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Plain City, Village of

Sewage treatment plant, Plain City, Ohio. NPDES permit OH0027057, in force until Sep 30, 2027. Last 12 months: over a limit 103 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (46 values), outfall 300 form A monthly (2 values), outfall 601 form A monthly (6 values), outfall 801 form A monthly (14 values), outfall 901 form A monthly (20 values)
Renewal application due
Apr 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
51 values over a limit, 2 required values missing, 0 of 63 reports late

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

All 103 values over a limit
Period endingParameterReportedLimitOver by
November 2025BOD, carbonaceous [5 day, 20 C], monthly average110≤ 12 mg/L817%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average270≤ 56.8 kg/d375%
November 2025BOD, carbonaceous [5 day, 20 C], weekly maximum390≤ 19 mg/L1953%
November 2025BOD, carbonaceous [5 day, 20 C], weekly maximum960≤ 89.9 kg/d968%
November 2025Nitrogen, ammonia total [as N], monthly average11.1≤ 2.77 mg/L301%
November 2025Nitrogen, ammonia total [as N], monthly average25.5≤ 13.1 kg/d95%
November 2025Nitrogen, ammonia total [as N], weekly maximum17.1≤ 3.04 mg/L463%
November 2025Nitrogen, ammonia total [as N], weekly maximum40.7≤ 14.4 kg/d183%
November 2025Phosphorus, total [as P], monthly average2.73≤ .42 mg/L550%
November 2025Phosphorus, total [as P], monthly average6.13≤ 1.99 kg/d208%
November 2025Phosphorus, total [as P], weekly maximum19.4≤ 2.98 kg/d551%
November 2025Phosphorus, total [as P], weekly maximum8.69≤ .63 mg/L1279%
November 2025Solids, total suspended, monthly average200≤ 10.8 mg/L1752%
November 2025Solids, total suspended, monthly average490≤ 51.1 kg/d859%
November 2025Solids, total suspended, weekly maximum390≤ 16.2 mg/L2307%
November 2025Solids, total suspended, weekly maximum960≤ 76.6 kg/d1153%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average19≤ 12 mg/L58%
December 2025BOD, carbonaceous [5 day, 20 C], weekly maximum37≤ 19 mg/L95%
December 2025BOD, carbonaceous [5 day, 20 C], weekly maximum96≤ 89.9 kg/d7%
December 2025Nitrogen, ammonia total [as N], monthly average13.4≤ 2.77 mg/L384%
December 2025Nitrogen, ammonia total [as N], monthly average34.8≤ 13.1 kg/d166%
December 2025Nitrogen, ammonia total [as N], weekly maximum14.9≤ 3.04 mg/L390%
December 2025Nitrogen, ammonia total [as N], weekly maximum46.8≤ 14.4 kg/d225%
December 2025Phosphorus, total [as P], monthly average1.17≤ .42 mg/L179%
December 2025Phosphorus, total [as P], monthly average2.96≤ 1.99 kg/d49%
December 2025Phosphorus, total [as P], weekly maximum10.6≤ 2.98 kg/d256%
December 2025Phosphorus, total [as P], weekly maximum4.13≤ .63 mg/L556%
December 2025Solids, total suspended, monthly average140≤ 10.8 mg/L1196%
December 2025Solids, total suspended, monthly average363≤ 51.1 kg/d610%
December 2025Solids, total suspended, weekly maximum231≤ 16.2 mg/L1326%
December 2025Solids, total suspended, weekly maximum585≤ 76.6 kg/d664%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average17.2≤ 12 mg/L43%
January 2026BOD, carbonaceous [5 day, 20 C], weekly maximum29.7≤ 19 mg/L56%
January 2026Nitrogen, ammonia total [as N], monthly average15≤ 2.77 mg/L442%
January 2026Nitrogen, ammonia total [as N], monthly average40.2≤ 13.1 kg/d207%
January 2026Nitrogen, ammonia total [as N], weekly maximum16.7≤ 3.04 mg/L449%
January 2026Nitrogen, ammonia total [as N], weekly maximum52.2≤ 14.4 kg/d263%
January 2026Phosphorus, total [as P], monthly average1.8≤ .42 mg/L329%
January 2026Phosphorus, total [as P], monthly average5.37≤ 1.99 kg/d170%
January 2026Phosphorus, total [as P], weekly maximum2.85≤ .63 mg/L352%
January 2026Phosphorus, total [as P], weekly maximum8.39≤ 2.98 kg/d182%
January 2026Solids, total suspended, monthly average251≤ 51.1 kg/d391%
January 2026Solids, total suspended, monthly average92≤ 10.8 mg/L752%
January 2026Solids, total suspended, weekly maximum123≤ 16.2 mg/L659%
January 2026Solids, total suspended, weekly maximum356≤ 76.6 kg/d365%
February 2026BOD, carbonaceous [5 day, 20 C], weekly maximum21.3≤ 19 mg/L12%
