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South Alabama Utilities

Sewage treatment plant, Mobile, Alabama. NPDES permit AL0081299, in force until Nov 30, 2026. Last 12 months: over a limit 3 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form 1 monthly (41 values)
Renewal application due
Jun 3, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
May 2026E. coli, daily maximum2400≤ 298 #/100mL705%
May 2026E. coli, monthly average628≤ 126 #/100mL398%
May 2026Solids, total suspended, weekly average45.3≤ 45 mg/L1%

Limits in force (43)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 2 mg/Lall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 62.5 lb/dall year
Solids, total suspendedweekly average≤ 93.8 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendedweekly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 20 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 30 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 41.7 lb/dall year
Nitrogen, ammonia total [as N]weekly average≤ 62.5 lb/dall year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Apr–Oct
Nitrogen, Kjeldahl, total [as N]weekly averagereport only (mg/L)Apr–Oct
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)Apr–Oct
Nitrogen, Kjeldahl, total [as N]weekly averagereport only (lb/d)Apr–Oct
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Apr–Oct
Nitrite + Nitrate total [as N]weekly averagereport only (mg/L)Apr–Oct
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)Apr–Oct
Nitrite + Nitrate total [as N]weekly averagereport only (lb/d)Apr–Oct
Phosphorus, total [as P]monthly averagereport only (mg/L)Apr–Oct
Phosphorus, total [as P]weekly averagereport only (mg/L)Apr–Oct
Phosphorus, total [as P]monthly averagereport only (lb/d)Apr–Oct
Phosphorus, total [as P]weekly averagereport only (lb/d)Apr–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .229 mg/Lall year
Chlorine, total residualdaily maximum≤ .396 mg/Lall year
E. colimonthly average≤ 126 #/100mLMay–Oct
E. colimonthly average≤ 548 #/100mLJan, Feb, Mar, Apr, Nov, Dec
E. colidaily maximum≤ 298 #/100mLMay–Oct
E. colidaily maximum≤ 2507 #/100mLJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 37.5 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 52.1 lb/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 78.1 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)all year
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (lb/d)all year

How strict are these limits?

Cited limits by parameter: Alabama'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/AL0081299 · MCP: https://passage-data.com/mcp