States ›Pennsylvania ›Allegheny County ›Tarentum

Tarentum, PA Tap Water Quality 2026

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

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

Main Utility: Tarentum Boro Water Dept PWSID: PA5020055 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.81 ppb, 12% of the action level and no violations are open. PFAS was sampled but not enough times for a compliance determination.

B

Tarentum earns a B for water quality

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

Lead: 1.81 ppb — 12% of the federal action level
PFAS sampled, too few results to judge
24 violations since 2015, 4 health-based
No violations currently open
Tarentum's lead level vs. all Pennsylvania community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.81 ppb — 12% of the federal action level
✓ Lower lead than 74% of Pennsylvania utilities
Population Served
4274
~1850 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
24 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
12% of EPA action level
1.81 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.81 ppb, 12% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Public Notice OTHER — — 2026 Unaddressed
Public Notice OTHER — — 2026 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2026 Archived
Surface Water Treatment Rule MONITORING AND REPORTING — — 2026 Archived
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2026 Archived
TTHM MCL EXCEEDANCE 0.102 MG/L 0.080 mg/L 2026 Archived
CARBON, TOTAL MONITORING AND REPORTING — TT 2026 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2025 Archived
Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2025 Archived
Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Archived
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2025 Archived
Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Archived
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Archived
TTHM MCL EXCEEDANCE 0.1 MG/L 0.080 mg/L 2025 Archived
CARBON, TOTAL MONITORING AND REPORTING — TT 2025 Archived
TTHM MCL EXCEEDANCE 0.093 MG/L 0.080 mg/L 2025 Resolved
TTHM MCL EXCEEDANCE 0.09 MG/L 0.080 mg/L 2025 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2023 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2022 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 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

24 violations are on record since 2015, of which 4 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Tarentum Boro Water Dept
PWSID PA5020055
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 4,274
Service connections 1,850
Systems serving this area 5
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Tarentum tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.81 ppb, 12% of the action level.
Does Tarentum water have PFAS? ▼
It was sampled, but no sampling point had enough results for a compliance determination.
Who supplies water to Tarentum? ▼
Tarentum Boro Water Dept (PWSID PA5020055), one of 5 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2024-06-13. No significant deficiencies were recorded.

What Should Tarentum 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.

Nearby Cities in Pennsylvania

Pittsburgh, Pa Tap Water Quality 2026 Allegheny Mount Lebanon, Pa Tap Water Quality 2026 Allegheny Bethel Park municipality, Pa Tap Water Quality 2026 Allegheny Ross, Pa Tap Water Quality 2026 Allegheny McCandless, Pa Tap Water Quality 2026 Allegheny Shaler, Pa Tap Water Quality 2026 Allegheny