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Sewage treatment plant, major discharger, Burlington, North Carolina. NPDES permit NC0023876 expired Jun 30, 2019; its limits still apply. Last 12 months: over a limit 7 times (last May 2026), 20 required values missing, 11 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| April 2026 | BOD, 5-day, 20 deg. C, 30-day average | 9.9428 mg/L | ≤ 9 mg/L | 10% |
| April 2026 | BOD, 5-day, 20 deg. C, 7-day average | 15.38 mg/L | ≤ 13.5 mg/L | 14% |
| April 2026 | Nitrogen, ammonia total [as N], 30-day average | 5.1714 mg/L | ≤ 3 mg/L | 72% |
| April 2026 | Nitrogen, ammonia total [as N], 7-day average | 11.86 mg/L | ≤ 9 mg/L | 32% |
| May 2026 | BOD, 5-day, 20 deg. C, 30-day average | 10.625 mg/L | ≤ 9 mg/L | 18% |
| May 2026 | Nitrogen, ammonia total [as N], 30-day average | 5.3515 mg/L | ≤ 3 mg/L | 78% |
| May 2026 | Nitrogen, ammonia total [as N], 7-day average | 9.32 mg/L | ≤ 9 mg/L | 4% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year |
| Conductivity | daily maximum | report only (umho/cm) | all year |
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | all year |
| BOD, 5-day, 20 deg. C | 7-day average | ≤ 27 mg/L | Jan, Feb, Mar, Nov, Dec |
| BOD, 5-day, 20 deg. C | 7-day average | ≤ 13.5 mg/L | Apr–Oct |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 18 mg/L | Jan, Feb, Mar, Nov, Dec |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 9 mg/L | Apr–Oct |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | all year |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | report only (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] | 7-day average | ≤ 9 mg/L | Apr–Oct |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 18 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3 mg/L | Apr–Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6 mg/L | Jan, Feb, Mar, Nov, Dec |
| 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 |
| Phosphorus, total [as P] | daily maximum | report only (lb/mo) | all year |
| Coliform, fecal MF, MFC broth, 44.5 C | weekly geometric mean | ≤ 400 #/100mL | all year |
| Coliform, fecal MF, MFC broth, 44.5 C | monthly geometric mean | ≤ 200 #/100mL | all year |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 12 MGD | all year |
| Chlorine, total residual | daily maximum | ≤ 19 ug/L | all year |
Cited limits by parameter: North Carolina's rules and the federal ones.
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