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Knottsville, KY Tap Water Quality 2026

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

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

Main Utility: E Daviess Co Water Assoc Inc PWSID: KY0300109 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 3.61 ppb, 24% of the action level and no violations are open. PFAS was detected below the federal limit.

B

Knottsville earns a B for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 3.61 ppb — 24% of the federal action level
PFAS detected below the federal limit
5 violations since 2015, 3 health-based
No violations currently open
Knottsville's lead level vs. all Kentucky community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 3.61 ppb — 24% of the federal action level
✓ Lower lead than 17% of Kentucky utilities
Population Served
183
~5766 connections
Water Source
Groundwater
Purchased groundwater from another system — SDWIS source code GWP
Active Violations
0
5 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
24% of EPA action level
3.61 ppb
Action level: 15 ppb
The 90th-percentile lead result is 3.61 ppb, 24% 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 — — 2018 Resolved
TTHM MCL EXCEEDANCE 0.091 MG/L 0.080 mg/L 2018 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.105 MG/L 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.094 MG/L 0.080 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

5 violations are on record since 2015, of which 3 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility E Daviess Co Water Assoc Inc
PWSID KY0300109
Water source Groundwater — Purchased groundwater from another system — SDWIS source code GWP
Population served 183
Service connections 5,766
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Knottsville tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 3.61 ppb, 24% of the action level.
Does Knottsville water have PFAS? ▼
PFAS was detected but stayed below the federal limit.
Who supplies water to Knottsville? ▼
E Daviess Co Water Assoc Inc (PWSID KY0300109). Groundwater. Purchased groundwater from another system — SDWIS source code GWP
When was this system last inspected? ▼
It was last inspected on 2024-06-13. No significant deficiencies were recorded.

What Should Knottsville 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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