February 2026BOD, carbonaceous [5 day, 20 C], weekly maximum91.8≤ 89.9 kg/d2%
February 2026Nitrogen, ammonia total [as N], monthly average11.6≤ 2.77 mg/L319%
February 2026Nitrogen, ammonia total [as N], monthly average33.4≤ 13.1 kg/d155%
February 2026Nitrogen, ammonia total [as N], weekly maximum15.7≤ 3.04 mg/L416%
February 2026Nitrogen, ammonia total [as N], weekly maximum37.8≤ 14.4 kg/d163%
February 2026Phosphorus, total [as P], monthly average.79≤ .42 mg/L88%
February 2026Phosphorus, total [as P], monthly average2.64≤ 1.99 kg/d33%
February 2026Phosphorus, total [as P], weekly maximum1.89≤ .63 mg/L200%
February 2026Phosphorus, total [as P], weekly maximum7.39≤ 2.98 kg/d148%
February 2026Solids, total suspended, monthly average27≤ 10.8 mg/L150%
February 2026Solids, total suspended, monthly average96.4≤ 51.1 kg/d89%
February 2026Solids, total suspended, weekly maximum279≤ 76.6 kg/d264%
February 2026Solids, total suspended, weekly maximum66.7≤ 16.2 mg/L312%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average20≤ 12 mg/L67%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average67≤ 56.8 kg/d18%
March 2026BOD, carbonaceous [5 day, 20 C], weekly maximum150≤ 89.9 kg/d67%
March 2026BOD, carbonaceous [5 day, 20 C], weekly maximum48≤ 19 mg/L153%
March 2026Nitrogen, ammonia total [as N], monthly average13.9≤ 13.1 kg/d6%
March 2026Nitrogen, ammonia total [as N], monthly average3.76≤ 2.77 mg/L36%
March 2026Nitrogen, ammonia total [as N], weekly maximum26.8≤ 14.4 kg/d86%
March 2026Nitrogen, ammonia total [as N], weekly maximum7.1≤ 3.04 mg/L134%
March 2026Solids, total suspended, monthly average245≤ 51.1 kg/d379%
March 2026Solids, total suspended, monthly average77.7≤ 10.8 mg/L619%
March 2026Solids, total suspended, weekly maximum216≤ 16.2 mg/L1233%
March 2026Solids, total suspended, weekly maximum636≤ 76.6 kg/d730%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average18≤ 12 mg/L50%
April 2026BOD, carbonaceous [5 day, 20 C], weekly maximum32≤ 19 mg/L68%
April 2026Nitrogen, ammonia total [as N], monthly average14≤ 13.1 kg/d7%
April 2026Nitrogen, ammonia total [as N], monthly average5.28≤ 2.77 mg/L91%
April 2026Nitrogen, ammonia total [as N], weekly maximum17.6≤ 14.4 kg/d22%
April 2026Nitrogen, ammonia total [as N], weekly maximum7.57≤ 3.04 mg/L149%
April 2026Phosphorus, total [as P], monthly average.848≤ .42 mg/L102%
April 2026Phosphorus, total [as P], monthly average2.22≤ 1.99 kg/d12%
April 2026Phosphorus, total [as P], weekly maximum1.47≤ .63 mg/L133%
April 2026Phosphorus, total [as P], weekly maximum3.3≤ 2.98 kg/d11%
April 2026Solids, total suspended, monthly average102≤ 51.1 kg/d100%
April 2026Solids, total suspended, monthly average39.7≤ 10.8 mg/L268%
April 2026Solids, total suspended, weekly maximum102≤ 16.2 mg/L530%
April 2026Solids, total suspended, weekly maximum249≤ 76.6 kg/d225%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average21≤ 6 mg/L250%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average84≤ 28.4 kg/d196%
May 2026BOD, carbonaceous [5 day, 20 C], weekly maximum300≤ 42.6 kg/d604%
May 2026BOD, carbonaceous [5 day, 20 C], weekly maximum73≤ 9 mg/L711%
May 2026E. coli, MTEC-MF, monthly geometric meanT≤ 126 MPN/100mL—
May 2026E. coli, MTEC-MF, weekly geometric meanT≤ 284 MPN/100mL—
May 2026Nitrogen, ammonia total [as N], monthly average11.4≤ 1.98 kg/d476%
May 2026Nitrogen, ammonia total [as N], monthly average3.16≤ .42 mg/L652%
May 2026Nitrogen, ammonia total [as N], weekly maximum10.3≤ 1.5 mg/L587%
May 2026Nitrogen, ammonia total [as N], weekly maximum39.2≤ 7.09 kg/d453%
May 2026Phosphorus, total [as P], monthly average22≤ .42 mg/L5138%
May 2026Phosphorus, total [as P], monthly average95≤ 1.99 kg/d4674%
May 2026Phosphorus, total [as P], weekly maximum380≤ 2.98 kg/d12652%
May 2026Phosphorus, total [as P], weekly maximum87≤ .63 mg/L13710%
May 2026Solids, total suspended, monthly average269≤ 34.1 kg/d689%
May 2026Solids, total suspended, monthly average66≤ 7.2 mg/L817%
May 2026Solids, total suspended, weekly maximum1010≤ 51.1 kg/d1877%
May 2026Solids, total suspended, weekly maximum246≤ 10.8 mg/L2178%

