Crane Division, Naval Surface Warfare Center — NPDES permit IN0021539: limits, due date and EPA's record

Federal facility (National Security), major discharger, Crane, Indiana. NPDES permit IN0021539, in force until Sep 30, 2027. Last 12 months: over a limit 6 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
April 2026	E. coli, colony forming units [CFU], daily maximum	2420 CFU/100mL	≤ 235 CFU/100mL	930%
May 2026	Solids, total suspended, daily maximum	38.6 mg/L	≤ 15 mg/L	157%
May 2026	Solids, total suspended, daily maximum	796 lb/d	≤ 262 lb/d	204%
June 2026	Silver total recoverable, daily maximum	< .009 mg/L	≤ .0024 mg/L	275%
June 2026	Silver total recoverable, monthly average	< .009 mg/L	≤ .001 mg/L	800%
June 2026	Silver total recoverable, monthly average	< .035 lb/d	≤ .018 lb/d	94%

Limits in force (351)

Parameter	Statistic	Limit	Months	Outfall
Oxygen, dissolved [DO]	daily average minimum	≥ 6 mg/L	May–Nov	001
Oxygen, dissolved [DO]	daily average minimum	≥ 5 mg/L	Jan, Feb, Mar, Apr, Dec	001
pH	daily minimum	≥ 6 SU	all year	001
pH	daily maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	≤ 10 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 15 mg/L	all year	001
Solids, total suspended	monthly average	≤ 175 lb/d	all year	001
Solids, total suspended	daily maximum	≤ 262 lb/d	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 1.3 mg/L	May–Nov	001
Nitrogen, ammonia total [as N]	monthly average	≤ 2.2 mg/L	Jan, Feb, Mar, Apr, Dec	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 2.5 mg/L	May–Nov	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 4.5 mg/L	Jan, Feb, Mar, Apr, Dec	001
Nitrogen, ammonia total [as N]	monthly average	≤ 22.06 lb/d	May–Nov	001
Nitrogen, ammonia total [as N]	monthly average	≤ 39.06 lb/d	Jan, Feb, Mar, Apr, Dec	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 44.14 lb/d	May–Nov	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 78.11 lb/d	Jan, Feb, Mar, Apr, Dec	001
Cyanide, total [as CN]	monthly average	< .016 mg/L	all year	001
Cyanide, total [as CN]	daily maximum	< .016 mg/L	all year	001
Silver total recoverable	monthly average	≤ .001 mg/L	all year	001
Silver total recoverable	daily maximum	≤ .0024 mg/L	all year	001
Silver total recoverable	monthly average	≤ .018 lb/d	all year	001
Silver total recoverable	daily maximum	≤ .042 lb/d	all year	001
Cadmium, total recoverable	monthly average	≤ .0015 mg/L	all year	001
Cadmium, total recoverable	daily maximum	≤ .003 mg/L	all year	001
Cadmium, total recoverable	monthly average	≤ .026 lb/d	all year	001
Cadmium, total recoverable	daily maximum	≤ .053 lb/d	all year	001
Lead, total recoverable	monthly average	≤ .0059 mg/L	all year	001
Lead, total recoverable	daily maximum	≤ .012 mg/L	all year	001
Lead, total recoverable	monthly average	≤ .103 lb/d	all year	001
Lead, total recoverable	daily maximum	≤ .21 lb/d	all year	001
Copper, total recoverable	monthly average	≤ .015 mg/L	all year	001
Copper, total recoverable	daily maximum	≤ .02 mg/L	all year	001
Copper, total recoverable	monthly average	≤ .26 lb/d	all year	001
Copper, total recoverable	daily maximum	≤ .35 lb/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
E. coli, colony forming units [CFU]	monthly geometric mean	≤ 125 CFU/100mL	Apr–Oct	001
E. coli, colony forming units [CFU]	daily maximum	≤ 235 CFU/100mL	Apr–Oct	001
Toxicity [acute], Ceriodaphnia dubia	maximum	≤ 1 tox acute	Apr, Oct	001
Toxicity [acute], Ceriodaphnia dubia	maximum	≤ 1 tox acute	Apr, Oct	001
Toxicity [acute], Ceriodaphnia dubia	maximum	≤ 1 tox acute	May, Nov	001
Toxicity [acute], Ceriodaphnia dubia	maximum	≤ 1 tox acute	May, Nov	001
Toxicity [chronic], Ceriodaphnia dubia	maximum	≤ 1 tox chronic	Apr, Oct	001
Toxicity [chronic], Ceriodaphnia dubia	maximum	≤ 1 tox chronic	Apr, Oct	001
