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Akron Municipal WWTP

Sewage treatment plant, Akron, Indiana. NPDES permit IN0025232, in force until Oct 31, 2030. Last 12 months: over a limit 41 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (19 values), outfall 005 form A monthly (15 values), outfall 501 form A monthly (2 values), outfall 502 form A monthly (2 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
23 values over a limit, 1 required value missing, 3 of 48 reports late

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

All 41 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], monthly average42 mg/L≤ 25 mg/L68%
October 2025BOD, carbonaceous [5 day, 20 C], maximum weekly average43.1 mg/L≤ 40 mg/L8%
October 2025Nitrogen, ammonia total [as N], monthly average16.8 mg/L≤ 9.5 mg/L77%
October 2025Nitrogen, ammonia total [as N], maximum weekly average21.3 mg/L≤ 14.3 mg/L49%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average28.8 mg/L≤ 25 mg/L15%
November 2025Nitrogen, ammonia total [as N], monthly average14.05 mg/L≤ 9.5 mg/L48%
November 2025Nitrogen, ammonia total [as N], maximum weekly average16.2 mg/L≤ 14.3 mg/L13%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average34 mg/L≤ 25 mg/L36%
December 2025BOD, carbonaceous [5 day, 20 C], maximum weekly average45.8 mg/L≤ 40 mg/L15%
December 2025Nitrogen, ammonia total [as N], monthly average19.96 mg/L≤ 12.1 mg/L65%
December 2025Nitrogen, ammonia total [as N], maximum weekly average21.2 mg/L≤ 18.2 mg/L16%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average81.3 mg/L≤ 25 mg/L225%
January 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average110 mg/L≤ 40 mg/L175%
January 2026Nitrogen, ammonia total [as N], monthly average23.45 mg/L≤ 12.1 mg/L94%
January 2026Nitrogen, ammonia total [as N], maximum weekly average26.4 mg/L≤ 18.2 mg/L45%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average79.1 mg/L≤ 25 mg/L216%
February 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average112 mg/L≤ 40 mg/L180%
February 2026Nitrogen, ammonia total [as N], monthly average26.98 mg/L≤ 12.1 mg/L123%
February 2026Nitrogen, ammonia total [as N], maximum weekly average29.5 mg/L≤ 18.2 mg/L62%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average46 mg/L≤ 25 mg/L84%
March 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average68.9 mg/L≤ 40 mg/L72%
March 2026Nitrogen, ammonia total [as N], monthly average27.3 mg/L≤ 12.1 mg/L126%
March 2026Nitrogen, ammonia total [as N], maximum weekly average31.7 mg/L≤ 18.2 mg/L74%
March 2026Solids, total suspended, monthly average89.3 mg/L≤ 70 mg/L28%
March 2026Solids, total suspended, maximum weekly average107 mg/L≤ 105 mg/L2%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average40.8 mg/L≤ 25 mg/L63%
April 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average50.5 mg/L≤ 40 mg/L26%
April 2026Chlorine, total residual, daily maximum2.86 mg/L< .06 mg/L4667%
April 2026Chlorine, total residual, monthly average1.56 mg/L< .06 mg/L2500%
April 2026Nitrogen, ammonia total [as N], monthly average15.68 mg/L≤ 12.1 mg/L30%
April 2026Nitrogen, ammonia total [as N], maximum weekly average23.6 mg/L≤ 18.2 mg/L30%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average40.1 mg/L≤ 25 mg/L60%
May 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average56.8 mg/L≤ 40 mg/L42%
May 2026Chlorine, total residual, daily minimum.22 mg/L≥ .5 mg/L56%
May 2026Chlorine, total residual, daily maximum.445 mg/L< .06 mg/L642%
May 2026Chlorine, total residual, monthly average1.9 mg/L< .06 mg/L3067%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average31.2 mg/L≤ 25 mg/L25%
June 2026Nitrogen, ammonia total [as N], maximum weekly average26.5 mg/L≤ 14.3 mg/L85%
June 2026Solids, total suspended, monthly average77.5 mg/L≤ 70 mg/L11%
June 2026Solids, total suspended, maximum weekly average123 mg/L≤ 105 mg/L17%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average26.3 mg/L≤ 25 mg/L5%

Limits in force (42)

ParameterStatisticLimitMonthsOutfall
Stream flow, instantaneousmonthly averagereport only (MGD)all year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 70 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 105 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 9.5 mg/LMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 12.1 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]maximum weekly average≤ 14.3 mg/LMay–Nov001
Nitrogen, ammonia total [as N]maximum weekly average≤ 18.2 mg/LJan, Feb, Mar, Apr, Dec001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Chlorine, total residualmonthly average< .06 mg/LApr–Oct001
Chlorine, total residualdaily maximum< .06 mg/LApr–Oct001
Chlorine, total residualdaily minimum≥ .5 mg/LApr–Oct001
Chlorine, total residualdaily maximumreport only (mg/L)Apr–Oct001
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct001
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall year001
Dilution factordaily maximum< .1 Ratioall year001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year005
pHdaily minimum≥ 6 SUall year005
pHdaily maximum≤ 9 SUall year005
Solids, total suspendedmonthly average≤ 12 mg/Lall year005
Solids, total suspendedmaximum weekly average≤ 18 mg/Lall year005
Nitrogen, ammonia total [as N]monthly average≤ 1.1 mg/LMay–Nov005
Nitrogen, ammonia total [as N]monthly average≤ 1.6 mg/LJan, Feb, Mar, Apr, Dec005
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.6 mg/LMay–Nov005
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.4 mg/LJan, Feb, Mar, Apr, Dec005
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year005
Phosphorus, total [as P]monthly averagereport only (lb/d)all year005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct005
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct005
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year005
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/Lall year005
Flow, totalmonthly totalreport only (Mgal/mo)all year005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year501
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year501
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year502
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year502

How strict are these limits?

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

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