States › Kentucky › Daviess County

Daviess County, KY Water Quality

Water quality data for 4 public water systems serving Daviess County, Kentucky — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 4 water systems · 16 cities
✅
Generally Safe — Most Systems Performing Well

The majority of water systems have no active violations and lead levels well below the federal action level.

B

Daviess County Earns a B

Daviess County: 16 communities across 4 water systems. 100.0% have no open violations.

  • Median lead where detected: 3.61 ppb
  • 3 communities with a lead detection, 13 reporting none detected
  • 12 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
3.61 ppb
Median Lead Level
County-wide, 90th percentile
4
Water Systems
Active CWS & NTNCWS
100%
Violation-Free
No active violations on record
How we grade counties: MyWaterIQ uses EPA SDWIS enforcement data — actual MCL violations and lead test results — not the aspirational MCLG targets used by some sites. A grade reflects real compliance history, not theoretical risk. Learn more →

Cities by Water Quality

⭐ Best Performing
  • Owensboro
    Not detected
    No federal limits exceeded on record
    A
  • Yelvington
    3.61 ppb
    3 health-based violations since 2015
    B
  • Maceo
    3.61 ppb
    3 health-based violations since 2015
    B
  • Knottsville
    3.61 ppb
    3 health-based violations since 2015
    B
  • Masonville
    Not detected
    PFAS above the limit at 1 of 2 sampling points
    B
⚠ Needs Attention
  • Masonville
    Not detected
    PFAS above the limit at 1 of 2 sampling points
    B
  • Thruston
    Not detected
    PFAS above the limit at 1 of 2 sampling points
    B
  • Sorgho
    Not detected
    PFAS above the limit at 1 of 2 sampling points
    B
  • Philpot
    Not detected
    PFAS above the limit at 1 of 2 sampling points
    B
  • Whitesville
    Not detected
    PFAS above the limit at 1 of 1 sampling points
    B
County Lead Level — Median 3.61 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 3.61 ppb — 24.1% of the federal action level
Systems by Lead Level
Under 5 ppb
3
No Data
13

All Cities in Daviess County

Owensboro Not detected A
Masonville Not detected B
Thruston Not detected B
Sorgho Not detected B
Philpot Not detected B
Whitesville Not detected B
Moseleyville Not detected B
Yelvington 3.61 ppb B
Maceo 3.61 ppb B
Stanley Not detected B
Utica Not detected B
Knottsville 3.61 ppb B
Panther Not detected B
St. Joseph Not detected B
Curdsville Not detected B
West Louisville Not detected B
Showing 16 cities
No active violations Active violations

About Daviess County Drinking Water

Daviess County is served by 4 water systems covering 16 communities. No community here has an open violation on record.

Of the communities reporting lead results, 3 recorded a detection, with a median of 3.61 ppb — 24% of the federal action level. 13 reported none detected, which means below the laboratory limit rather than an absence of lead.

12 of 16 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded no significant deficiencies.

Frequently Asked Questions

Is Daviess County tap water safe to drink?▼
No community in Daviess County has an open violation on record. 12 of 16 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Daviess County?▼
Among communities with a detection the median is 3.61 ppb, 24% of the 15 ppb action level. 13 reported none detected and 0 reported no result.
How many water systems serve Daviess County?▼
4 community water systems serve 16 communities here.
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