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Sewage treatment plant, major discharger, Mount Pleasant, Pennsylvania. NPDES permit PA0021148, in force until Jun 30, 2030. Last 12 months: over a limit 8 times (last June 2026), 63 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 5.62 mg/L | ≤ 3.2 mg/L | 76% |
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 55.1 | ≤ 40 lb/d | 38% |
| January 2026 | Nitrogen, ammonia total [as N], weekly average | 6.55 mg/L | ≤ 4.8 mg/L | 36% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | < 3.45 mg/L | ≤ 3.2 mg/L | 8% |
| February 2026 | Nitrogen, ammonia total [as N], weekly average | 6.88 mg/L | ≤ 4.8 mg/L | 43% |
| March 2026 | Solids, total suspended, monthly average | < 369.3 | ≤ 310 lb/d | 19% |
| March 2026 | Solids, total suspended, weekly average | < 1149.2 | ≤ 475 lb/d | 142% |
| June 2026 | Chlorine, total residual, monthly average | .02 mg/L | ≤ .011 mg/L | 82% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 38 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 310 lb/d | all year |
| Solids, total suspended | weekly average | ≤ 475 lb/d | all year |
| Solids, total suspended | daily maximum | report only (mg/L) | all year |
| Solids, total suspended | monthly average | report only (lb/d) | all year |
| Solids, total suspended | daily maximum | report only (lb/d) | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.91 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.2 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3.82 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.8 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 23.9 lb/d | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 40 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year |
| Copper, total [as Cu] | monthly average | report only (lb/d) | all year |
| Copper, total [as Cu] | daily maximum | report only (lb/d) | all year |
| Iron, dissolved [as Fe] | monthly average | report only (ug/L) | all year |
| Iron, dissolved [as Fe] | daily maximum | report only (ug/L) | all year |
| Iron, dissolved [as Fe] | monthly average | report only (lb/d) | all year |
| Iron, dissolved [as Fe] | daily maximum | report only (lb/d) | all year |
| Zinc, total [as Zn] | monthly average | report only (ug/L) | all year |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year |
| Zinc, total [as Zn] | monthly average | report only (lb/d) | all year |
| Zinc, total [as Zn] | daily maximum | report only (lb/d) | all year |
| Dichlorobromomethane | monthly average | report only (ug/L) | all year |
| Dichlorobromomethane | daily maximum | report only (ug/L) | all year |
| Dichlorobromomethane | monthly average | report only (lb/d) | all year |
| Dichlorobromomethane | daily maximum | report only (lb/d) | all year |
| Chloroform | monthly average | report only (ug/L) | all year |
| Chloroform | daily maximum | report only (ug/L) | all year |
| Chloroform | monthly average | report only (lb/d) | all year |
| Chloroform | daily maximum | report only (lb/d) | all year |
| Benzo[k]fluoranthene | monthly average | report only (ug/L) | all year |
| Benzo[k]fluoranthene | daily maximum | report only (ug/L) | all year |
| Benzo[k]fluoranthene | monthly average | report only (lb/d) | all year |
| Benzo[k]fluoranthene | daily maximum | report only (lb/d) | all year |
| Indeno[1,2,3-cd]pyrene | monthly average | report only (ug/L) | all year |
| Indeno[1,2,3-cd]pyrene | daily maximum | report only (ug/L) | all year |
| Indeno[1,2,3-cd]pyrene | monthly average | report only (lb/d) | all year |
| Indeno[1,2,3-cd]pyrene | daily maximum | report only (lb/d) | all year |
| Di[2-ethylhexyl] phthalate [DEHP] | monthly average | report only (ug/L) | all year |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | report only (ug/L) | all year |
| Di[2-ethylhexyl] phthalate [DEHP] | monthly average | report only (lb/d) | all year |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | report only (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 | ≤ .011 mg/L | all year |
