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City of Salisbury

Sewage treatment plant, major discharger, Salisbury, North Carolina. NPDES permit NC0023884, in force until Jun 30, 2027. Last 12 months: over a limit 8 times (last July 2026), 20 required values missing, 7 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (19 values)
Renewal application due
Jan 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 34 required values missing, 5 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Coliform, fecal MF, MFC broth, 44.5 C, weekly geometric mean2320.7281 #/100mL≤ 400 #/100mL480%
November 2025Coliform, fecal MF, MFC broth, 44.5 C, weekly geometric mean596.4781 #/100mL≤ 400 #/100mL49%
January 2026Solids, total suspended, 7-day average83.8 mg/L≤ 45 mg/L86%
March 2026Solids, total suspended, 30-day average43.5256 mg/L≤ 30 mg/L45%
March 2026Solids, total suspended, 7-day average87.3416 mg/L≤ 45 mg/L94%
May 2026Coliform, fecal MF, MFC broth, 44.5 C, weekly geometric mean1162.7147 #/100mL≤ 400 #/100mL191%
June 2026Coliform, fecal MF, MFC broth, 44.5 C, weekly geometric mean461.0554 #/100mL≤ 400 #/100mL15%
July 2026Chlorine, total residual, daily maximum50 ug/L≤ 28 ug/L79%

Limits in force (25)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Conductivitydaily maximumreport only (umho/cm)all year
Oxygen, dissolved [DO]daily minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 22.5 mg/LApr–Oct
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. C30-day average≤ 15 mg/LApr–Oct
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
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, ammonia total [as N]7-day average≤ 18 mg/LApr–Oct
Nitrogen, ammonia total [as N]7-day average≤ 35 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]30-day average≤ 6 mg/LApr–Oct
Nitrogen, ammonia total [as N]30-day average≤ 12 mg/LJan, Feb, Mar, Nov, Dec
Phosphorus, total [as P]daily maximumreport only (mg/L)all 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≤ 12.5 MGDall year
Chlorine, total residualdaily maximum≤ 28 ug/Lall year
BOD, 5-day, percent removaldaily maximumreport only (%)all year
Solids, suspended percent removaldaily maximumreport only (%)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/NC0023884 · MCP: https://passage-data.com/mcp