Passage Data · Check a report · Use it from your AI
Water Supply, Downingtown, Pennsylvania. NPDES permit PA0052949, in force until Mar 31, 2027. Last 12 months: no values over a limit, 35 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | report only (mg/L) | all year | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 40 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ .5 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 1 lb/d | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | monthly average | ≤ 2 mg/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 001 |
| Iron, total [as Fe] | monthly average | ≤ .05 lb/d | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ .1 lb/d | all year | 001 |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | 001 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 001 |
| Manganese, total [as Mn] | monthly average | ≤ .025 lb/d | all year | 001 |
| Manganese, total [as Mn] | daily maximum | ≤ .05 lb/d | all year | 001 |
| Aluminum, total [as Al] | monthly average | ≤ 3.3 mg/L | all year | 001 |
| Aluminum, total [as Al] | daily maximum | ≤ 6.6 mg/L | all year | 001 |
| Aluminum, total [as Al] | monthly average | ≤ .08 lb/d | all year | 001 |
| Aluminum, total [as Al] | daily maximum | ≤ .16 lb/d | all year | 001 |
| Dichlorobromomethane | monthly average | report only (mg/L) | all year | 001 |
| Chloroform | monthly average | report only (mg/L) | all year | 001 |
| Chlorodibromomethane | monthly average | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 001 |
| Chlorine, total residual | instantaneous maximum | ≤ 1 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 002 |
| Chlorine, total residual | instantaneous maximum | ≤ 1 mg/L | all year | 002 |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
Same industry: the 214 Water Supply permits in Pennsylvania.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/PA0052949 · MCP: https://passage-data.com/mcp