR4 2019
Carbon Tetrachloride
0.5000 µg/L 10%
of the EPA limit 5 µg/L
 1/12 SYR4 2012–2019
Monochloroacetic Acid
4.88 µg/L
No EPA limit set
 1/4 SYR4 2019
Trichloroethylene
0.5000 µg/L 10%
of the EPA limit 5 µg/L
 1/13 SYR4 2012–2019
trans-1,2-Dichloroethylene
0.5610 µg/L 0.6%
of the EPA limit 100 µg/L
 1/12 SYR4 2012–2019
79 contaminants tested, none detected
1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideXylenes, TotalLithiumO-DichlorobenzeneP-Dichlorobenzene

Utility contact

Contact
Rich Deems
Phone
412-264-3003

Frequently asked questions about Coraopolis Water & Sewer Auth

Is Coraopolis Water & Sewer Auth tap water safe to drink?

EPA monitoring detected 29 contaminants in Coraopolis Water & Sewer Auth's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Coraopolis Water & Sewer Auth's water?

EPA monitoring detected Copper, Bromodichloromethane, Bromoform, Chloroform, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Coraopolis Water & Sewer Auth serve?

Coraopolis Water & Sewer Auth reports serving 5,804 people in Pennsylvania, per its EPA record.

Has Coraopolis Water & Sewer Auth had any water quality violations?

The EPA has 96 violations on file for Coraopolis Water & Sewer Auth, of which 14 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.