Toxicity [chronic], Ceriodaphnia dubia	maximum	≤ 1 tox chronic	May, Nov	001
Toxicity [chronic], Ceriodaphnia dubia	maximum	≤ 1 tox chronic	May, Nov	001
Toxicity [acute], Pimephales promelas [Fathead Minnow]	maximum	≤ 1 tox acute	Apr, Oct	001
Toxicity [acute], Pimephales promelas [Fathead Minnow]	maximum	≤ 1 tox acute	Apr, Oct	001
Toxicity [acute], Pimephales promelas [Fathead Minnow]	maximum	≤ 1 tox acute	May, Nov	001
Toxicity [acute], Pimephales promelas [Fathead Minnow]	maximum	≤ 1 tox acute	May, Nov	001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]	maximum	≤ 1 tox chronic	Apr, Oct	001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]	maximum	≤ 1 tox chronic	Apr, Oct	001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]	maximum	≤ 1 tox chronic	May, Nov	001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]	maximum	≤ 1 tox chronic	May, Nov	001
Mercury, total recoverable	monthly average	report only (ng/L)	Feb, Apr, Jun, Aug, Oct, Dec	001
Mercury, total recoverable	daily maximum	report only (ng/L)	Feb, Apr, Jun, Aug, Oct, Dec	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 10 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 15 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 175 lb/d	all year	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 262 lb/d	all year	001
Flow, total	monthly total	report only (Mgal/mo)	all year	001
pH	daily minimum	≥ 6 SU	all year	002
pH	daily maximum	≤ 9 SU	all year	002
Solids, total suspended	monthly average	≤ 35 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	002
Zinc, total recoverable	monthly average	report only (ug/L)	all year	002
Zinc, total recoverable	daily maximum	report only (ug/L)	all year	002
Cadmium, total recoverable	monthly average	report only (ug/L)	all year	002
Cadmium, total recoverable	daily maximum	report only (ug/L)	all year	002
Copper, total recoverable	monthly average	report only (ug/L)	all year	002
Copper, total recoverable	daily maximum	report only (ug/L)	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Flow, total	monthly total	report only (Mgal/mo)	all year	002
pH	daily minimum	≥ 6 SU	all year	003
pH	daily maximum	≤ 9 SU	all year	003
Solids, total suspended	monthly average	≤ 35 mg/L	all year	003
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	003
Zinc, total recoverable	monthly average	report only (ug/L)	all year	003
Zinc, total recoverable	daily maximum	report only (ug/L)	all year	003
Cadmium, total recoverable	monthly average	report only (ug/L)	all year	003
Cadmium, total recoverable	daily maximum	report only (ug/L)	all year	003
Copper, total recoverable	monthly average	report only (ug/L)	all year	003
Copper, total recoverable	daily maximum	report only (ug/L)	all year	003
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
Flow, total	monthly total	report only (Mgal/mo)	all year	003
pH	daily minimum	≥ 6 SU	all year	004
pH	daily maximum	≤ 9 SU	all year	004
Solids, total suspended	monthly average	≤ 35 mg/L	all year	004
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	004
Zinc, total recoverable	monthly average	report only (mg/L)	all year	004
Zinc, total recoverable	daily maximum	report only (mg/L)	all year	004
Cadmium, total recoverable	monthly average	report only (mg/L)	all year	004
Cadmium, total recoverable	daily maximum	report only (mg/L)	all year	004
Copper, total recoverable	monthly average	report only (mg/L)	all year	004
Copper, total recoverable	daily maximum	report only (mg/L)	all year	004
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	004
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	004
Flow, total	monthly total	report only (Mgal/mo)	all year	004
pH	daily minimum	≥ 6 SU	all year	008
