City of Middletown — NPDES permit OH0026522: limits, due date and EPA's record

Sewage treatment plant, major discharger, Middletown, Ohio. NPDES permit OH0026522, in force until Dec 31, 2026. Last 12 months: over a limit 5 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Outfall	Parameter	Reported	Limit	Over by
October 2025	001	E. coli, MTEC-MF, monthly geometric mean	258.34	≤ 126 MPN/100mL	105%
October 2025	001	E. coli, MTEC-MF, weekly geometric mean	352.72	≤ 284 MPN/100mL	24%
August 2026	001	E. coli, MTEC-MF, weekly geometric mean	361.96	≤ 284 MPN/100mL	27%
August 2026	584	Zinc in bottom deposits [dry wgt], monthly average	3200	≤ 2800 mg/kg	14%
September 2026	001	E. coli, MTEC-MF, monthly geometric mean	137.2	≤ 126 MPN/100mL	9%

Limits in force (298)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. centigrade	monthly average	report only (deg C)	all year	001
Temperature, water deg. centigrade	daily maximum	report only (deg C)	all year	001
Oxygen, dissolved [DO]	daily minimum	≥ 4 mg/L	Jan, Feb, Mar, Apr, Nov, Dec	001
Oxygen, dissolved [DO]	daily minimum	≥ 5 mg/L	May–Oct	001
Solids, total suspended	monthly average	≤ 30 mg/L	all year	001
Solids, total suspended	weekly maximum	≤ 45 mg/L	all year	001
Solids, total suspended	monthly average	≤ 2956 kg/d	all year	001
Solids, total suspended	weekly maximum	≤ 4434 kg/d	all year	001
Oil and grease, hexane extr method	daily maximum	≤ 10 mg/L	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 2 mg/L	May–Oct	001
Nitrogen, ammonia total [as N]	monthly average	≤ 15 mg/L	Jan, Feb, Mar, Apr, Nov, Dec	001
Nitrogen, ammonia total [as N]	weekly maximum	≤ 3.5 mg/L	May–Oct	001
Nitrogen, ammonia total [as N]	weekly maximum	≤ 23 mg/L	Jan, Feb, Mar, Apr, Nov, Dec	001
Nitrogen, ammonia total [as N]	monthly average	≤ 197 kg/d	May–Oct	001
Nitrogen, ammonia total [as N]	monthly average	≤ 1478 kg/d	Jan, Feb, Mar, Apr, Nov, Dec	001
Nitrogen, ammonia total [as N]	weekly maximum	≤ 344 kg/d	May–Oct	001
Nitrogen, ammonia total [as N]	weekly maximum	≤ 2266 kg/d	Jan, Feb, Mar, Apr, Nov, Dec	001
Nitrogen, Kjeldahl, total [as N]	monthly average	report only (mg/L)	all year	001
Nitrogen, Kjeldahl, total [as N]	daily maximum	report only (mg/L)	all year	001
Nitrite + Nitrate total [as N]	monthly average	report only (mg/L)	all year	001
Nitrite + Nitrate total [as N]	daily maximum	report only (mg/L)	all year	001
Phosphorus, total [as P]	monthly average	report only (mg/L)	all year	001
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	001
Phosphate, ortho, dissolved [as P]	monthly average	report only (mg/L)	all year	001
Phosphate, ortho, dissolved [as P]	daily maximum	report only (mg/L)	all year	001
Selenium, total recoverable	monthly average	≤ 8.9 ug/L	all year	001
Selenium, total recoverable	daily maximum	≤ 105 ug/L	all year	001
Selenium, total recoverable	monthly average	≤ .87 kg/d	all year	001
Selenium, total recoverable	daily maximum	≤ 10.4 kg/d	all year	001
Nickel, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	001
Nickel, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	001
Silver total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	001
Silver total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	001
Zinc, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	001
Zinc, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	001
Cadmium, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	001
Cadmium, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	001
Lead, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	001
Lead, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	001
Chromium, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	001
Chromium, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	001
Copper, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	001
Copper, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	001
