Passage Data · Check a report · Use it from your AI

ODOT Rest Area 6-21

Sewage treatment plant, London, Ohio. NPDES permit OH0081485, in force until Oct 31, 2029. Last 12 months: over a limit 11 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (23 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 14 reports late

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

Period endingParameterReportedLimitOver by
January 2026BOD, carbonaceous [5 day, 20 C], weekly maximum16≤ 15 mg/L7%
January 2026Nitrogen, ammonia total [as N], weekly maximum7.1≤ 4.5 mg/L58%
January 2026Solids, total suspended, monthly average20≤ 12 mg/L67%
January 2026Solids, total suspended, weekly maximum33≤ 18 mg/L83%
February 2026BOD, carbonaceous [5 day, 20 C], weekly maximum18≤ 15 mg/L20%
February 2026Solids, total suspended, monthly average24≤ 12 mg/L100%
February 2026Solids, total suspended, weekly maximum66≤ 18 mg/L267%
March 2026Oxygen, dissolved [DO], daily minimum5.2≥ 6 mg/L13%
April 2026Solids, total suspended, weekly maximum19≤ 18 mg/L6%
June 2026Solids, total suspended, weekly maximum21≤ 18 mg/L17%
July 2026Solids, total suspended, weekly maximum23≤ 18 mg/L28%

Limits in force (35)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year001
pHdaily minimumreport only (SU)all year001
pHdaily maximumreport only (SU)all year001
Solids, total suspendedmonthly average≤ 12 mg/Lall year001
Solids, total suspendedweekly maximum≤ 18 mg/Lall year001
Solids, total suspendedmonthly average≤ .91 kg/dall year001
Solids, total suspendedweekly maximum≤ 1.36 kg/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 1.5 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 4.5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .08 kg/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ .23 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ .11 kg/dMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ .34 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec001
Phosphorus, total [as P]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec001
Phosphorus, total [as P]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec001
Turbidity [severity]monthly averagereport only (severity)all year001
Turbidity [severity]daily maximumreport only (severity)all year001
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLMay–Oct001
E. coli, MTEC-MFweekly geometric mean≤ 284 MPN/100mLMay–Oct001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 15 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ .76 kg/dall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 1.14 kg/dall year001
Biosolids weight indluding admixturesmonthly averagereport only (dry ton)Dec586
Biosolids weight indluding admixturesdaily maximumreport only (dry ton)Dec586
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.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OH0081485 · MCP: https://passage-data.com/mcp