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Water Supply, Coatesville, Pennsylvania. NPDES permit PA0012416, in force until May 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year |
| pH | instantaneous minimum | ≥ 6 SU | all year |
| pH | instantaneous maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 40 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 23.4 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 46.7 lb/d | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year |
| Nitrogen, total [as N] | monthly average | ≤ .24 mg/L | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly average | ≤ .28 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .1 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .117 lb/d | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | monthly average | ≤ .1 mg/L | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | ≤ .117 lb/d | all year |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year |
| Iron, total [as Fe] | monthly average | ≤ 2 mg/L | all year |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year |
| Iron, total [as Fe] | monthly average | ≤ 2.3 lb/d | all year |
| Iron, total [as Fe] | daily maximum | ≤ 4.7 lb/d | all year |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year |
| Manganese, total [as Mn] | monthly average | ≤ 1.2 lb/d | all year |
| Manganese, total [as Mn] | daily maximum | ≤ 2.4 lb/d | all year |
| Thallium, total [as Tl] | daily maximum | report only (mg/L) | all year |
| Aluminum, total [as Al] | monthly average | ≤ .8 mg/L | all year |
| Aluminum, total [as Al] | daily maximum | ≤ 1.6 mg/L | all year |
| Aluminum, total [as Al] | monthly average | ≤ .93 lb/d | all year |
| Aluminum, total [as Al] | daily maximum | ≤ 1.87 lb/d | all year |
| Dichlorobromomethane | monthly average | ≤ .006 mg/L | all year |
| Dichlorobromomethane | daily maximum | ≤ .009 mg/L | all year |
| Dichlorobromomethane | monthly average | ≤ .007 lb/d | all year |
| Dichlorobromomethane | daily maximum | ≤ .011 lb/d | all year |
| Chloroform | monthly average | ≤ .035 mg/L | all year |
| Chloroform | daily maximum | ≤ .055 mg/L | all year |
| Chloroform | monthly average | ≤ .041 lb/d | all year |
| Chloroform | daily maximum | ≤ .064 lb/d | all year |
| Chlorodibromomethane | monthly average | ≤ .005 mg/L | all year |
| Chlorodibromomethane | daily maximum | ≤ .008 mg/L | all year |
| Chlorodibromomethane | monthly average | ≤ .006 lb/d | all year |
| Chlorodibromomethane | daily maximum | ≤ .009 lb/d | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year |
| Chlorine, total residual | instantaneous maximum | ≤ 1 mg/L | all year |
| Cyanide, free available | daily maximum | report only (mg/L) | all year |
| Solids, total dissolved | monthly average | ≤ 1000 mg/L | all year |
| Solids, total dissolved | daily maximum | ≤ 2000 mg/L | all year |
| Solids, total dissolved | monthly average | ≤ 1168 lb/d | all year |
| Solids, total dissolved | daily maximum | ≤ 2335 lb/d | all year |
| Coliform, fecal general | geometric mean | ≤ 2 #/100mL | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 11.7 lb/d | all year |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
Same industry: the 214 Water Supply permits in Pennsylvania.
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