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Knoxville, PA Tap Water Quality 2026

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

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

Main Utility: Knoxville Water Department PWSID: PA2590036 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.00 ppb, 7% of the action level and no violations are open. PFAS has never been sampled at this system.

B

Knoxville earns a B for water quality

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

Lead: 1.00 ppb — 7% of the federal action level
PFAS never sampled at this system
72 violations since 2015, 2 health-based
No violations currently open
Knoxville's lead level vs. all Pennsylvania community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.00 ppb — 7% of the federal action level
✓ Lower lead than 93% of Pennsylvania utilities
Population Served
680
~448 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
72 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
7% of EPA action level
1.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.00 ppb, 7% 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
Nitrate MONITORING AND REPORTING — 10 mg/L 2025 Resolved
Nitrite MONITORING AND REPORTING — 1 mg/L 2025 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2024 Resolved
Consumer Confidence Rule OTHER — — 2024 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2024 Resolved
Nitrite MONITORING AND REPORTING — 1 mg/L 2024 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2022 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2022 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2022 Resolved
Nitrite MONITORING AND REPORTING — 1 mg/L 2022 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2022 Resolved
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2022 Resolved
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2022 Resolved
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2022 Resolved
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2022 Resolved
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Benzene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Toluene MONITORING AND REPORTING — 1 mg/L 2022 Resolved
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2022 Resolved
Styrene MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2020 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2020 Resolved
Groundwater Rule MONITORING AND REPORTING — — 2018 Resolved
Public Notice OTHER — — 2016 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2016 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Consumer Confidence Rule OTHER — — 2015 Resolved
Groundwater Rule MONITORING AND REPORTING — — 2015 Resolved
Endrin MONITORING AND REPORTING — 0.002 mg/L 2015 Resolved
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2015 Resolved
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2015 Resolved
Toxaphene MONITORING AND REPORTING — 0.003 mg/L 2015 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2015 Resolved
Diquat MONITORING AND REPORTING — 0.02 mg/L 2015 Resolved
Endothall MONITORING AND REPORTING — 0.1 mg/L 2015 Resolved
Glyphosate MONITORING AND REPORTING — 0.7 mg/L 2015 Resolved
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2015 Resolved
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2015 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2015 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2015 Resolved
Picloram MONITORING AND REPORTING — 0.5 mg/L 2015 Resolved
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2015 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2015 Resolved
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2015 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2015 Resolved
LASSO MONITORING AND REPORTING — — 2015 Resolved
2,3,7,8-TCDD MONITORING AND REPORTING — 0.00000003 mg/L 2015 Resolved
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2015 Resolved
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2015 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2015 Resolved
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2015 Resolved
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2015 Resolved
Benzo(a)pyrene MONITORING AND REPORTING — 0.0002 mg/L 2015 Resolved
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2015 Resolved
Total Polychlorinated Biphenyls (PCB) MONITORING AND REPORTING — 0.0005 mg/L 2015 Resolved
1,2-DIBROMO-3-CHLOROPROPANE MONITORING AND REPORTING — 0.0002 mg/L 2015 Resolved
ETHYLENE DIBROMIDE MONITORING AND REPORTING — 0.00005 mg/L 2015 Resolved
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2015 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

72 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 Knoxville Water Department
PWSID PA2590036
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 680
Service connections 448
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Knoxville tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.00 ppb, 7% of the action level.
Does Knoxville water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Knoxville? ▼
Knoxville Water Department (PWSID PA2590036). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-02-23. No significant deficiencies were recorded.

What Should Knoxville 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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