Peach Lake is a mesotrophic lake in Putnam County, New York. Water quality is graded C based on 1 sampling years through 2020. Compared to the 12 other monitored lakes in Putnam County, Peach Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, New York DNR, last sampled 2020-09-27. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 7.2 ft. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.2 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Peach Lake
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Fishing Peach Lake
Location
County Ranking
Ranked #5 of 13 lakes in Putnam County
Nearby Lakes in Putnam County
Explore Peach Lake across LakeGrade
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Species activity outlook by water temperature and season
Where to stay at New York's top lakes, each with its grade
Moderate nutrients, good water quality
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More records, surveys & data sources
EPA Impairment Status
Peach Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NY1302-0004 · Official waterbody report
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
14 EPA-permitted facilities operate within about 5 miles of Peach Lake under Clean Water Act (NPDES) discharge permits. 9 facilities have a reported Clean Water Act violation in the past three years.
- Peach Lake Sewer District WwtpSoutheast, Town Of · 0.7 mi away · NPDES NY0274526Recent violation
- I-684 Rest Area #45Southeast, Town Of · 1.7 mi away · NPDES NY0035955Recent violation
- Brewster (V) StpBrewster · 2.9 mi away · NPDES NY0026581Recent violation
- Reed Farm Condominiums StpBrewster · 3 mi away · NPDES NY0145858Recent violation
- Lakeland Merit Armstrong IncBrewster · 3.3 mi away · NPDES NY0248002Recent violation
- Meenan Oil Co.Brewster · 3.3 mi away · NPDES NY0235059Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2020-09-27
Monitoring stations: 1