Mawc Yough Plant
EPA ID: PA5260036 · 133,000 people served · 44 ZIP codes
ZipCheckup's reading of EPA SDWIS for Mawc Yough Plant (PA5260036): 2 past health-based violations, since resolved. Since the flagged events, Mawc Yough Plant resolved all 8 violations - compliant today, 133,000 residents served.
Data: EPA SDWIS
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.
Infrastructure Risk
Detected Contaminants
How Mawc Yough Plant compares to EPA limits
What This Means For You
Total Trihalomethanes (TTHM) at 1 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
E. coli at 3 Zero tolerance (any positive sample triggers immediate action) exceeds the EPA maximum of Zero tolerance (any positive sample triggers immediate action). Severe GI illness; potentially fatal kidney failure in children. Consider UV disinfection (99.99%) filtration.
Contaminant 1036 at 1 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.
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).
Total Trihalomethanes (TTHM) 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 44 ZIP codes across 44 communities.
ZIP-Area Home Safety Context: C (63/100)
This is the average Home Safety Score for 23 of 44 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Status breakdown for accepted records with record years 2021-2026: 7 resolved, 1 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| November 1, 2025 | E. coli | Non-health-based | Archived |
| July 1, 2025 | Chlorite | Non-health-based | Resolved |
| July 1, 2024 | E. coli | Non-health-based | Resolved |
| October 1, 2022 | Surface Water Treatment Rule | Non-health-based | Resolved |
| October 1, 2022 | Total Trihalomethanes (TTHM) | Health-based | Resolved |
| August 1, 2022 | E. coli | Health-based | Resolved |
| August 1, 2021 | Fecal Coliform | Non-health-based | Resolved |
| January 1, 2021 | Contaminant 1036 | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| E. coli | Microbiological | 3 | Yes |
| Contaminant 1036 | Other Violation | 1 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 1 | Yes |
| Chlorite | Disinfection Byproducts | 1 | No |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
| Fecal Coliform | Microbiological | 1 | No |
Health Risk Details
E. coli (EPA limit: Zero tolerance (any positive sample triggers immediate action))
Severe GI illness; potentially fatal kidney failure in children At-risk groups: children under 5, elderly, immunocompromised individuals, pregnant women.
Removal methods: UV disinfection (99.99%), chlorination, reverse osmosis. Find the right filter →
Total Trihalomethanes (TTHM) (EPA limit: 0.08 mg/L)
Bladder & rectal cancer risk; reproductive concerns At-risk groups: pregnant women, long-term consumers of chlorinated water, people who frequently shower in chlorinated water.
Removal methods: granular activated carbon (GAC), carbon block filter, point-of-entry aeration. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by PA or modeled from parcel and building-footprint data.
This system serves 44 ZIP codes:
15012 · 15020 · 15037 · 15063 · 15072 15083 · 15087 · 15089 · 15131 · 15425 15428 · 15448 · 15473 · 15479 · 15601 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?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Mawc Yough Plant; its 8 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Mawc Yough Plant serve?
Mawc Yough Plant serves approximately 133,000 people across 44 ZIP codes in Pennsylvania.
Where does Mawc Yough Plant get its water?
The primary water source is surface water.
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 →
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
How to cite this page
ZipCheckup. (n.d.). Mawc Yough Plant (PA): 2 Health Violations. https://zipcheckup.com/water-system/pa5260036/
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title = {{Mawc Yough Plant (PA): 2 Health Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/pa5260036/}
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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.