Limits in force (157)

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≥ 7 mg/Lall year001
Solids, total suspendedmonthly average≤ 7.2 mg/LMay–Oct001
Solids, total suspendedmonthly average≤ 10.8 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedweekly maximum≤ 10.8 mg/LMay–Oct001
Solids, total suspendedweekly maximum≤ 16.2 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedmonthly average≤ 34.1 kg/dMay–Oct001
Solids, total suspendedmonthly average≤ 51.1 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedweekly maximum≤ 51.1 kg/dMay–Oct001
Solids, total suspendedweekly maximum≤ 76.6 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 2.77 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .42 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 3.04 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 1.5 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 13.1 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.98 kg/dMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 14.4 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 7.09 kg/dMay–Oct001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ .42 mg/Lall year001
Phosphorus, total [as P]weekly maximum≤ .63 mg/Lall year001
Phosphorus, total [as P]monthly average≤ 1.99 kg/dall year001
Phosphorus, total [as P]weekly maximum≤ 2.98 kg/dall year001
Phosphate, ortho, dissolved [as P]monthly averagereport only (mg/L)all year001
Phosphate, ortho, dissolved [as P]daily maximumreport only (mg/L)all year001
Chloride [as Cl]monthly averagereport only (mg/L)all year001
Chloride [as Cl]daily maximumreport only (mg/L)all year001
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year001
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year001
Nickel, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Nickel, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Zinc, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Zinc, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Cadmium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Cadmium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Lead, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Lead, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Chromium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Chromium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Copper, total recoverablemonthly averagereport only (ug/L)all year001
Copper, total recoverabledaily maximumreport only (ug/L)all year001
Chromium, hexavalent dissolved [as Cr]monthly average≤ 12 ug/Lall year001
Chromium, hexavalent dissolved [as Cr]daily maximum≤ 16.3 ug/Lall year001
Chromium, hexavalent dissolved [as Cr]monthly average≤ .057 kg/dall year001
Chromium, hexavalent dissolved [as Cr]daily maximum≤ .077 kg/dall 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
Mercury, total low levelmonthly averagereport only (ng/L)all year001
Mercury, total low leveldaily maximumreport only (ng/L)all year001
Toxicity [acute], Ceriodaphnia dubiamonthly averagereport only (tox acute)Aug001
Toxicity [acute], Ceriodaphnia dubiadaily maximumreport only (tox acute)Aug001
Toxicity [chronic], Ceriodaphnia dubiamonthly averagereport only (tox chronic)Aug001
Toxicity [chronic], Ceriodaphnia dubiadaily maximumreport only (tox chronic)Aug001
Toxicity [acute], Pimephales promelas [Fathead Minnow]monthly averagereport only (tox acute)Aug001
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximumreport only (tox acute)Aug001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]monthly averagereport only (tox chronic)Aug001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximumreport only (tox chronic)Aug001
pH, maximumdaily maximum≤ 9 SUall year001
pH, minimumdaily minimum≥ 6.5 SUall year001
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)all year001
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)all year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 6 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 12 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 9 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 19 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 28.4 kg/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 56.8 kg/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 42.6 kg/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 89.9 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Overflowsmonthly averagereport only (occur/mo)all year300
Overflowsdaily maximumreport only (occur/mo)all year300
Nitrogen, ammonia in bottom depositsmonthly averagereport only (mg/kg)Dec581
Nitrogen, ammonia in bottom depositsdaily maximumreport only (mg/kg)Dec581
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/kg)Dec581
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/kg)Dec581
Nitrite plus nitrate in bottom depositsmonthly averagereport only (mg/kg)Dec581
Nitrite plus nitrate in bottom depositsdaily maximumreport only (mg/kg)Dec581
Phosphorous, total, in bottom depositsmonthly averagereport only (mg/kg)Dec581
