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Sewerage Systems, Benton, Pennsylvania. NPDES permit PA0032115, in force until Apr 30, 2030. Last 12 months: over a limit once (last November 2025), 11 required values missing, 2 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Chlorine, total residual, monthly average | .462 mg/L | ≤ .4 mg/L | 16% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 7 mg/L | May–Sep |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 7 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| pH | instantaneous minimum | ≥ 6 SU | May–Sep |
| pH | instantaneous minimum | ≥ 6 SU | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| pH | instantaneous maximum | ≤ 9 SU | May–Sep |
| pH | instantaneous maximum | ≤ 9 SU | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Nitrogen, total [as N] | annual average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 15 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5 mg/L | May–Sep |
| Nitrogen, Kjeldahl, total [as N] | annual average | report only (mg/L) | all year |
| Nitrite + Nitrate total [as N] | annual average | report only (mg/L) | all year |
| Phosphorus, total [as P] | annual 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 | ≤ .4 mg/L | May–Sep |
| Chlorine, total residual | monthly average | ≤ .4 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Chlorine, total residual | instantaneous maximum | ≤ .8 mg/L | May–Sep |
| Chlorine, total residual | instantaneous maximum | ≤ .8 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| E. coli | instantaneous maximum | 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 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Chlorine, total residual, monthly average | 0.3 mg/L (Jan, Feb, Mar, Apr, Oct, Nov, Dec) | tighter | 0.31 mg/L (7 values) | 1.03× |
| Chlorine, total residual, monthly average | 0.3 mg/L (May–Sep) | tighter | — | — |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
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