pH	daily maximum	≤ 9 SU	all year	008
Solids, total suspended	monthly average	≤ 35 mg/L	all year	008
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	008
Zinc, total recoverable	monthly average	report only (ug/L)	all year	008
Zinc, total recoverable	daily maximum	report only (ug/L)	all year	008
Cadmium, total recoverable	monthly average	report only (ug/L)	all year	008
Cadmium, total recoverable	daily maximum	report only (ug/L)	all year	008
Copper, total recoverable	monthly average	report only (ug/L)	all year	008
Copper, total recoverable	daily maximum	report only (ug/L)	all year	008
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	008
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	008
Flow, total	monthly total	report only (Mgal/mo)	all year	008
pH	daily minimum	≥ 6 SU	all year	012
pH	daily maximum	≤ 9 SU	all year	012
Solids, total suspended	monthly average	≤ 35 mg/L	all year	012
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	012
Zinc, total recoverable	monthly average	report only (ug/L)	all year	012
Zinc, total recoverable	daily maximum	report only (ug/L)	all year	012
Cadmium, total recoverable	monthly average	report only (ug/L)	all year	012
Cadmium, total recoverable	daily maximum	report only (ug/L)	all year	012
Copper, total recoverable	monthly average	report only (ug/L)	all year	012
Copper, total recoverable	daily maximum	report only (ug/L)	all year	012
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	012
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	012
Flow, total	monthly total	report only (Mgal/mo)	all year	012
pH	daily minimum	≥ 6 SU	all year	014
pH	daily maximum	≤ 9 SU	all year	014
Solids, total suspended	monthly average	≤ 35 mg/L	all year	014
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	014
Oil and grease, hexane extr method	monthly average	≤ 10 mg/L	all year	014
Oil and grease, hexane extr method	daily maximum	≤ 15 mg/L	all year	014
Zinc, total recoverable	monthly average	≤ .189 mg/L	all year	014
Zinc, total recoverable	daily maximum	≤ .387 mg/L	all year	014
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	014
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	014
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 25 mg/L	all year	014
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 50 mg/L	all year	014
Flow, total	monthly total	report only (Mgal/mo)	all year	014
pH	daily minimum	≥ 6 SU	all year	015
pH	daily maximum	≤ 9 SU	all year	015
Solids, total suspended	monthly average	≤ 35 mg/L	all year	015
Solids, total suspended	daily maximum	≤ 70 mg/L	all year	015
Oil and grease, hexane extr method	monthly average	≤ 10 mg/L	all year	015
Oil and grease, hexane extr method	daily maximum	≤ 15 mg/L	all year	015
Zinc, total recoverable	monthly average	≤ .189 mg/L	all year	015
Zinc, total recoverable	daily maximum	≤ .387 mg/L	all year	015
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	015
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	015
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 25 mg/L	all year	015
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 50 mg/L	all year	015
Flow, total	monthly total	report only (Mgal/mo)	all year	015
pH	daily minimum	≥ 6 SU	all year	018
pH	daily maximum	≤ 9 SU	all year	018
Copper, total recoverable	monthly average	report only (mg/L)	all year	018
Copper, total recoverable	daily maximum	report only (mg/L)	all year	018
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	018
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	018
Chlorine, total residual	monthly average	< .06 mg/L	all year	018
Chlorine, total residual	daily maximum	< .06 mg/L	all year	018
Flow, total	monthly total	report only (Mgal/mo)	all year	018
