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Cantex Inc.

Sewerage Systems, Aurora, Ohio. NPDES permit OH0000922, in force until Mar 31, 2031. Last 12 months: over a limit 10 times (last August 2026), 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
10 values over a limit, 0 required values missing, 0 of 13 reports late

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

Period endingParameterReportedLimitOver by
December 2025BOD, carbonaceous [5 day, 20 C], monthly average15≤ 10 mg/L50%
December 2025Nitrogen, ammonia total [as N], monthly average.0898≤ .0303 kg/d196%
December 2025Nitrogen, ammonia total [as N], monthly average59.3≤ 4 mg/L1383%
December 2025Nitrogen, ammonia total [as N], weekly maximum.0898≤ .0455 kg/d97%
December 2025Nitrogen, ammonia total [as N], weekly maximum59.3≤ 6 mg/L888%
December 2025Solids, total suspended, monthly average17≤ 12 mg/L42%
December 2025Solids, total suspended, weekly maximum17≤ 15 mg/L13%
July 2026E. coli, MTEC-MF, monthly geometric mean1730≤ 126 MPN/100mL1273%
July 2026E. coli, MTEC-MF, weekly geometric mean1730≤ 284 MPN/100mL509%
August 2026BOD, carbonaceous [5 day, 20 C], monthly average.079≤ .0757 kg/d4%

Limits in force (31)

ParameterStatisticLimitMonthsOutfall
Flow ratemonthly averagereport only (gal/d)all year002
Flow ratedaily maximumreport only (gal/d)all year002
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar, Jun, Aug, Dec002
pHdaily minimum≥ 6.5 SUMar, Jun, Aug, Dec002
pHdaily maximum≤ 9 SUMar, Jun, Aug, Dec002
Solids, total suspendedmonthly average≤ 12 mg/LMar, Jun, Aug, Dec002
Solids, total suspendedweekly maximum≤ 15 mg/LMar, Jun, Aug, Dec002
Solids, total suspendedmonthly average≤ .0909 kg/dMar, Jun, Aug, Dec002
Solids, total suspendedweekly maximum≤ .114 kg/dMar, Jun, Aug, Dec002
Oil and grease, hexane extr methodmonthly averagereport only (mg/L)Mar, Jun, Aug, Dec002
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Mar, Jun, Aug, Dec002
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LJun, Aug002
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LMar, Dec002
Nitrogen, ammonia total [as N]weekly maximum≤ 3 mg/LJun, Aug002
Nitrogen, ammonia total [as N]weekly maximum≤ 6 mg/LMar, Dec002
Nitrogen, ammonia total [as N]monthly average≤ .015 kg/dJun, Aug002
Nitrogen, ammonia total [as N]monthly average≤ .03 kg/dMar, Dec002
Nitrogen, ammonia total [as N]weekly maximum≤ .023 kg/dJun, Aug002
Nitrogen, ammonia total [as N]weekly maximum≤ .045 kg/dMar, Dec002
Turbidity [severity]monthly averagereport only (severity)all year002
Turbidity [severity]daily maximumreport only (severity)all year002
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLJun–Aug002
E. coli, MTEC-MFweekly geometric mean≤ 284 MPN/100mLJun–Aug002
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)Mar, Jun, Aug, Dec002
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)Mar, Jun, Aug, Dec002
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMar, Jun, Aug, Dec002
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 15 mg/LMar, Jun, Aug, Dec002
BOD, carbonaceous [5 day, 20 C]monthly average≤ .0757 kg/dMar, Jun, Aug, Dec002
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ .114 kg/dMar, Jun, Aug, Dec002
Sludge waste from secondary clarifiersmonthly averagereport only (gal)Dec588
Sludge waste from secondary clarifiersdaily maximumreport only (gal)Dec588

How strict are these limits?

Cited limits by parameter: Ohio'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/OH0000922 · MCP: https://passage-data.com/mcp