Chromium, hexavalent dissolved [as Cr]	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	001
Chromium, hexavalent dissolved [as Cr]	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	001
E. coli, MTEC-MF	monthly geometric mean	≤ 126 MPN/100mL	May–Oct	001
E. coli, MTEC-MF	weekly geometric mean	≤ 284 MPN/100mL	May–Oct	001
Benzo[b]fluoranthene	monthly average	≤ .41 ug/L	all year	001
Benzo[b]fluoranthene	monthly average	≤ .0404 kg/d	all year	001
Benzo[a]pyrene	monthly average	≤ .041 ug/L	all year	001
Benzo[a]pyrene	monthly average	≤ .00404 kg/d	all year	001
Indeno[1,2,3-cd]pyrene	monthly average	≤ .21 ug/L	all year	001
Indeno[1,2,3-cd]pyrene	monthly average	≤ .0207 kg/d	all year	001
Dibenz[a,h]anthracene	monthly average	≤ .038 ug/L	all year	001
Dibenz[a,h]anthracene	monthly average	≤ .00374 kg/d	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	monthly average	≤ 7.7 ug/L	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 2100 ug/L	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	monthly average	≤ .758 kg/d	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 207 kg/d	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Chlorine, total residual	daily maximum	≤ .035 mg/L	May–Oct	001
Mercury, total low level	monthly average	report only (ng/L)	all year	001
Mercury, total low level	daily maximum	report only (ng/L)	all year	001
Cyanide, free available	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	001
Cyanide, free available	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	001
Toxicity [acute], Ceriodaphnia dubia	monthly average	report only (tox acute)	Aug	001
Toxicity [acute], Ceriodaphnia dubia	daily maximum	report only (tox acute)	Aug	001
Toxicity [chronic], Ceriodaphnia dubia	monthly average	report only (tox chronic)	Aug	001
Toxicity [chronic], Ceriodaphnia dubia	daily maximum	report only (tox chronic)	Aug	001
Toxicity [acute], Pimephales promelas [Fathead Minnow]	monthly average	report only (tox acute)	Aug	001
Toxicity [acute], Pimephales promelas [Fathead Minnow]	daily maximum	report only (tox acute)	Aug	001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]	monthly average	report only (tox chronic)	Aug	001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]	daily maximum	report only (tox chronic)	Aug	001
pH, maximum	daily maximum	≤ 9 SU	all year	001
pH, minimum	daily minimum	≥ 6.5 SU	all year	001
Solids, total dissolved- 180 deg. C	monthly average	report only (mg/L)	all year	001
Solids, total dissolved- 180 deg. C	daily maximum	report only (mg/L)	all year	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 25 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	weekly maximum	≤ 40 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 2464 kg/d	all year	001
BOD, carbonaceous [5 day, 20 C]	weekly maximum	≤ 3942 kg/d	all year	001
Solids, total suspended	monthly average	report only (mg/L)	all year	002
Solids, total suspended	daily maximum	report only (mg/L)	all year	002
Bypass Volume	monthly average	report only (Mgal)	all year	002
Bypass Volume	daily maximum	report only (Mgal)	all year	002
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	all year	002
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	all year	002
Bypass valve	monthly average	report only (occur/mo)	all year	002
Bypass valve	daily maximum	report only (occur/mo)	all year	002
Bypass of treatment	monthly average	report only (hr/mo)	all year	002
Bypass of treatment	daily maximum	report only (hr/mo)	all year	002
Solids, total suspended	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	003
Solids, total suspended	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	003
E. coli, MTEC-MF	monthly geometric mean	report only (MPN/100mL)	Jun, Aug	003
E. coli, MTEC-MF	daily maximum	report only (MPN/100mL)	Jun, Aug	003
Overflows	monthly average	report only (occur/mo)	all year	003