Oil and grease, hexane extr method	monthly average	≤ 26 mg/L	all year	101
Oil and grease, hexane extr method	daily maximum	≤ 52 mg/L	all year	101
Cyanide, total [as CN]	monthly average	< .016 mg/L	Dec	101
Cyanide, total [as CN]	monthly average	< .016 mg/L	Dec	101
Cyanide, total [as CN]	daily maximum	≤ .021 mg/L	Dec	101
Cyanide, total [as CN]	daily maximum	≤ .021 mg/L	Dec	101
Nickel, total recoverable	monthly average	≤ 2.38 mg/L	Dec	101
Nickel, total recoverable	monthly average	≤ 2.38 mg/L	Dec	101
Nickel, total recoverable	daily maximum	≤ 3.98 mg/L	Dec	101
Nickel, total recoverable	daily maximum	≤ 3.98 mg/L	Dec	101
Silver total recoverable	monthly average	≤ .24 mg/L	Dec	101
Silver total recoverable	monthly average	≤ .24 mg/L	Dec	101
Silver total recoverable	daily maximum	≤ .43 mg/L	Dec	101
Silver total recoverable	daily maximum	≤ .43 mg/L	Dec	101
Zinc, total recoverable	monthly average	≤ 1.48 mg/L	all year	101
Zinc, total recoverable	daily maximum	≤ 2.61 mg/L	all year	101
Cadmium, total recoverable	monthly average	≤ .26 mg/L	all year	101
Cadmium, total recoverable	daily maximum	≤ .69 mg/L	all year	101
Lead, total recoverable	monthly average	≤ .43 mg/L	Dec	101
Lead, total recoverable	monthly average	≤ .43 mg/L	Dec	101
Lead, total recoverable	daily maximum	≤ .69 mg/L	Dec	101
Lead, total recoverable	daily maximum	≤ .69 mg/L	Dec	101
Chromium, total recoverable	monthly average	≤ 1.71 mg/L	Dec	101
Chromium, total recoverable	monthly average	≤ 1.71 mg/L	Dec	101
Chromium, total recoverable	daily maximum	≤ 2.77 mg/L	Dec	101
Chromium, total recoverable	daily maximum	≤ 2.77 mg/L	Dec	101
Copper, total recoverable	monthly average	≤ 2.07 mg/L	Dec	101
Copper, total recoverable	monthly average	≤ 2.07 mg/L	Dec	101
Copper, total recoverable	daily maximum	≤ 3.38 mg/L	Dec	101
Copper, total recoverable	daily maximum	≤ 3.38 mg/L	Dec	101
Chromium, hexavalent dissolved [as Cr]	monthly average	≤ .09 mg/L	all year	101
Chromium, hexavalent dissolved [as Cr]	daily maximum	≤ .25 mg/L	all year	101
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	101
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	101
Total toxic organics [TTO] [40 CFR433]	daily maximum	≤ 2.13 mg/L	Jan	101
Nitrogen, nitrate total [as N]	daily maximum	≤ 90 mg/L	all year	107
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	107
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	107
Hydrocarbons, nitrated	daily maximum	≤ 2 mg/L	all year	107
pH	daily minimum	≥ 6 SU	all year	108
pH	daily minimum	≥ 5 SU	all year	108
pH	daily maximum	≤ 9 SU	all year	108
pH	daily maximum	≤ 10 SU	all year	108
Solids, total suspended	monthly average	report only (mg/L)	all year	108
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	108
Arsenic, total recoverable	monthly average	report only (mg/L)	all year	108
Arsenic, total recoverable	daily maximum	report only (mg/L)	all year	108
Selenium, total recoverable	monthly average	report only (mg/L)	all year	108
Selenium, total recoverable	daily maximum	report only (mg/L)	all year	108
Barium, total recoverable	monthly average	report only (mg/L)	all year	108
Barium, total recoverable	daily maximum	report only (mg/L)	all year	108
Cadmium, total recoverable	monthly average	report only (mg/L)	all year	108
Cadmium, total recoverable	daily maximum	report only (mg/L)	all year	108
Lead, total recoverable	monthly average	report only (mg/L)	all year	108
Lead, total recoverable	daily maximum	report only (mg/L)	all year	108
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	108
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	108
Butanone	monthly average	report only (mg/L)	all year	108
Butanone	daily maximum	report only (mg/L)	all year	108
Acetone	monthly average	report only (mg/L)	all year	108
Acetone	daily maximum	report only (mg/L)	all year	108
