Johnson County, Kentucky · 37.88°N · Water Quality Report Card
Paintsville Lake
Paintsville Lake in Johnson County, Kentucky has a water quality grade of C (Fair). Phosphorus: 19 µg/L.
- Type
- Mesotrophic
- Trend
- ↑ Improving
Paintsville Lake is a mesotrophic lake in Johnson County, Kentucky. Water quality is graded C based on 1 sampling years through 2017. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, KY DOW, last sampled 2017-10-03. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C (Fair)
No clarity data. Phosphorus level: 19 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 19 µg/L | Fair |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Paintsville Lake
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Fishing Paintsville Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -2 µg/L/yr | 2 |
Location
County Ranking
Ranked #1 of 1 lakes in Johnson County
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Where this data comes from
37 measurements from 4 monitoring stations, 2012–2017. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- KY WQX
21KY_WQX37 samples · 2012–2017
Analytical methods
- Phosphorus by Colorimetry
- Total Phosphorus After Block Digestion
Monitoring station identifiers (4)
Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2017-10-03
Monitoring stations: 4