Overflows	daily maximum	report only (occur/mo)	all year	003
Overflow volume [SS0 volume, CSO volume]	monthly average	report only (Mgal)	all year	003
Overflow volume [SS0 volume, CSO volume]	daily maximum	report only (Mgal)	all year	003
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	003
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	003
Solids, total suspended	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	004
Solids, total suspended	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	004
E. coli, MTEC-MF	monthly geometric mean	report only (MPN/100mL)	Jun, Aug	004
E. coli, MTEC-MF	daily maximum	report only (MPN/100mL)	Jun, Aug	004
Overflows	monthly average	report only (occur/mo)	all year	004
Overflows	daily maximum	report only (occur/mo)	all year	004
Overflow volume [SS0 volume, CSO volume]	monthly average	report only (Mgal)	all year	004
Overflow volume [SS0 volume, CSO volume]	daily maximum	report only (Mgal)	all year	004
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	004
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	004
Solids, total suspended	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	005
Solids, total suspended	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	005
E. coli, MTEC-MF	monthly geometric mean	report only (MPN/100mL)	Jun, Aug	005
E. coli, MTEC-MF	daily maximum	report only (MPN/100mL)	Jun, Aug	005
Overflows	monthly average	report only (occur/mo)	all year	005
Overflows	daily maximum	report only (occur/mo)	all year	005
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	005
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	005
Solids, total suspended	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	006
Solids, total suspended	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	006
E. coli, MTEC-MF	monthly geometric mean	report only (MPN/100mL)	Jun, Aug	006
E. coli, MTEC-MF	daily maximum	report only (MPN/100mL)	Jun, Aug	006
Overflows	monthly average	report only (occur/mo)	all year	006
Overflows	daily maximum	report only (occur/mo)	all year	006
Overflow volume [SS0 volume, CSO volume]	monthly average	report only (Mgal)	all year	006
Overflow volume [SS0 volume, CSO volume]	daily maximum	report only (Mgal)	all year	006
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	006
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	006
Solids, total suspended	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	007
Solids, total suspended	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	007
E. coli, MTEC-MF	monthly geometric mean	report only (MPN/100mL)	Jun, Aug	007
E. coli, MTEC-MF	daily maximum	report only (MPN/100mL)	Jun, Aug	007
Overflows	monthly average	report only (occur/mo)	all year	007
Overflows	daily maximum	report only (occur/mo)	all year	007
Overflow volume [SS0 volume, CSO volume]	monthly average	report only (Mgal)	all year	007
Overflow volume [SS0 volume, CSO volume]	daily maximum	report only (Mgal)	all year	007
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	007
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	007
Solids, total suspended	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	008
Solids, total suspended	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	008
E. coli, MTEC-MF	monthly geometric mean	report only (MPN/100mL)	Jun, Aug	008
E. coli, MTEC-MF	daily maximum	report only (MPN/100mL)	Jun, Aug	008
Overflows	monthly average	report only (occur/mo)	all year	008
Overflows	daily maximum	report only (occur/mo)	all year	008
Overflow volume [SS0 volume, CSO volume]	monthly average	report only (Mgal)	all year	008
Overflow volume [SS0 volume, CSO volume]	daily maximum	report only (Mgal)	all year	008
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	008
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	008
Solids, total suspended	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	009
