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Laurinburg-Maxton Airport Commission

Sewage treatment plant, major discharger, Maxton, North Carolina. NPDES permit NC0044725, in force until Jul 31, 2028. Last 12 months: over a limit 5 times (last March 2026), 33 required values missing, 6 of 10 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: form M monthly (33 values)
Renewal application due
Feb 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
July 2026
Oct 2024 – Sep 2025
10 values over a limit, 138 required values missing, 10 of 12 reports late

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

Period endingParameterReportedLimitOver by
January 2026BOD, 5-day, 20 deg. C, 7-day average23 mg/L≤ 22.5 mg/L2%
March 2026BOD, 5-day, 20 deg. C, 30-day average17.8888 mg/L≤ 15 mg/L19%
March 2026Nitrogen, ammonia total [as N], 30-day average13.0111 mg/L≤ 10 mg/L30%
March 2026Solids, total suspended, 30-day average27.5555 mg/L≤ 15 mg/L84%
March 2026Solids, total suspended, 7-day average75.8 mg/L≤ 22.5 mg/L237%

Limits in force (45)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Temperature, water deg. centigradedaily maximumreport only (deg C)Jun–Sep
Temperature, water deg. centigradedaily maximumreport only (deg C)Jun–Sep
Temperature, water deg. centigradedaily maximumreport only (deg C)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Conductivitydaily maximumreport only (umho/cm)all year
Conductivitydaily maximumreport only (umho/cm)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Conductivitydaily maximumreport only (umho/cm)Jun–Sep
Conductivitydaily maximumreport only (umho/cm)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Conductivitydaily maximumreport only (umho/cm)Jun–Sep
Oxygen, dissolved [DO]daily minimum≥ 5 mg/Lall year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Jun–Sep
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Jun–Sep
BOD, 5-day, 20 deg. C7-day average≤ 18 mg/LApr–Oct
BOD, 5-day, 20 deg. C7-day average≤ 22.5 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. C30-day average≤ 12 mg/LApr–Oct
BOD, 5-day, 20 deg. C30-day average≤ 15 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≤ 22.5 mg/Lall year
Solids, total suspended30-day average≤ 15 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≤ 24 mg/LApr–Oct
Nitrogen, ammonia total [as N]7-day average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]30-day average≤ 8 mg/LApr–Oct
Nitrogen, ammonia total [as N]30-day average≤ 10 mg/LJan, Feb, Mar, Nov, Dec
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
Cobalt, total [as Co]30-day average≤ 31.2 ug/Lall year
Cobalt, total [as Co]daily maximum≤ 256.2 ug/Lall year
Copper, total [as Cu]30-day average≤ 153.9 ug/Lall year
Copper, total [as Cu]daily maximum≤ 167.7 ug/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
Coliform, fecal MF, MFC broth, 44.5 Cdaily maximumreport only (#/100mL)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Coliform, fecal MF, MFC broth, 44.5 Cdaily maximumreport only (#/100mL)Jun–Sep
Coliform, fecal MF, MFC broth, 44.5 Cdaily maximumreport only (#/100mL)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Coliform, fecal MF, MFC broth, 44.5 Cdaily maximumreport only (#/100mL)Jun–Sep
Flow, in conduit or thru treatment plant30-day average≤ 2 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.

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/NC0044725 · MCP: https://passage-data.com/mcp