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Mill Ridge Property Owners Association

Sewerage Systems, Banner Elk, North Carolina. NPDES permit NC0030473, in force until Sep 30, 2027. Last 12 months: over a limit 2 times (last March 2026), 3 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: form M monthly (18 values)
Renewal application due
Apr 3, 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, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Flow, in conduit or thru treatment plant, 30-day average.0616 MGD≤ .052 MGD18%
March 2026Flow, in conduit or thru treatment plant, 30-day average.0524 MGD≤ .052 MGD1%

Limits in force (22)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Turbiditydaily maximumreport only (NTU)all year
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. C30-day average≤ 6 mg/LApr–Oct
BOD, 5-day, 20 deg. C30-day average≤ 10 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 9 mg/LApr–Oct
BOD, 5-day, 20 deg. Cdaily maximum≤ 15 mg/LJan, Feb, Mar, Nov, Dec
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 10 mg/Lall year
Solids, total suspendeddaily maximum≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]30-day average≤ 3.9 mg/LApr–Oct
Nitrogen, ammonia total [as N]30-day average≤ 4 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 19.5 mg/LApr–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 20 mg/LJan, Feb, Mar, Nov, Dec
Coliform, fecal MF, MFC broth, 44.5 Cmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal MF, MFC broth, 44.5 Cdaily maximum≤ 400 #/100mLall year
Flow, in conduit or thru treatment plant30-day average≤ .052 MGDall 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/NC0030473 · MCP: https://passage-data.com/mcp