Solids, total suspended	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	009
E. coli, MTEC-MF	monthly geometric mean	report only (MPN/100mL)	Jun, Aug	009
E. coli, MTEC-MF	daily maximum	report only (MPN/100mL)	Jun, Aug	009
Overflows	monthly average	report only (occur/mo)	all year	009
Overflows	daily maximum	report only (occur/mo)	all year	009
Overflow volume [SS0 volume, CSO volume]	monthly average	report only (Mgal)	all year	009
Overflow volume [SS0 volume, CSO volume]	daily maximum	report only (Mgal)	all year	009
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	009
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	009
Solids, total suspended	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	010
Solids, total suspended	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	010
E. coli, MTEC-MF	monthly geometric mean	report only (MPN/100mL)	Jun, Aug	010
E. coli, MTEC-MF	daily maximum	report only (MPN/100mL)	Jun, Aug	010
Overflows	monthly average	report only (occur/mo)	all year	010
Overflows	daily maximum	report only (occur/mo)	all year	010
Overflow volume [SS0 volume, CSO volume]	monthly average	report only (Mgal)	all year	010
Overflow volume [SS0 volume, CSO volume]	daily maximum	report only (Mgal)	all year	010
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	010
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	010
Overflows	monthly average	report only (occur/mo)	all year	300
Overflows	daily maximum	report only (occur/mo)	all year	300
Nitrogen, ammonia in bottom deposits	monthly average	report only (mg/kg)	Mar, Jun, Aug, Dec	581
Nitrogen, ammonia in bottom deposits	daily maximum	report only (mg/kg)	Mar, Jun, Aug, Dec	581
Nitrogen, Kjeldahl, total [as N]	monthly average	report only (mg/kg)	Mar, Jun, Aug, Dec	581
Nitrogen, Kjeldahl, total [as N]	daily maximum	report only (mg/kg)	Mar, Jun, Aug, Dec	581
Phosphorous, total, in bottom deposits	monthly average	report only (mg/kg)	Mar, Jun, Aug, Dec	581
Phosphorous, total, in bottom deposits	daily maximum	report only (mg/kg)	Mar, Jun, Aug, Dec	581
Potassium, in bottom deposits	monthly average	report only (mg/kg)	Mar, Jun, Aug, Dec	581
Potassium, in bottom deposits	daily maximum	report only (mg/kg)	Mar, Jun, Aug, Dec	581
Arsenic, dry weight	daily maximum	≤ 75 mg/kg	Mar, Jun, Aug, Dec	581
Cadmium, in bottom deposits [dry wgt]	daily maximum	≤ 85 mg/kg	Mar, Jun, Aug, Dec	581
Copper in bottom deposits [dry wgt]	daily maximum	≤ 4300 mg/kg	Mar, Jun, Aug, Dec	581
Lead, total dry weight [as Pb]	daily maximum	≤ 840 mg/kg	Mar, Jun, Aug, Dec	581
Nickel, tot in bottom deposits [dry wgt]	daily maximum	≤ 420 mg/kg	Mar, Jun, Aug, Dec	581
Zinc in bottom deposits [dry wgt]	daily maximum	≤ 7500 mg/kg	Mar, Jun, Aug, Dec	581
Selenium, dry weight	daily maximum	≤ 100 mg/kg	Mar, Jun, Aug, Dec	581
Biosolids weight indluding admixtures	monthly average	report only (dry ton)	Mar, Jun, Aug, Dec	581
Biosolids weight indluding admixtures	daily maximum	report only (dry ton)	Mar, Jun, Aug, Dec	581
Sludge weight, dry	monthly average	report only (dry ton)	Mar, Jun, Aug, Dec	581
Sludge weight, dry	daily maximum	report only (dry ton)	Mar, Jun, Aug, Dec	581
Mercury, tot in bot deposits [dry wgt]	daily maximum	≤ 57 mg/kg	Mar, Jun, Aug, Dec	581
Molybdenum, sludge, total, dry weight [as Mo]	daily maximum	≤ 75 mg/kg	Mar, Jun, Aug, Dec	581
Nitrogen, ammonia in bottom deposits	monthly average	report only (mg/kg)	Mar, Jun, Aug, Dec	584
Nitrogen, ammonia in bottom deposits	daily maximum	report only (mg/kg)	Mar, Jun, Aug, Dec	584
Nitrogen, Kjeldahl, total [as N]	monthly average	report only (mg/kg)	Mar, Jun, Aug, Dec	584
Nitrogen, Kjeldahl, total [as N]	daily maximum	report only (mg/kg)	Mar, Jun, Aug, Dec	584
Phosphorous, total, in bottom deposits	monthly average	report only (mg/kg)	Mar, Jun, Aug, Dec	584
