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Town of Aurora

Sewage treatment plant, Aurora, North Carolina. NPDES permit NC0021521, in force until Feb 28, 2030. Last 12 months: over a limit 6 times (last July 2026), 41 required values missing, 3 of 10 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: form M monthly (19 values)
Last report on file
July 2026
Oct 2024 – Sep 2025
10 values over a limit, 45 required values missing, 7 of 12 reports late

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

Period endingParameterReportedLimitOver by
January 2026pH, daily minimum6.77 SU≥ 6.8 SU—
May 2026Enterococci, monthly geometric mean101.2909 CFU/100mL≤ 35 CFU/100mL189%
May 2026Enterococci, weekly geometric mean2419.6 CFU/100mL≤ 276 CFU/100mL777%
June 2026pH, daily minimum6.7 SU≥ 6.8 SU—
July 2026Chlorine, total residual, daily maximum50 ug/L≤ 13 ug/L285%
July 2026Enterococci, weekly geometric mean2419.6 CFU/100mL≤ 276 CFU/100mL777%

Limits in force (19)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Oxygen, dissolved [DO]daily minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year
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≤ 135 mg/Lall year
Solids, total suspended30-day average≤ 90 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]daily maximumreport only (mg/L)all year
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]daily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plant30-day average≤ .12 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/NC0021521 · MCP: https://passage-data.com/mcp