| Chlorine, total residual | instantaneous maximum | ≤ .035 mg/L | all year |
| E. coli | instantaneous maximum | report only (#/100mL) | all year |
| Cyanide, free available | monthly average | report only (ug/L) | all year |
| Cyanide, free available | daily maximum | report only (ug/L) | all year |
| Cyanide, free available | monthly average | report only (lb/d) | all year |
| Cyanide, free available | daily maximum | report only (lb/d) | all year |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | 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 | ≤ 10 mg/L | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 17 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 15 mg/L | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 27 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 125 lb/d | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 220 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 185 lb/d | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 335 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Copper, total [as Cu], daily maximum | 0.18 lb/d | new | 0.21 lb/d (9 values) | 1.17× |
| Copper, total [as Cu], daily maximum | 14.2 ug/L | new | 15 ug/L (9 values) | 1.06× |
| Copper, total [as Cu], monthly average | 0.12 lb/d | new | 0.14 lb/d (9 values) | 1.17× |
| Copper, total [as Cu], monthly average | 9.46 ug/L | new | 12 ug/L (9 values) | 1.27× |
| Benzo[k]fluoranthene, daily maximum | 0.0002 lb/d | new | 0.0132 lb/d (9 values, 9 below detection) | — |
| Benzo[k]fluoranthene, daily maximum | 0.018 ug/L | new | 1 ug/L (9 values, 9 below detection) | — |
| Benzo[k]fluoranthene, monthly average | 0.0001 lb/d | new | 0.0104 lb/d (9 values, 9 below detection) | — |
| Benzo[k]fluoranthene, monthly average | 0.012 ug/L | new | 0.998 ug/L (9 values, 9 below detection) | — |
| Chloroform, daily maximum | 0.11 lb/d | new | 0.03 lb/d (9 values) | 0.273× |
| Chloroform, daily maximum | 9.02 ug/L | new | 3.62 ug/L (9 values) | 0.401× |
| Chloroform, monthly average | 5.78 ug/L | new | 2.75 ug/L (9 values, 1 below detection) | 0.476× |
| Chloroform, monthly average | 0.072 lb/d | new | 0.026 lb/d (9 values, 1 below detection) | 0.361× |
| Cyanide, free available, daily maximum | 0.079 lb/d | new | 0.012 lb/d (9 values, 6 below detection) | — |
| Cyanide, free available, daily maximum | 6.33 ug/L | new | 0.5 ug/L (9 values, 6 below detection) | — |
| Cyanide, free available, monthly average | 4.06 ug/L | new | 0.5 ug/L (9 values, 9 below detection) | — |
| Cyanide, free available, monthly average | 0.051 lb/d | new | 0.008 lb/d (9 values, 9 below detection) | — |
| Di[2-ethylhexyl] phthalate [DEHP], daily maximum | 0.58 ug/L | new | 2.99 ug/L (9 values, 8 below detection) | — |
| Di[2-ethylhexyl] phthalate [DEHP], daily maximum | 0.007 lb/d | new | 0.026 lb/d (9 values, 8 below detection) | — |
| Di[2-ethylhexyl] phthalate [DEHP], monthly average | 0.37 ug/L | new | 2.99 ug/L (9 values, 9 below detection) | — |
| Di[2-ethylhexyl] phthalate [DEHP], monthly average | 0.005 lb/d | new | 0.026 lb/d (9 values, 9 below detection) | — |
| Dichlorobromomethane, daily maximum | 9.02 ug/L | new | 1.1 ug/L (9 values, 2 below detection) | 0.122× |
| Dichlorobromomethane, daily maximum | 0.021 lb/d | new | 0.008 lb/d (9 values, 3 below detection) | 0.381× |
| Dichlorobromomethane, monthly average | 0.014 lb/d | new | 0.006 lb/d (9 values, 6 below detection) | — |
| Dichlorobromomethane, monthly average | 5.78 ug/L | new | 0.66 ug/L (9 values, 6 below detection) | — |
| Indeno[1,2,3-cd]pyrene, daily maximum | 0.00002 lb/d | new | 0.00778 lb/d (9 values, 9 below detection) | — |
| Indeno[1,2,3-cd]pyrene, daily maximum | 0.002 ug/L | new | 0.99 ug/L (9 values, 9 below detection) | — |
| Indeno[1,2,3-cd]pyrene, monthly average | 0.00001 lb/d | new | 0.00778 lb/d (9 values, 9 below detection) | — |
| Indeno[1,2,3-cd]pyrene, monthly average | 0.001 ug/L | new | 0.99 ug/L (9 values, 9 below detection) | — |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
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