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Stanly County

Sewage treatment plant, Oakboro, North Carolina. NPDES permit NC0043532, in force until Jan 31, 2029. Last 12 months: over a limit 25 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 32 days after each period: form M monthly (18 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
15 values over a limit, 0 required values missing, 1 of 12 reports late

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

All 25 values over a limit
Period endingParameterReportedLimitOver by
December 2025BOD, 5-day, 20 deg. C, 30-day average12.5066 mg/L≤ 10 mg/L25%
December 2025BOD, 5-day, 20 deg. C, 7-day average29.8333 mg/L≤ 15 mg/L99%
December 2025Solids, total suspended, 7-day average81.7666 mg/L≤ 45 mg/L82%
January 2026BOD, 5-day, 20 deg. C, 30-day average12.8333 mg/L≤ 10 mg/L28%
January 2026BOD, 5-day, 20 deg. C, 7-day average30.6666 mg/L≤ 15 mg/L104%
January 2026Nitrogen, ammonia total [as N], 30-day average4.3166 mg/L≤ 4 mg/L8%
February 2026Nitrogen, ammonia total [as N], 30-day average12.7475 mg/L≤ 4 mg/L219%
February 2026Nitrogen, ammonia total [as N], 7-day average49.2333 mg/L≤ 12 mg/L310%
March 2026BOD, 5-day, 20 deg. C, 30-day average19.6153 mg/L≤ 10 mg/L96%
March 2026BOD, 5-day, 20 deg. C, 7-day average34 mg/L≤ 15 mg/L127%
March 2026Nitrogen, ammonia total [as N], 30-day average13.6153 mg/L≤ 4 mg/L240%
March 2026Nitrogen, ammonia total [as N], 7-day average16.3333 mg/L≤ 12 mg/L36%
April 2026BOD, 5-day, 20 deg. C, 30-day average14.65 mg/L≤ 10 mg/L47%
April 2026BOD, 5-day, 20 deg. C, 7-day average17.2 mg/L≤ 15 mg/L15%
April 2026Nitrogen, ammonia total [as N], 30-day average31.1428 mg/L≤ 4 mg/L679%
April 2026Nitrogen, ammonia total [as N], 7-day average43.3333 mg/L≤ 12 mg/L261%
May 2026Nitrogen, ammonia total [as N], 30-day average19.025 mg/L≤ 4 mg/L376%
May 2026Nitrogen, ammonia total [as N], 7-day average30.6666 mg/L≤ 12 mg/L156%
June 2026BOD, 5-day, 20 deg. C, 7-day average19 mg/L≤ 15 mg/L27%
June 2026Nitrogen, ammonia total [as N], 30-day average6.1315 mg/L≤ 4 mg/L53%
June 2026Nitrogen, ammonia total [as N], 7-day average15.4666 mg/L≤ 12 mg/L29%
July 2026BOD, 5-day, 20 deg. C, 30-day average11.7571 mg/L≤ 10 mg/L18%
July 2026BOD, 5-day, 20 deg. C, 7-day average15.6 mg/L≤ 15 mg/L4%
August 2026BOD, 5-day, 20 deg. C, 30-day average11.1666 mg/L≤ 10 mg/L12%
August 2026BOD, 5-day, 20 deg. C, 7-day average16.5 mg/L≤ 15 mg/L10%

Limits in force (18)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Conductivitydaily maximumreport only (umho/cm)all year
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. C30-day average≤ 10 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, ammonia total [as N]7-day average≤ 12 mg/Lall year
Nitrogen, ammonia total [as N]30-day average≤ 4 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≤ 1.2 MGDall year
Chlorine, total residualdaily maximum≤ 28 ug/Lall 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/NC0043532 · MCP: https://passage-data.com/mcp