Phosphorous, total, in bottom deposits	daily maximum	report only (mg/kg)	Mar, Jun, Aug, Dec	584
Potassium, in bottom deposits	monthly average	report only (mg/kg)	Mar, Jun, Aug, Dec	584
Potassium, in bottom deposits	daily maximum	report only (mg/kg)	Mar, Jun, Aug, Dec	584
Arsenic, dry weight	monthly average	≤ 41 mg/kg	Mar, Jun, Aug, Dec	584
Arsenic, dry weight	daily maximum	≤ 75 mg/kg	Mar, Jun, Aug, Dec	584
Cadmium, in bottom deposits [dry wgt]	monthly average	≤ 39 mg/kg	Mar, Jun, Aug, Dec	584
Cadmium, in bottom deposits [dry wgt]	daily maximum	≤ 85 mg/kg	Mar, Jun, Aug, Dec	584
Copper in bottom deposits [dry wgt]	monthly average	≤ 1500 mg/kg	Mar, Jun, Aug, Dec	584
Copper in bottom deposits [dry wgt]	daily maximum	≤ 4300 mg/kg	Mar, Jun, Aug, Dec	584
Lead, total dry weight [as Pb]	monthly average	≤ 300 mg/kg	Mar, Jun, Aug, Dec	584
Lead, total dry weight [as Pb]	daily maximum	≤ 840 mg/kg	Mar, Jun, Aug, Dec	584
Nickel, tot in bottom deposits [dry wgt]	monthly average	≤ 420 mg/kg	Mar, Jun, Aug, Dec	584
Nickel, tot in bottom deposits [dry wgt]	daily maximum	≤ 420 mg/kg	Mar, Jun, Aug, Dec	584
Zinc in bottom deposits [dry wgt]	monthly average	≤ 2800 mg/kg	Mar, Jun, Aug, Dec	584
Zinc in bottom deposits [dry wgt]	daily maximum	≤ 7500 mg/kg	Mar, Jun, Aug, Dec	584
Selenium, dry weight	monthly average	≤ 100 mg/kg	Mar, Jun, Aug, Dec	584
Selenium, dry weight	daily maximum	≤ 100 mg/kg	Mar, Jun, Aug, Dec	584
Biosolids weight indluding admixtures	monthly average	report only (dry ton)	Mar, Jun, Aug, Dec	584
Biosolids weight indluding admixtures	daily maximum	report only (dry ton)	Mar, Jun, Aug, Dec	584
Sludge weight, dry	monthly average	report only (dry ton)	Mar, Jun, Aug, Dec	584
Sludge weight, dry	daily maximum	report only (dry ton)	Mar, Jun, Aug, Dec	584
Salmonella From Sediments	daily maximum	≤ 3 MPN/4g	Mar, Jun, Aug, Dec	584
Mercury, tot in bot deposits [dry wgt]	monthly average	≤ 17 mg/kg	Mar, Jun, Aug, Dec	584
Mercury, tot in bot deposits [dry wgt]	daily maximum	≤ 57 mg/kg	Mar, Jun, Aug, Dec	584
Molybdenum, sludge, total, dry weight [as Mo]	monthly average	≤ 75 mg/kg	Mar, Jun, Aug, Dec	584
Molybdenum, sludge, total, dry weight [as Mo]	daily maximum	≤ 75 mg/kg	Mar, Jun, Aug, Dec	584
Biosolids weight indluding admixtures	monthly average	report only (dry ton)	Dec	586
Biosolids weight indluding admixtures	daily maximum	report only (dry ton)	Dec	586
Solids, total suspended	monthly average	report only (mg/L)	all year	601
Solids, total suspended	daily maximum	report only (mg/L)	all year	601
Cyanide, total [as CN]	monthly average	report only (mg/L)	Mar, Jun, Aug, Dec	601
Cyanide, total [as CN]	daily maximum	report only (mg/L)	Mar, Jun, Aug, Dec	601
Selenium, total recoverable	monthly average	report only (ug/L)	all year	601
Selenium, total recoverable	daily maximum	report only (ug/L)	all year	601
Nickel, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	601
Nickel, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	601
Silver total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	601
Silver total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	601
Zinc, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	601
Zinc, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	601
Cadmium, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	601
Cadmium, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	601
Lead, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	601
Lead, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	601
Chromium, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	601
Chromium, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	601
Copper, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	601
Copper, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	601
Chromium, hexavalent dissolved [as Cr]	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	601
Chromium, hexavalent dissolved [as Cr]	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	601