Phosphorous, total, in bottom depositsdaily maximumreport only (mg/kg)Dec581
Potassium, in bottom depositsmonthly averagereport only (mg/kg)Dec581
Potassium, in bottom depositsdaily maximumreport only (mg/kg)Dec581
Arsenic, dry weightdaily maximum≤ 75 mg/kgDec581
Cadmium, in bottom deposits [dry wgt]daily maximum≤ 85 mg/kgDec581
Copper in bottom deposits [dry wgt]daily maximum≤ 4300 mg/kgDec581
Lead, total dry weight [as Pb]daily maximum≤ 840 mg/kgDec581
Nickel, tot in bottom deposits [dry wgt]daily maximum≤ 420 mg/kgDec581
Zinc in bottom deposits [dry wgt]daily maximum≤ 7500 mg/kgDec581
Selenium, dry weightdaily maximum≤ 100 mg/kgDec581
Biosolids weight indluding admixturesmonthly averagereport only (dry ton)Dec581
Biosolids weight indluding admixturesdaily maximumreport only (dry ton)Dec581
Sludge weight, drymonthly averagereport only (dry ton)Dec581
Sludge weight, drydaily maximumreport only (dry ton)Dec581
Mercury, tot in bot deposits [dry wgt]daily maximum≤ 57 mg/kgDec581
Molybdenum, sludge, total, dry weight [as Mo]daily maximum≤ 75 mg/kgDec581
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
pHdaily minimumreport only (SU)all year601
pHdaily maximumreport only (SU)all year601
Solids, total suspendedmonthly averagereport only (mg/L)all year601
Solids, total suspendeddaily maximumreport only (mg/L)all year601
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year601
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year601
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year801
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year801
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year801
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year801
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year801
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year801
Phosphorus, total [as P]monthly averagereport only (mg/L)all year801
Phosphorus, total [as P]daily maximumreport only (mg/L)all year801
Chloride [as Cl]monthly averagereport only (mg/L)all year801
Chloride [as Cl]daily maximumreport only (mg/L)all year801
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year801
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year801
E. coli, MTEC-MFmonthly geometric meanreport only (MPN/100mL)Jun–Aug801
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)Jun–Aug801
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)all year801
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)all year801
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiamonthly averagereport only (%)Aug801
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiadaily maximumreport only (%)Aug801
%Effect Static Renewal 96Hr Acute Pimephales promelasmonthly averagereport only (%)Aug801
%Effect Static Renewal 96Hr Acute Pimephales promelasdaily maximumreport only (%)Aug801
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly averagereport only (%)Aug801
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximumreport only (%)Aug801
%Effect Static Renewal 7Day Chronic Pimephales promelasmonthly averagereport only (%)Aug801
%Effect Static Renewal 7Day Chronic Pimephales promelasdaily maximumreport only (%)Aug801
Temperature, water deg. centigrademonthly averagereport only (deg C)all year901
Temperature, water deg. centigradedaily maximumreport only (deg C)all year901
pHdaily minimumreport only (SU)all year901
pHdaily maximumreport only (SU)all year901
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year901
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year901
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year901
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year901
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year901
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year901
Phosphorus, total [as P]monthly averagereport only (mg/L)all year901
Phosphorus, total [as P]daily maximumreport only (mg/L)all year901
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year901
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year901
Chloride [as Cl]monthly averagereport only (mg/L)all year901
Chloride [as Cl]daily maximumreport only (mg/L)all year901
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year901
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year901
E. coli, MTEC-MFmonthly geometric meanreport only (MPN/100mL)Jun–Aug901
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)Jun–Aug901
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)all year901
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)all year901

New limits from Sep 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Solids, total dissolved- 180 deg. C, monthly average891 mg/Lnew1670 mg/L (11 values)1.87×
Solids, total dissolved- 180 deg. C, monthly average4215 kg/dnew——

How strict are these limits?

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

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Your permit document is the final word. As JSON: /api/v1/permits/OH0027057 · MCP: https://passage-data.com/mcp