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Town of Trenton

Sewage treatment plant, Trenton, North Carolina. NPDES permit NC0021342, in force until May 31, 2029. Last 12 months: over a limit 14 times (last August 2026), 130 required values missing, 7 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: form M monthly (25 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
8 values over a limit, 64 required values missing, 11 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 14 values over a limit
Period endingParameterReportedLimitOver by
January 2026BOD, 5-day, 20 deg. C, 30-day average22.5 mg/L≤ 15 mg/L50%
January 2026BOD, 5-day, 20 deg. C, 7-day average28.5 mg/L≤ 22.5 mg/L27%
January 2026Nitrogen, ammonia total [as N], 30-day average25.125 mg/L≤ 9.2 mg/L173%
January 2026Nitrogen, ammonia total [as N], 7-day average27.8 mg/L≤ 27.6 mg/L1%
January 2026Phosphorus, total [as P], 30-day average3.6462 mg/L≤ 1 mg/L265%
February 2026BOD, 5-day, 20 deg. C, 30-day average23.25 mg/L≤ 15 mg/L55%
February 2026BOD, 5-day, 20 deg. C, 7-day average36 mg/L≤ 22.5 mg/L60%
February 2026Coliform, fecal MF, MFC broth, 44.5 C, weekly geometric mean1646.3292 #/100mL≤ 400 #/100mL312%
February 2026Nitrogen, ammonia total [as N], 30-day average14.3875 mg/L≤ 9.2 mg/L56%
February 2026Nitrogen, ammonia total [as N], 7-day average36 mg/L≤ 27.6 mg/L30%
February 2026Phosphorus, total [as P], 30-day average1.9075 mg/L≤ 1 mg/L91%
May 2026Phosphorus, total [as P], 30-day average1.5185 mg/L≤ 1 mg/L52%
May 2026Phosphorus, total [as P], 30-day average1.5185 mg/L≤ 1 mg/L52%
August 2026Phosphorus, total [as P], 30-day average1.3187 mg/L≤ 1 mg/L32%

Limits in force (31)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Temperature, water deg. centigradedaily maximumreport only (deg C)Jun–Sep
Temperature, water deg. centigradedaily maximumreport only (deg C)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Temperature, water deg. centigradedaily maximumreport only (deg C)Jun–Sep
Oxygen, dissolved [DO]daily minimum≥ 5 mg/Lall year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Jun–Sep
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Jun–Sep
BOD, 5-day, 20 deg. C7-day average≤ 22.5 mg/Lall year
BOD, 5-day, 20 deg. C30-day average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (lb/mo)all year
Nitrogen, ammonia total [as N]7-day average≤ 13.8 mg/LApr–Oct
Nitrogen, ammonia total [as N]7-day average≤ 27.6 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]30-day average≤ 4.6 mg/LApr–Oct
Nitrogen, ammonia total [as N]30-day average≤ 9.2 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]30-day average≤ 1 mg/Lall year
Coliform, fecal MF, MFC broth, 44.5 Cweekly geometric mean≤ 400 #/100mLall year
Coliform, fecal MF, MFC broth, 44.5 Cmonthly geometric mean≤ 200 #/100mLall year
Flow, in conduit or thru treatment plant30-day average≤ .14 MGDall year
Flow, totaldaily maximumreport only (Mgal/mo)all year

How strict are these limits?

Cited limits by parameter: North Carolina's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NC0021342 · MCP: https://passage-data.com/mcp