Benzo[b]fluoranthene	monthly average	report only (ug/L)	all year	601
Benzo[b]fluoranthene	daily maximum	report only (ug/L)	all year	601
Benzo[a]pyrene	monthly average	report only (ug/L)	all year	601
Benzo[a]pyrene	daily maximum	report only (ug/L)	all year	601
Indeno[1,2,3-cd]pyrene	monthly average	report only (ug/L)	all year	601
Indeno[1,2,3-cd]pyrene	daily maximum	report only (ug/L)	all year	601
Dibenz[a,h]anthracene	monthly average	report only (ug/L)	all year	601
Dibenz[a,h]anthracene	daily maximum	report only (ug/L)	all year	601
Di[2-ethylhexyl] phthalate [DEHP]	monthly average	report only (ug/L)	all year	601
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	report only (ug/L)	all year	601
Mercury, total low level	monthly average	report only (ng/L)	all year	601
Mercury, total low level	daily maximum	report only (ng/L)	all year	601
pH, maximum	daily maximum	report only (SU)	all year	601
pH, minimum	daily minimum	report only (SU)	all year	601
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	all year	601
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	all year	601
Nitrogen, ammonia total [as N]	monthly average	report only (mg/L)	all year	801
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	801
Nitrogen, Kjeldahl, total [as N]	monthly average	report only (mg/L)	all year	801
Nitrogen, Kjeldahl, total [as N]	daily maximum	report only (mg/L)	all year	801
Nitrite + Nitrate total [as N]	monthly average	report only (mg/L)	all year	801
Nitrite + Nitrate total [as N]	daily maximum	report only (mg/L)	all year	801
Phosphorus, total [as P]	monthly average	report only (mg/L)	all year	801
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	801
E. coli, MTEC-MF	monthly geometric mean	report only (MPN/100mL)	Jun–Aug	801
E. coli, MTEC-MF	daily maximum	report only (MPN/100mL)	Jun–Aug	801
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubia	monthly average	report only (%)	Aug	801
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubia	daily maximum	report only (%)	Aug	801
%Effect Static Renewal 96Hr Acute Pimephales promelas	monthly average	report only (%)	Aug	801
%Effect Static Renewal 96Hr Acute Pimephales promelas	daily maximum	report only (%)	Aug	801
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	monthly average	report only (%)	Aug	801
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	daily maximum	report only (%)	Aug	801
%Effect Static Renewal 7Day Chronic Pimephales promelas	monthly average	report only (%)	Aug	801
%Effect Static Renewal 7Day Chronic Pimephales promelas	daily maximum	report only (%)	Aug	801
Temperature, water deg. centigrade	monthly average	report only (deg C)	all year	901
Temperature, water deg. centigrade	daily maximum	report only (deg C)	all year	901
pH	daily minimum	report only (SU)	all year	901
pH	daily maximum	report only (SU)	all year	901
Nitrogen, ammonia total [as N]	monthly average	report only (mg/L)	all year	901
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	901
Nitrogen, Kjeldahl, total [as N]	monthly average	report only (mg/L)	all year	901
Nitrogen, Kjeldahl, total [as N]	daily maximum	report only (mg/L)	all year	901
Nitrite + Nitrate total [as N]	monthly average	report only (mg/L)	all year	901
Nitrite + Nitrate total [as N]	daily maximum	report only (mg/L)	all year	901
Phosphorus, total [as P]	monthly average	report only (mg/L)	all year	901
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	901
Hardness, total [as CaCO3]	monthly average	report only (mg/L)	all year	901
Hardness, total [as CaCO3]	daily maximum	report only (mg/L)	all year	901
E. coli, MTEC-MF	monthly geometric mean	report only (MPN/100mL)	Jun–Aug	901
E. coli, MTEC-MF	daily maximum	report only (MPN/100mL)	Jun–Aug	901

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/OH0026522 · MCP: https://passage-data.com/mcp