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Elementary And Secondary Schools, Guys Mills, Pennsylvania. NPDES permit PA0035505, in force until Nov 30, 2029. Last 12 months: over a limit 4 times (last June 2026), 17 required values missing, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Coliform, fecal general, geometric mean | 2420 #/100mL | ≤ 2000 #/100mL | 21% |
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 6.17 mg/L | ≤ 4.5 mg/L | 37% |
| February 2026 | Oxygen, dissolved [DO], daily minimum | 4.1 mg/L | ≥ 5 mg/L | 18% |
| June 2026 | Oxygen, dissolved [DO], daily minimum | 4.3 mg/L | ≥ 5 mg/L | 14% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | instantaneous maximum | ≤ 60 mg/L | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.5 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | instantaneous maximum | ≤ 9 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | instantaneous maximum | ≤ 3 mg/L | May–Oct |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | 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 | ≤ 1.6 mg/L | all year |
| E. coli | annual average | report only (#/100mL) | all year |
| Coliform, fecal general | geometric mean | ≤ 200 #/100mL | May–Sep |
| Coliform, fecal general | geometric mean | ≤ 2000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Coliform, fecal general | instantaneous maximum | ≤ 1000 #/100mL | May–Sep |
| Coliform, fecal general | instantaneous maximum | ≤ 10000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 20 mg/L | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | instantaneous maximum | ≤ 40 mg/L | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | instantaneous maximum | ≤ 50 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Chlorine, total residual, instantaneous maximum | 0.7 mg/L | tighter | 0.76 mg/L (9 values) | 1.09× |
| Chlorine, total residual, monthly average | 0.2 mg/L | tighter | 0.3 mg/L (9 values) | 1.5× |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
Same industry: the 99 Educational Services permits in Pennsylvania.
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