Tap WaterIndex

← Pennsylvania

Tap water quality report

Mountain Water Assn

EPA monitoring tested this supplier for 110 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

110
contaminants tested
19
detected
3,856
people served
8
health-based violations
Pennsylvania rankingsLead in PennsylvaniaPFAS in Pennsylvania
Water source
SWP
Ownership
Private
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.

8
health-based violations
276
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2021-07-30
TT Health-based Resolved 2021-07-30
MCL Health-based Resolved 2021-06-01 → 2021-06-30
MCL Health-based Resolved 2021-06-01 → 2021-06-30
MCL Health-based Resolved 2021-06-01 → 2021-06-30
MCL Health-based Resolved 2021-06-01 → 2021-06-30
MCL Health-based Resolved 2007-12-01 → 2007-12-31
MCL Health-based Resolved 2007-12-01 → 2007-12-31
MR Monitoring Archived 2025-11-01 → 2025-11-30
MR Monitoring Archived 2025-11-01 → 2025-11-30

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
595.35 µg/L 46%
of the EPA limit 1300 µg/L
worst single sample: 688 µg/L
80/80 SYR4 2013–2019
Bromodichloromethane
10.17 µg/L
No EPA limit set
worst single sample: 11.8 µg/L
64/64 SYR4 2012–2019
TTHM
62.95 µg/L 79%
of the EPA limit 80 µg/L
worst single sample: 75.9 µg/L
64/64 SYR4 2012–2019
Chloroform
51 µg/L
No EPA limit set
worst single sample: 62.4 µg/L
63/64 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
42.17 µg/L 70%
of the EPA limit 60 µg/L
worst single sample: 50.5 µg/L
63/64 SYR4 2012–2019
Dibromochloromethane
4.01 µg/L
No EPA limit set
worst single sample: 6.12 µg/L
56/64 SYR4 2012–2019
Dichloroacetic Acid
22.3 µg/L
No EPA limit set
worst single sample: 23 µg/L
15/16 SYR4 2015–2019
Trichloroacetic Acid
23.96 µg/L
No EPA limit set
worst single sample: 27.6 µg/L
15/16 SYR4 2015–2019
Lead
0.0018 mg/L 12%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2025
Bromoform
2.553 µg/L
No EPA limit set
worst single sample: 2.79 µg/L
7/64 SYR4 2012–2019
Monochloroacetic Acid
20.5 µg/L
No EPA limit set
worst single sample: 21 µg/L
3/16 SYR4 2015–2019
Barium
34.185 µg/L 1.7%
of the EPA limit 2000 µg/L
worst single sample: 34.3 µg/L
2/3 SYR4 2012–2018
Nitrate
1670 µg/L 17%
of the EPA limit 10000 µg/L
 2/16 SYR4 2012–2019
Lithium
10.5 µg/L
No EPA limit set
 2/8 UCMR-5 2023
Dalapon
1.4 µg/L 0.7%
of the EPA limit 200 µg/L
 1/11 SYR4 2012–2019
Dibromoacetic Acid
2 µg/L
No EPA limit set
 1/16 SYR4 2015–2019
Fluoride
649 µg/L 16%
of the EPA limit 4000 µg/L
 1/3 SYR4 2012–2018
Monobromoacetic Acid
1 µg/L
No EPA limit set
 1/16 SYR4 2015–2019
Picloram
0.1200 µg/L 0%
of the EPA limit 500 µg/L
 1/11 SYR4 2012–2019
91 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, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PATRICK L. MARTIN
Phone
724-564-7510

Frequently asked questions about Mountain Water Assn

Is Mountain Water Assn tap water safe to drink?

EPA monitoring detected 19 contaminants in Mountain Water Assn'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 Mountain Water Assn's water?

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

How many people does Mountain Water Assn serve?

Mountain Water Assn reports serving 3,856 people in Pennsylvania, per its EPA record.

Has Mountain Water Assn had any water quality violations?

The EPA has 276 violations on file for Mountain Water Assn, of which 8 are health-based (a contaminant limit or required treatment was breached) and 2 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.