An independent public resourceEnglish Español
PublicWater Watch

Mawc Yough Plant

Published drinking-water records and contacts for Mawc Yough Plant. System PA5260036. Review sources and dates; not a real-time water assessment.

System ID
PA5260036
State or territory
PA
Published population served
133000
System type (source code)
CWS

Published records and dates

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Read the provider’s annual water quality report

Report link listed: 2026-10-13. This is not the report’s sampling date.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
SubstancePublished resultReporting limitSample dateSampling location
11Cl-PF3OUdS< 0.005 µg/L0.005 µg/L2025-06-24Plant Clearwell / 101
4:2 FTS< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
6:2 FTS< 0.005 µg/L0.005 µg/L2025-06-24Plant Clearwell / 101
8:2 FTS< 0.005 µg/L0.005 µg/L2025-06-24Plant Clearwell / 101
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-06-24Plant Clearwell / 101
ADONA< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
HFPO-DA< 0.005 µg/L0.005 µg/L2025-06-24Plant Clearwell / 101
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-06-24Plant Clearwell / 101
NFDHA< 0.02 µg/L0.02 µg/L2025-06-24Plant Clearwell / 101
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-06-24Plant Clearwell / 101
PFBA< 0.005 µg/L0.005 µg/L2025-06-24Plant Clearwell / 101
PFBS< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
PFDA< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
PFDoA< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
PFEESA< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
PFHpA< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
PFHpS< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
PFHxA< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
PFHxS< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
PFMBA< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
PFMPA< 0.004 µg/L0.004 µg/L2025-06-24Plant Clearwell / 101
PFNA< 0.004 µg/L0.004 µg/L2025-06-24Plant Clearwell / 101
PFOA< 0.004 µg/L0.004 µg/L2025-06-24Plant Clearwell / 101
PFOS< 0.004 µg/L0.004 µg/L2025-06-24Plant Clearwell / 101
PFPeA< 0.003 µg/L0.003 µg/L2025-06-24Plant Clearwell / 101
PFPeS< 0.004 µg/L0.004 µg/L2025-06-24Plant Clearwell / 101
PFTA< 0.008 µg/L0.008 µg/L2025-06-24Plant Clearwell / 101
PFTrDA< 0.007 µg/L0.007 µg/L2025-06-24Plant Clearwell / 101
PFUnA< 0.002 µg/L0.002 µg/L2025-06-24Plant Clearwell / 101
lithium< 9 µg/L9 µg/L2025-03-11Plant Clearwell / 101

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
SubstancePublished 90th percentileMonitoring periodSource quarter
Lead (PB90) 0 mg/L2025-06-01 – 2025-09-302026Q3
Lead (PB90) 0 mg/L2022-06-01 – 2022-09-302026Q3
Lead (PB90) 0 mg/L2019-06-01 – 2019-09-302026Q3
Lead (PB90) 0 mg/L2018-06-01 – 2018-09-302026Q3
Lead (PB90) 0 mg/L2016-06-01 – 2016-09-302026Q3
Lead (PB90) 0 mg/L2013-06-01 – 2013-09-302026Q3
Lead (PB90) 0 mg/L2010-01-01 – 2010-12-312026Q3
Lead (PB90) 0 mg/L2007-01-01 – 2007-12-312026Q3

Published compliance history

16 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Twenty most recent imported compliance records
Rule / recordPeriodRecorded statusHealth-based (EPA classification)Source quarter
Surface Water Treatment Rule / Monitoring of Treatment (SWTR-Filter)2025-11-01 – 2025-11-30ResolvedNo2026Q3
Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)2025-07-01 – 2025-09-30ResolvedNo2026Q3
Surface Water Treatment Rule / Monitoring of Treatment (SWTR-Filter)2024-07-01 – 2024-07-31ResolvedNo2026Q3
Consumer Confidence Rule / Consumer Confidence Report Inadequate Reporting2022-10-01 – —ResolvedNo2026Q3
Stage 2 Disinfectants and Disinfection Byproducts Rule / Maximum Contaminant Level Violation, Average2022-10-01 – 2022-12-31ResolvedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)2022-08-01 – 2022-08-31ResolvedYes2026Q3
Interim and Long Term 1 Enhanced Surface Water Treatment Rule / Monitoring, Turbidity (Enhanced SWTR)2021-08-01 – 2021-08-31ResolvedNo2026Q3
Inorganic Chemicals / Monitoring, Regular2021-01-01 – 2021-12-31ResolvedNo2026Q3
Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)2018-01-01 – 2018-03-31ResolvedNo2026Q3
Surface Water Treatment Rule / Monitoring of Treatment (SWTR-Filter)2017-11-01 – 2017-11-30ResolvedNo2026Q3
Interim and Long Term 1 Enhanced Surface Water Treatment Rule / Monitoring, Turbidity (Enhanced SWTR)2017-11-01 – 2017-11-30ResolvedNo2026Q3
Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)2017-10-01 – 2017-12-31ResolvedNo2026Q3
Surface Water Treatment Rule / Monitoring of Treatment (SWTR-Filter)1992-03-01 – 1992-03-31ArchivedNo2026Q3
Radionuclides and Revised Rad Rule / Monitoring, Regular1983-07-01 – 1987-06-30ArchivedNo2026Q3
Radionuclides and Revised Rad Rule / Monitoring, Regular1983-07-01 – 1987-06-30ArchivedNo2026Q3
Radionuclides and Revised Rad Rule / Monitoring, Regular1983-07-01 – 1987-06-30ArchivedNo2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

Administrative contact (EPA filing)

Mawc Yough Plant: 724-626-0050

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records