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

Countryside MHP

Sewage treatment plant, Amlin, Ohio. NPDES permit OH0121355, in force until Dec 31, 2028. Last 12 months: over a limit 46 times (last August 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
14 values over a limit, 0 required values missing, 0 of 14 reports late

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

All 46 values over a limit
Period endingParameterReportedLimitOver by
December 2025Nitrogen, ammonia total [as N], monthly average.215≤ .2 kg/d8%
December 2025Nitrogen, ammonia total [as N], monthly average5.69≤ 3 mg/L90%
December 2025Nitrogen, ammonia total [as N], weekly maximum5.69≤ 4.5 mg/L26%
January 2026Nitrogen, ammonia total [as N], monthly average.229≤ .2 kg/d15%
January 2026Nitrogen, ammonia total [as N], monthly average5.04≤ 3 mg/L68%
January 2026Nitrogen, ammonia total [as N], weekly maximum5.04≤ 4.5 mg/L12%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average.709≤ .68 kg/d4%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average23.4≤ 10 mg/L134%
February 2026BOD, carbonaceous [5 day, 20 C], weekly maximum23.4≤ 15 mg/L56%
February 2026Nitrogen, ammonia total [as N], monthly average.249≤ .2 kg/d25%
February 2026Nitrogen, ammonia total [as N], monthly average8.23≤ 3 mg/L174%
February 2026Nitrogen, ammonia total [as N], weekly maximum8.23≤ 4.5 mg/L83%
February 2026Solids, total suspended, monthly average18≤ 12 mg/L50%
March 2026Nitrogen, ammonia total [as N], monthly average3.1≤ 3 mg/L3%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average.695≤ .68 kg/d2%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average61.2≤ 10 mg/L512%
April 2026BOD, carbonaceous [5 day, 20 C], weekly maximum61.2≤ 15 mg/L308%
April 2026Nitrogen, ammonia total [as N], monthly average.223≤ .2 kg/d12%
April 2026Nitrogen, ammonia total [as N], monthly average19.6≤ 3 mg/L553%
April 2026Nitrogen, ammonia total [as N], weekly maximum19.6≤ 4.5 mg/L336%
April 2026Solids, total suspended, monthly average51≤ 12 mg/L325%
April 2026Solids, total suspended, weekly maximum51≤ 18 mg/L183%
May 2026E. coli, MTEC-MF, monthly geometric mean2380≤ 126 MPN/100mL1789%
May 2026E. coli, MTEC-MF, weekly geometric mean2380≤ 284 MPN/100mL738%
May 2026Nitrogen, ammonia total [as N], monthly average.397≤ .07 kg/d467%
May 2026Nitrogen, ammonia total [as N], monthly average17.48≤ 1 mg/L1648%
May 2026Nitrogen, ammonia total [as N], weekly maximum.397≤ .1 kg/d297%
May 2026Nitrogen, ammonia total [as N], weekly maximum17.48≤ 1.5 mg/L1065%
May 2026Solids, total suspended, monthly average22≤ 12 mg/L83%
May 2026Solids, total suspended, weekly maximum22≤ 18 mg/L22%
June 2026E. coli, MTEC-MF, monthly geometric meanT≤ 126 MPN/100mL—
June 2026E. coli, MTEC-MF, weekly geometric meanT≤ 284 MPN/100mL—
June 2026Nitrogen, ammonia total [as N], monthly average.519≤ .07 kg/d641%
June 2026Nitrogen, ammonia total [as N], monthly average17.14≤ 1 mg/L1614%
June 2026Nitrogen, ammonia total [as N], weekly maximum.519≤ .1 kg/d419%
June 2026Nitrogen, ammonia total [as N], weekly maximum17.14≤ 1.5 mg/L1043%
July 2026E. coli, MTEC-MF, monthly geometric mean301≤ 126 MPN/100mL139%
July 2026E. coli, MTEC-MF, weekly geometric mean301≤ 284 MPN/100mL6%
July 2026Nitrogen, ammonia total [as N], monthly average.304≤ .07 kg/d334%
July 2026Nitrogen, ammonia total [as N], monthly average26.8≤ 1 mg/L2580%
July 2026Nitrogen, ammonia total [as N], weekly maximum.304≤ .1 kg/d204%
July 2026Nitrogen, ammonia total [as N], weekly maximum26.8≤ 1.5 mg/L1687%
August 2026Nitrogen, ammonia total [as N], monthly average.24≤ .07 kg/d243%
August 2026Nitrogen, ammonia total [as N], monthly average4.87≤ 1 mg/L387%
August 2026Nitrogen, ammonia total [as N], weekly maximum.24≤ .1 kg/d140%
August 2026Nitrogen, ammonia total [as N], weekly maximum4.87≤ 1.5 mg/L225%

Limits in force (37)

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 minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 12 mg/Lall year001
Solids, total suspendedweekly maximum≤ 18 mg/Lall year001
Solids, total suspendedmonthly average≤ .82 kg/dall year001
Solids, total suspendedweekly maximum≤ 1.2 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≤ .07 kg/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ .2 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ .1 kg/dMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ .31 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Mar, Jun, Aug, 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≤ .68 kg/dall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 1 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/OH0121355 · MCP: https://passage-data.com/mcp