Lake Petonia
Chenango County, New YorkView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- Limited data
Lake Petonia in Chenango County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 20.2 ft visibility.
- Clarity
- 20.2 ft
- Trend
- ↑ Improving
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Stays near Lake Petonia
Compare lakeside cabins, hotels, and vacation rentals near Lake Petonia in Chenango County, New York — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
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Watch Lake Petonia’s letter
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Why Lake Petonia has no grade
Lake Petonia has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Lake Petonia is Not Rated — not an F. Its 20.2-foot median from 10 readings collected 2020–2022 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. Everything below that has been measured is still reported on this page.
Sampling is run by NYSDEC and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Petonia is a lake in Chenango County, New York. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2022-07-05. Grade methodology: LakeQuality methodology.
What Lake Petonia is good for
From access and monitoring records, not editorial picks.
- Clear water20.2 ft of visibility
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Lake Petonia
These readings exist but are not enough for an A–F grade — see why.
Crystal clear, you can see 20.2 ft down. TSI 34.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 20.2 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 34 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Fishing Lake Petonia
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.81 m/yr | 3 |
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Lake Petonia under Clean Water Act (NPDES) discharge permits. 3 facilities have a reported Clean Water Act violation in the past three years.
- Greene Technologies, IncGreene · 1.3 mi away · NPDES NY0086479Recent violation
- Greene (V) WwtpGreene · 1.5 mi away · NPDES NY0021407Recent violation
- Mirabito Fuel GroupGreene · 1.6 mi away · NPDES NY0157490Recent 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.
Nearby Lakes in Chenango County
Frequently asked questions about Lake Petonia
Where is Lake Petonia?
- Lake Petonia is a lake in Chenango County, New York. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Lake Petonia?
- Lake Petonia in Chenango County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 20.2 ft visibility.
Is Lake Petonia safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Lake Petonia across LakeQuality
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Where this data comes from
10 measurements from 1 monitoring station, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS10 samples · 2020–2022
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)