Is Green Lane Reservoir Polluted?
Yes — Green Lane Reservoir in Montgomery County, Pennsylvania is on the EPA's Clean Water Act 303(d) impaired-waters list (2024 assessment cycle). It is cited for Oxygen depletion (low DO). A formal cleanup plan — a Total Maximum Daily Load (TMDL) — has been written. "Impaired" is a legal designation, separate from the lake's EPA condition class water-quality readings: it means at least one designated use (such as swimming, aquatic life, or fish consumption) does not meet state standards for the listed pollutant.
EPA 303(d) Listing
| On 303(d) impaired list | Listed impaired |
| Cleanup plan (TMDL) | Completed |
| Assessment cycle | 2024 |
| EPA IR category | 4A |
| Uses not supported | Aquatic life |
| EPA names this lake in the listing | Yes |
| Location | Montgomery County, Pennsylvania |
Pollutants Cited
- Oxygen depletion (low DO) — listed by EPA as exceeding water-quality standards for at least one designated use.
Specific parameters in the EPA record: Organic Enrichment.
What this means for using Green Lane Reservoir
Review the EPA assessment and any state advisories before relying on Green Lane Reservoir for swimming, fishing, or other uses. An impairment listing does not mean the lake is closed — most impaired lakes remain open for boating and swimming. It means a specific pollutant exceeds a standard for a specific use. Green Lane Reservoir measures algae (chlorophyll-a) at 45.6 µg/L and phosphorus at 146 µg/L. See the full breakdown on the lake report. The official EPA assessment is available in the ATTAINS waterbody report.
Stays via Stay22
Where to stay near Green Lane Reservoir
Compare cabins, hotels, and vacation rentals near Green Lane Reservoir in Montgomery County, Pennsylvania. Live availability and prices for your nights. Switch the map to Satellite to see how close each stay is to the water.
Top-rated places to stay near Green Lane Reservoir
Prices for Oct 2–4, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Green Lane Reservoir?
Get lake water-quality updates plus the best cabin & lodging deals near Green Lane Reservoir — straight to your inbox. No spam, unsubscribe anytime.
Watch Green Lane Reservoir water quality
Get an email when the clarity or algae readings change. Unsubscribe anytime.