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Tap water quality report

Mawc Sweeney Plant

EPA monitoring tested this supplier for 109 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
15
detected
143,000
people served
10
health-based violations
Pennsylvania rankingsLead in PennsylvaniaPFAS in Pennsylvania
Water source
Surface water
Ownership
Local government
Counties served
Westmoreland

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.

10
health-based violations
68
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2019-01-01 → 2019-03-31
TT Health-based Resolved 2019-01-01 → 2019-03-31
TT Health-based Resolved 2019-01-01 → 2019-03-31
TT Health-based Resolved 2018-10-01 → 2018-12-31
TT Health-based Resolved 2018-10-01 → 2018-12-31
TT Health-based Resolved 2018-10-01 → 2018-12-31
TT Health-based Resolved 2018-10-01 → 2018-12-31
TT Health-based Resolved 2018-10-01 → 2018-12-31
TT Health-based Resolved 1992-01-01 → 1996-06-26
TT Health-based Resolved 1992-01-01 → 1996-06-26

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
Bromodichloromethane
12 µg/L
No EPA limit set
worst single sample: 17 µg/L
250/250 SYR4 2012–2019
Chloroform
52.675 µg/L
No EPA limit set
worst single sample: 96 µg/L
250/250 SYR4 2012–2019
TTHM
63.69 µg/L 80%
of the EPA limit 80 µg/L
worst single sample: 111 µg/L
250/250 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
42.94 µg/L 72%
of the EPA limit 60 µg/L
worst single sample: 48.8 µg/L
247/256 SYR4 2012–2019
Copper
208.4 µg/L 16%
of the EPA limit 1300 µg/L
worst single sample: 665 µg/L
237/238 SYR4 2013–2019
Dibromochloromethane
3 µg/L
No EPA limit set
worst single sample: 18.7 µg/L
213/250 SYR4 2012–2019
Dichloroacetic Acid
15.3 µg/L
No EPA limit set
worst single sample: 16.2 µg/L
56/56 SYR4 2013–2019
Trichloroacetic Acid
27.95 µg/L
No EPA limit set
worst single sample: 29.1 µg/L
56/56 SYR4 2013–2019
Lead
16.45 µg/L 110%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 60 µg/L
52/190 SYR4 2013–2019
Monochloroacetic Acid
6.6545 µg/L
No EPA limit set
worst single sample: 8.23 µg/L
40/56 SYR4 2013–2019
Lead
0.0035 mg/L 23%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2025
Nitrate
690 µg/L 6.9%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
Fluoride
237.5 µg/L 5.9%
of the EPA limit 4000 µg/L
worst single sample: 260 µg/L
6/8 SYR4 2012–2019
Barium
33 µg/L 1.7%
of the EPA limit 2000 µg/L
 3/8 SYR4 2012–2019
Cyanide
6.3 µg/L 3.2%
of the EPA limit 200 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, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JOHN ASHTON
Phone
724-755-5800

Frequently asked questions about Mawc Sweeney Plant

Is Mawc Sweeney Plant tap water safe to drink?

EPA monitoring detected 15 contaminants in Mawc Sweeney 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 Sweeney Plant's water?

EPA monitoring detected Bromodichloromethane, Chloroform, TTHM, 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 Sweeney Plant serve?

Mawc Sweeney Plant reports serving 143,000 people in Pennsylvania, per its EPA record.

Has Mawc Sweeney Plant had any water quality violations?

The EPA has 68 violations on file for Mawc Sweeney Plant, of which 10 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.