Passage Data · Check a report · Use it from your AI
Sewage treatment plant, major discharger, Benson, North Carolina. NPDES permit NC0020389 expired Apr 30, 2026; its limits still apply. Last 12 months: over a limit 2 times (last October 2025), 10 required values missing, 11 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Nitrogen, ammonia total [as N], 30-day average | 1.5278 mg/L | ≤ 1 mg/L | 53% |
| October 2025 | Nitrogen, ammonia total [as N], 7-day average | 5.672 mg/L | ≤ 3 mg/L | 89% |
| 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 | ≤ 7.5 mg/L | Apr–Oct |
| BOD, 5-day, 20 deg. C | 7-day average | ≤ 15 mg/L | Jan, Feb, Mar, Nov, Dec |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 5 mg/L | Apr–Oct |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 10 mg/L | Jan, Feb, Mar, Nov, Dec |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | Apr–Oct |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | Jan, Feb, Mar, Nov, Dec |
| 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 | ≤ 3 mg/L | Apr–Oct |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 6 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | Apr–Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2 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] | 90-day average | ≤ 2 mg/L | all year |
| Nickel, total [as Ni] | 30-day average | ≤ 62.1 ug/L | Jan |
| Nickel, total [as Ni] | daily maximum | ≤ 558.9 ug/L | Jan |
| 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 | ≤ 1.9 MGD | all year |
| Chlorine, total residual | daily maximum | ≤ 17 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.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/NC0020389 · MCP: https://passage-data.com/mcp