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Town of Maysville

Sewage treatment plant, Maysville, North Carolina. NPDES permit NC0021482, in force until Jul 31, 2027. Last 12 months: over a limit 18 times (last August 2026), 6 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: form M monthly (20 values)
Renewal application due
Feb 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
15 values over a limit, 9 required values missing, 8 of 12 reports late

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

All 18 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], 30-day average3.55 mg/L≤ 2.3 mg/L54%
February 2026Nitrogen, ammonia total [as N], 30-day average10.225 mg/L≤ 8.6 mg/L19%
March 2026BOD, 5-day, 20 deg. C, 30-day average41.75 mg/L≤ 30 mg/L39%
March 2026BOD, 5-day, 20 deg. C, 7-day average81 mg/L≤ 45 mg/L80%
March 2026Nitrogen, ammonia total [as N], 30-day average8.925 mg/L≤ 8.6 mg/L4%
April 2026BOD, 5-day, 20 deg. C, 7-day average80 mg/L≤ 45 mg/L78%
April 2026Nitrogen, ammonia total [as N], 30-day average5.96 mg/L≤ 2.3 mg/L159%
April 2026Nitrogen, ammonia total [as N], 7-day average8.8 mg/L≤ 6.9 mg/L28%
May 2026Nitrogen, ammonia total [as N], 30-day average6.425 mg/L≤ 2.3 mg/L179%
May 2026Nitrogen, ammonia total [as N], 7-day average16.1 mg/L≤ 6.9 mg/L133%
June 2026Coliform, fecal MF, MFC broth, 44.5 C, weekly geometric mean690 #/100mL≤ 400 #/100mL73%
June 2026Flow, in conduit or thru treatment plant, 30-day average208.9008 MGD≤ .18 MGD—
June 2026Nitrogen, ammonia total [as N], 30-day average6.66 mg/L≤ 2.3 mg/L190%
June 2026Nitrogen, ammonia total [as N], 7-day average9.9 mg/L≤ 6.9 mg/L43%
July 2026Nitrogen, ammonia total [as N], 30-day average6.375 mg/L≤ 2.3 mg/L177%
July 2026Nitrogen, ammonia total [as N], 7-day average10.1 mg/L≤ 6.9 mg/L46%
August 2026Nitrogen, ammonia total [as N], 30-day average6.2 mg/L≤ 2.3 mg/L170%
August 2026Nitrogen, ammonia total [as N], 7-day average10 mg/L≤ 6.9 mg/L45%

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
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LApr–Oct
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. 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 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≤ 6.9 mg/LApr–Oct
Nitrogen, ammonia total [as N]7-day average≤ 25.8 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]30-day average≤ 2.3 mg/LApr–Oct
Nitrogen, ammonia total [as N]30-day average≤ 8.6 mg/LJan, Feb, Mar, Nov, Dec
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≤ .18 MGDall year
Chlorine, total residualdaily maximum≤ 28 ug/Lall year

How strict are these limits?

Cited limits by parameter: North Carolina's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NC0021482 · MCP: https://passage-data.com/mcp