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Sewerage Systems, Knightdale, North Carolina. NPDES permit NC0065706, in force until Feb 29, 2028. Last 12 months: over a limit 6 times (last July 2026), 10 required values missing, 10 of 10 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| January 2026 | Coliform, fecal MF, MFC broth, 44.5 C, daily maximum | 2420 #/100mL | ≤ 400 #/100mL | 505% |
| May 2026 | BOD, 5-day, 20 deg. C, 30-day average | 18.75 mg/L | ≤ 10 mg/L | 88% |
| May 2026 | BOD, 5-day, 20 deg. C, daily maximum | 24 mg/L | ≤ 15 mg/L | 60% |
| May 2026 | Nitrogen, ammonia total [as N], 30-day average | 33.3 mg/L | ≤ 4 mg/L | 733% |
| May 2026 | Nitrogen, ammonia total [as N], daily maximum | 39.6 mg/L | ≤ 20 mg/L | 98% |
| July 2026 | Coliform, fecal MF, MFC broth, 44.5 C, daily maximum | 2420 #/100mL | ≤ 400 #/100mL | 505% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year |
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | all year |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 20 mg/L | Jan, Feb, Mar, Nov, Dec |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 10 mg/L | Apr–Oct |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 35 mg/L | Jan, Feb, Mar, Nov, Dec |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 15 mg/L | Apr–Oct |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | daily maximum | report only (lb/mo) | all year |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 8 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4 mg/L | Apr–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 35 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 20 mg/L | Apr–Oct |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Coliform, fecal MF, MFC broth, 44.5 C | monthly geometric mean | ≤ 200 #/100mL | all year |
| Coliform, fecal MF, MFC broth, 44.5 C | daily maximum | ≤ 400 #/100mL | all year |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .0575 MGD | all year |
| Chlorine, total residual | daily maximum | ≤ 28 ug/L | all year |
| Flow, total | daily maximum | report only (Mgal/mo) | all year |
Cited limits by parameter: North Carolina's rules and the federal ones.
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