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Town of Hertford

Sewage treatment plant, Hertford, North Carolina. NPDES permit NC0021849, in force until Dec 31, 2027. Last 12 months: over a limit 7 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: form M monthly (20 values)
Renewal application due
Jul 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
5 values over a limit, 7 required values missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
December 2025Solids, total suspended, 30-day average38.0357 mg/L≤ 30 mg/L27%
December 2025Solids, total suspended, 7-day average108.4 mg/L≤ 45 mg/L141%
December 2025pH, daily minimum6.78 SU≥ 6.8 SU—
January 2026Enterococci, weekly geometric mean814.7716 CFU/100mL≤ 276 CFU/100mL195%
February 2026Enterococci, monthly geometric mean87.859 CFU/100mL≤ 35 CFU/100mL151%
February 2026Enterococci, weekly geometric mean651.5358 CFU/100mL≤ 276 CFU/100mL136%
July 2026pH, daily minimum6.74 SU≥ 6.8 SU—

Limits in force (28)

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)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)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≤ 45 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. C7-day average≤ 22.5 mg/LApr–Oct
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. C30-day average≤ 15 mg/LApr–Oct
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
pHdaily minimum≥ 6.8 SUall year
pHdaily maximum≤ 8.5 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, ammonia total [as N]7-day average≤ 24 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 12 mg/LApr–Oct
Nitrogen, ammonia total [as N]30-day average≤ 8 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]30-day average≤ 4 mg/LApr–Oct
Flow, in conduit or thru treatment plant30-day average≤ .7 MGDall year
Chlorine, total residualdaily maximum≤ 13 ug/Lall year
Enterococciweekly geometric mean≤ 276 CFU/100mLall year
Enterococcimonthly geometric mean≤ 35 CFU/100mLall 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/NC0021849 · MCP: https://passage-data.com/mcp