Mawc Yough Plant
EPA ID: PA5260036 · 133,000 people served · 46 ZIP codes
Compliance tracking for Mawc Yough Plant shows 2 pending violations logged in the EPA system — the supplier delivers water to approximately 133,000 residents while those findings remain open.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 8 (2021) to 7 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Mawc Yough Plant Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Mawc Yough Plant serves a community with a median household income of $67,969 and an estimated 273,032 residents across its service area. Approximately 84% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Mawc Yough Plant's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Fayette County, Pennsylvania rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How Mawc Yough Plant compares to EPA limits
What This Means For You
Atrazine at 1 mg/L exceeds the EPA maximum of 0.003 mg/L. Endocrine disruption, cardiovascular & reproductive effects. Consider granular activated carbon (GAC) filtration.
Uranium at 1 mg/L exceeds the EPA maximum of 0.03 mg/L. Kidney toxicity, increased cancer risk. Consider reverse osmosis filtration.
Surface Water Treatment Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Lead and Copper Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Revised Total Coliform Rule at 2 presence exceeds the EPA maximum of presence.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 6 detections recorded. 2 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Atrazine was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Mawc Yough Plant (EPA ID: PA5260036) is a community water system in Pennsylvania that serves approximately 133,000 people from surface water sources.
This system provides water to 46 ZIP codes across 44 communities.
Average Home Safety Score: C (56/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Resolved |
| January 11, 2024 | Lead and Copper Rule | Monitoring | Unresolved |
| January 1, 2024 | Contaminant 2959 | Monitoring | Resolved |
| October 1, 2023 | Revised Total Coliform Rule | Monitoring | Resolved |
| October 1, 2023 | Surface Water Treatment Rule | Monitoring | Resolved |
| September 11, 2023 | Lead and Copper Rule | Monitoring | Resolved |
| June 1, 2023 | Revised Total Coliform Rule | Monitoring | Resolved |
| June 1, 2023 | Contaminant 0700 | Monitoring | Resolved |
| April 1, 2023 | Revised Total Coliform Rule | Monitoring | Resolved |
| January 1, 2023 | Copper | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Failure | 3 | No |
| Lead and Copper Rule | Treatment Failure | 3 | No |
| Revised Total Coliform Rule | Microbiological | 2 | No |
| Copper | Inorganic | 1 | No |
| Uranium | Radionuclides | 1 | No |
| Atrazine | Organic | 1 | No |
| Contaminant 2959 | Other Violation | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
| Contaminant 0700 | Other Violation | 1 | No |
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 44 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 2 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 46 ZIP codes:
15012 · 15020 · 15037 · 15063 · 15072 15083 · 15087 · 15089 · 15131 · 15425 15428 · 15448 · 15473 · 15479 · 15601 15605 · 15606 · 15610 · 15611 · 15612 15616 · 15617 · 15625 · 15631 · 15637 15638 · 15639 · 15640 · 15642 · 15644 15650 · 15660 · 15663 · 15666 · 15672 15674 · 15676 · 15678 · 15679 · 15683 15688 · 15689 · 15691 · 15695 · 15697 15698
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Mawc Yough Plant (PA5260036) on EPA.gov.
Frequently Asked Questions
Is Mawc Yough Plant water safe to drink?
Mawc Yough Plant has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does Mawc Yough Plant serve?
Mawc Yough Plant serves approximately 133,000 people across 46 ZIP codes in Pennsylvania.
Where does Mawc Yough Plant get its water?
The primary water source is surface water.
Contact Your Water Utility
Public-record contact information for the water utility serving this system. Use these channels to request water quality reports, ask about service, or report issues directly.
Contact information from Municipal Authority of Westmoreland County (MAWC) - Indian Creek Water Treatment Plant Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility, does not act as its agent, and does not provide customer support for it. Contact details shown are public-record information from CCR filings. For service issues, contact the utility directly using the information above.
Water Source & Treatment
Where this water originates and how it's treated before reaching your tap.
Source: Municipal Authority of Westmoreland County (MAWC) - Indian Creek Water Treatment Plant Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility. Treatment and source data are sourced from the utility's published CCR filings.
Most susceptible to non-point source pollution, accidental spills along transportation corridors, land disruptions, mine discharges, underground petroleum transmission pipelines, petroleum storage tanks and sewage treatment plant discharges
Treatment regime
How this utility classifies its treatment process and what each reported treatment chemical does.
Treatment chemicals and what each one does
Chemical names are reported verbatim by the utility. Purpose categories are ZipCheckup annotations based on standard drinking-water treatment practice.
Watershed exposure sources reported
Land-use and natural conditions identified in the utility's source-water assessment as potential contamination sources upstream of treatment.
Treatment classification and chemical list sourced from Municipal Authority of Westmoreland County (MAWC) - Indian Creek Water Treatment Plant Consumer Confidence Report.
Treatment intensity is a ZipCheckup-derived classification based on the chemicals and processes the utility reports. Chemicals and contamination sources are taken verbatim from the utility's CCR filing. Routine federal monitoring and contaminant testing shown elsewhere on this page determine whether the water meets safety standards, not the treatment classification.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Notable events and violations
This section summarizes events the utility chose to disclose in its most recent Consumer Confidence Report, plus any federal compliance violations the utility recorded against itself. Both lists are utility-authored — ZipCheckup does not audit, judge, or reorder them.
Notable events from the utility's CCR
These bullet entries are the utility's own narration of operational, regulatory, or infrastructure events during the reporting period.
- MAWC does not fluoridate any of the water supplied from treatment facilities. Indian Creek WTP PWSID 5260036 is part of MAWC multi-plant CCR. Data table not extracted from this text segment (encoding issues in source PDF).
ZipCheckup note: items above reflect what the utility published in its most recent CCR. Federal violation records are also tracked separately by the EPA Safe Drinking Water Information System (SDWIS) — the SDWIS record is the authoritative federal source for any specific regulatory action.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
- #76 / 100 Highest Exposure Burden (U.S.)
- #4 / 50 Highest Exposure Burden (Pennsylvania)
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Mawc Yough Plant (EPA ID: PA5260036) — request the latest Consumer Confidence Report or ask about specific contaminants.