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Sewage treatment plant, major discharger, Hillsborough, North Carolina. NPDES permit NC0026433, in force until Jan 31, 2030. Last 12 months: over a limit once (last February 2026), 56 required values missing, 10 of 32 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| February 2026 | BOD, 5-day, 20 deg. C, 7-day average | 10.1 mg/L | ≤ 7.5 mg/L | 35% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Conductivity | daily maximum | report only (umho/cm) | all year | 001 |
| Conductivity | daily maximum | report only (umho/cm) | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 001 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 001 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | 7-day average | ≤ 7.5 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 5 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| pH | daily maximum | report only (SU) | all year | 001 |
| pH | daily maximum | report only (SU) | all year | 001 |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (lb/mo) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 3 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | 90-day average | ≤ 2 mg/L | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (lb/mo) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Coliform, fecal MF, MFC broth, 44.5 C | weekly geometric mean | ≤ 400 #/100mL | all year | 001 |
| Coliform, fecal MF, MFC broth, 44.5 C | monthly geometric mean | ≤ 200 #/100mL | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 3 MGD | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 19 ug/L | all year | 001 |
| Flow, total | daily maximum | report only (Mgal/mo) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 0D2 |
| Conductivity | daily maximum | report only (umho/cm) | all year | 0D2 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 0D2 |
| pH | daily maximum | report only (SU) | all year | 0D2 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 0D2 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 0D2 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 0D2 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 0D2 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 0D2 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 0U1 |
| Conductivity | daily maximum | report only (umho/cm) | all year | 0U1 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 0U1 |
| pH | daily maximum | report only (SU) | all year | 0U1 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 0U1 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 0U1 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 0U1 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 0U1 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 0U1 |
Cited limits by parameter: North Carolina's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
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