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City of Arab Sewer Board

Sewage treatment plant, Arab, Alabama. NPDES permit AL0056626, in force until Jun 30, 2029. Last 12 months: over a limit 57 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form 1 monthly (43 values), form Q quarterly (2 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
37 values over a limit, 0 required values missing, 0 of 20 reports late

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

All 57 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], monthly average15≤ 13 mg/L15%
October 2025BOD, carbonaceous [5 day, 20 C], weekly average25≤ 19.5 mg/L28%
October 2025E. coli, daily maximum24200≤ 298 #/100mL8021%
October 2025Nitrogen, ammonia total [as N], monthly average38.47≤ 8.3 lb/d363%
October 2025Nitrogen, ammonia total [as N], monthly average8.64≤ 1.2 mg/L620%
October 2025Nitrogen, ammonia total [as N], weekly average19.43≤ 1.8 mg/L979%
October 2025Nitrogen, ammonia total [as N], weekly average75.61≤ 12.4 lb/d510%
October 2025Solids, total suspended, weekly average69≤ 45 mg/L53%
November 2025Nitrogen, ammonia total [as N], weekly average2.15≤ 1.8 mg/L19%
November 2025pH, daily maximum8.7≤ 8.5 SU—
February 2026E. coli, daily maximum2720≤ 2507 #/100mL8%
February 2026Solids, suspended percent removal, monthly average minimum84≥ 85 %7%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average132≤ 117 lb/d13%
March 2026BOD, carbonaceous [5 day, 20 C], weekly average193≤ 176 lb/d10%
March 2026Nitrogen, ammonia total [as N], weekly average3.9≤ 3 mg/L30%
March 2026Nitrogen, ammonia total [as N], weekly average37.78≤ 20.7 lb/d83%
March 2026Solids, suspended percent removal, monthly average minimum78≥ 85 %47%
March 2026Solids, total suspended, monthly average274≤ 207 lb/d32%
March 2026Solids, total suspended, weekly average648≤ 311 lb/d108%
April 2026Nitrogen, ammonia total [as N], monthly average25.99≤ 13.8 lb/d88%
April 2026Nitrogen, ammonia total [as N], monthly average4.34≤ 2 mg/L117%
April 2026Nitrogen, ammonia total [as N], weekly average48.53≤ 20.7 lb/d134%
April 2026Nitrogen, ammonia total [as N], weekly average9.1≤ 3 mg/L203%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average110≤ 89.9 lb/d22%
May 2026BOD, carbonaceous [5 day, 20 C], weekly average178≤ 134 lb/d33%
May 2026E. coli, daily maximum9210≤ 298 #/100mL2991%
May 2026Nitrogen, ammonia total [as N], monthly average1.75≤ 1.2 mg/L46%
May 2026Nitrogen, ammonia total [as N], monthly average17.03≤ 8.3 lb/d105%
May 2026Nitrogen, ammonia total [as N], weekly average3.77≤ 1.8 mg/L109%
May 2026Nitrogen, ammonia total [as N], weekly average38.86≤ 12.4 lb/d213%
May 2026Solids, total suspended, monthly average248≤ 207 lb/d20%
May 2026Solids, total suspended, weekly average52≤ 45 mg/L16%
May 2026Solids, total suspended, weekly average614≤ 311 lb/d97%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average104≤ 89.9 lb/d16%
June 2026BOD, carbonaceous [5 day, 20 C], weekly average146≤ 134 lb/d9%
June 2026E. coli, daily maximum8160≤ 298 #/100mL2638%
June 2026E. coli, monthly average299≤ 126 #/100mL137%
June 2026Nitrogen, ammonia total [as N], monthly average12.78≤ 8.3 lb/d54%
June 2026Nitrogen, ammonia total [as N], weekly average2.2≤ 1.8 mg/L22%
June 2026Nitrogen, ammonia total [as N], weekly average21.81≤ 12.4 lb/d76%
June 2026Solids, total suspended, monthly average275≤ 207 lb/d33%
June 2026Solids, total suspended, weekly average430≤ 311 lb/d38%
July 2026E. coli, daily maximum6870≤ 298 #/100mL2205%
July 2026Nitrogen, ammonia total [as N], monthly average20.46≤ 8.3 lb/d147%
July 2026Nitrogen, ammonia total [as N], monthly average3.37≤ 1.2 mg/L181%
July 2026Nitrogen, ammonia total [as N], weekly average24.95≤ 12.4 lb/d101%
July 2026Nitrogen, ammonia total [as N], weekly average4.83≤ 1.8 mg/L168%
August 2026E. coli, daily maximum24200≤ 298 #/100mL8021%
August 2026Nitrogen, ammonia total [as N], monthly average13.13≤ 8.3 lb/d58%
August 2026Nitrogen, ammonia total [as N], monthly average2.35≤ 1.2 mg/L96%
August 2026Nitrogen, ammonia total [as N], weekly average30.52≤ 12.4 lb/d146%
August 2026Nitrogen, ammonia total [as N], weekly average5.27≤ 1.8 mg/L193%
September 2026E. coli, daily maximum7270≤ 298 #/100mL2340%
September 2026Nitrogen, ammonia total [as N], monthly average35.97≤ 8.3 lb/d333%
September 2026Nitrogen, ammonia total [as N], monthly average6≤ 1.2 mg/L400%
September 2026Nitrogen, ammonia total [as N], weekly average105.66≤ 12.4 lb/d752%
September 2026Nitrogen, ammonia total [as N], weekly average15≤ 1.8 mg/L733%

Limits in force (57)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 207 lb/dall year
Solids, total suspendedweekly average≤ 311 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≤ 1.2 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]weekly average≤ 1.8 mg/LMay–Nov
Nitrogen, ammonia total [as N]weekly average≤ 3 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 8.3 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 13.8 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]weekly average≤ 12.4 lb/dMay–Nov
Nitrogen, ammonia total [as N]weekly average≤ 20.7 lb/dJan, Feb, Mar, Apr, Dec
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
Zinc, total recoverablemonthly averagereport only (ug/L)all year
Zinc, total recoverabledaily maximumreport only (ug/L)all year
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≤ .011 mg/Lall year
Chlorine, total residualdaily maximum≤ .019 mg/Lall year
E. colimonthly average≤ 548 #/100mLJan, Feb, Mar, Apr, Nov, Dec
E. colimonthly average≤ 126 #/100mLMay–Oct
E. colidaily maximum≤ 2507 #/100mLJan, Feb, Mar, Apr, Nov, Dec
E. colidaily maximum≤ 298 #/100mLMay–Oct
Toxicity [chronic], Ceriodaphnia dubiasingle sample≤ 0 pass=0;fail=1Feb, May, Aug, Nov
Toxicity [chronic], Pimephales promelas [Fathead Minnow]single sample≤ 0 pass=0;fail=1Feb, May, Aug, Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 13 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 17 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 19.5 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]weekly average≤ 25.5 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 89.9 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 117 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 134 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]weekly average≤ 176 lb/dJan, Feb, Mar, Apr, Dec
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
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

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

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