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Tap water quality report

Mawc Yough Plant

EPA monitoring tested this supplier for 110 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

110
contaminants tested
16
detected
133,000
people served
12
health-based violations
Pennsylvania rankingsLead in PennsylvaniaPFAS in Pennsylvania
Water source
Surface water
Ownership
Local government
Counties served
Fayette

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.

12
health-based violations
152
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2022-10-01 → 2022-12-31
MCL Health-based Resolved 2022-10-01 → 2022-12-31
TT Health-based Resolved 2022-08-01 → 2022-08-31
TT Health-based Resolved 2003-07-01 → 2003-09-30
TT Health-based Resolved 2003-07-01 → 2003-09-30
TT Health-based Resolved 2003-07-01 → 2003-09-30
TT Health-based Resolved 2003-04-01 → 2003-06-30
TT Health-based Resolved 2003-04-01 → 2003-06-30
TT Health-based Resolved 2003-04-01 → 2003-06-30
TT Health-based Resolved 2003-01-01 → 2003-03-31

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
Chloroform
75.46 µg/L
No EPA limit set
worst single sample: 113 µg/L
259/259 SYR4 2012–2019
TTHM
82.4 µg/L 103%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 126 µg/L
259/259 SYR4 2012–2019
Bromodichloromethane
10 µg/L
No EPA limit set
worst single sample: 45 µg/L
258/259 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
69 µg/L 115%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 84 µg/L
254/256 SYR4 2012–2019
Copper
154.85 µg/L 12%
of the EPA limit 1300 µg/L
worst single sample: 667 µg/L
210/215 SYR4 2013–2019
Dibromochloromethane
1.171 µg/L
No EPA limit set
worst single sample: 5 µg/L
60/259 SYR4 2012–2019
Dichloroacetic Acid
34.55 µg/L
No EPA limit set
worst single sample: 39 µg/L
56/56 SYR4 2012–2019
Trichloroacetic Acid
42.5 µg/L
No EPA limit set
worst single sample: 45 µg/L
55/56 SYR4 2012–2019
Monochloroacetic Acid
2.85 µg/L
No EPA limit set
worst single sample: 3.23 µg/L
31/56 SYR4 2012–2019
Nitrate
1080 µg/L 11%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Lead
31.1 µg/L 207%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 36 µg/L
8/160 SYR4 2013–2019
Fluoride
209 µg/L 5.2%
of the EPA limit 4000 µg/L
worst single sample: 220 µg/L
3/8 SYR4 2012–2019
Barium
37.285 µg/L 1.9%
of the EPA limit 2000 µg/L
worst single sample: 37.3 µg/L
2/8 SYR4 2012–2019
Dibromoacetic Acid
2.77 µg/L
No EPA limit set
 1/56 SYR4 2012–2019
Mercury
0.4000 µg/L 20%
of the EPA limit 2 µg/L
 1/8 SYR4 2012–2019
94 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MIKE KUKURA
Phone
724-626-0050

Frequently asked questions about Mawc Yough Plant

Is Mawc Yough Plant tap water safe to drink?

EPA monitoring detected 16 contaminants in Mawc Yough Plant'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 Mawc Yough Plant's water?

EPA monitoring detected Chloroform, TTHM, Bromodichloromethane, Total Haloacetic Acids (HAA5), Copper, and others. The full list with the level and data source for each is above.

How many people does Mawc Yough Plant serve?

Mawc Yough Plant reports serving 133,000 people in Pennsylvania, per its EPA record.

Has Mawc Yough Plant had any water quality violations?

The EPA has 152 violations on file for Mawc Yough Plant, of which 12 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.