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South Huntingdon, PA Tap Water Quality 2026

Water quality report for South Huntingdon, PA — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at South Huntingdon's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Mawc Yough Plant PWSID: PA5260036 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. PFAS was sampled but not enough times for a compliance determination.

B

South Huntingdon earns a B for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: not detected
PFAS sampled, too few results to judge
12 violations since 2015, 2 health-based
No violations currently open
South Huntingdon's lead level vs. all Pennsylvania community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Pennsylvania utilities
Population Served
5394
~120175 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
12 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Archived
CARBON, TOTAL MONITORING AND REPORTING — TT 2025 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Resolved
Consumer Confidence Rule OTHER — — 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.065 MG/L 0.060 mg/L 2022 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2022 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2021 Resolved
Nickel MONITORING AND REPORTING — — 2021 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2018 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2017 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2017 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2017 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

12 violations are on record since 2015, of which 2 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Mawc Yough Plant
PWSID PA5260036
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 5,394
Service connections 120,175
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is South Huntingdon tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does South Huntingdon water have PFAS? ▼
It was sampled, but no sampling point had enough results for a compliance determination.
Who supplies water to South Huntingdon? ▼
Mawc Yough Plant (PWSID PA5260036). Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2023-06-15. No significant deficiencies were recorded.

What Should South Huntingdon Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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