pH	daily minimum	≥ 5 SU	all year	109
pH	daily maximum	≤ 10 SU	all year	109
Solids, total suspended	monthly average	report only (mg/L)	all year	109
Solids, total suspended	daily maximum	report only (mg/L)	all year	109
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	109
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	109
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	all year	109
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	all year	109
Flow, total	monthly total	report only (Mgal/mo)	all year	109
pH	daily minimum	≥ 5 SU	all year	116
pH	daily maximum	≤ 10 SU	all year	116
Solids, total suspended	monthly average	report only (mg/L)	all year	116
Solids, total suspended	daily maximum	report only (mg/L)	all year	116
Nitrogen, ammonia total [as N]	monthly average	report only (mg/L)	all year	116
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	116
Nitrogen, nitrate total [as N]	monthly average	report only (mg/L)	all year	116
Nitrogen, nitrate total [as N]	daily maximum	report only (mg/L)	all year	116
Zinc, total recoverable	monthly average	report only (mg/L)	all year	116
Zinc, total recoverable	daily maximum	report only (mg/L)	all year	116
Ammonium picrate	monthly average	report only (mg/L)	all year	116
Ammonium picrate	daily maximum	report only (mg/L)	all year	116
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	116
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	116
pH	daily minimum	≥ 5 SU	all year	117
pH	daily maximum	≤ 10 SU	all year	117
Solids, total suspended	monthly average	report only (mg/L)	all year	117
Solids, total suspended	daily maximum	report only (mg/L)	all year	117
Nitrogen, ammonia total [as N]	monthly average	report only (mg/L)	all year	117
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	117
Nitrogen, nitrate total [as N]	monthly average	report only (mg/L)	all year	117
Nitrogen, nitrate total [as N]	daily maximum	report only (mg/L)	all year	117
Zinc, total recoverable	monthly average	report only (mg/L)	all year	117
Zinc, total recoverable	daily maximum	report only (mg/L)	all year	117
Ammonium picrate	monthly average	report only (mg/L)	all year	117
Ammonium picrate	daily maximum	report only (mg/L)	all year	117
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	117
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	117
Nitrogen, nitrate total [as N]	daily maximum	≤ 90 mg/L	all year	301
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	301
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	301
Hydrocarbons, nitrated	daily maximum	≤ 2 mg/L	all year	301
Oil and grease, hexane extr method	monthly average	≤ 26 mg/L	all year	501
Oil and grease, hexane extr method	daily maximum	≤ 52 mg/L	all year	501
Cyanide, total [as CN]	monthly average	< .016 mg/L	Dec	501
Cyanide, total [as CN]	monthly average	< .016 mg/L	Dec	501
Cyanide, total [as CN]	daily maximum	≤ .021 mg/L	Dec	501
Cyanide, total [as CN]	daily maximum	≤ .021 mg/L	Dec	501
Nickel, total recoverable	monthly average	≤ 2.38 mg/L	Dec	501
Nickel, total recoverable	monthly average	≤ 2.38 mg/L	Dec	501
Nickel, total recoverable	daily maximum	≤ 3.98 mg/L	Dec	501
Nickel, total recoverable	daily maximum	≤ 3.98 mg/L	Dec	501
Silver total recoverable	monthly average	≤ .24 mg/L	Dec	501
Silver total recoverable	monthly average	≤ .24 mg/L	Dec	501
Silver total recoverable	daily maximum	≤ .43 mg/L	Dec	501
Silver total recoverable	daily maximum	≤ .43 mg/L	Dec	501
Zinc, total recoverable	monthly average	≤ 1.48 mg/L	Dec	501
Zinc, total recoverable	monthly average	≤ 1.48 mg/L	Dec	501
Zinc, total recoverable	daily maximum	≤ 2.61 mg/L	Dec	501
Zinc, total recoverable	daily maximum	≤ 2.61 mg/L	Dec	501
Cadmium, total recoverable	monthly average	≤ .26 mg/L	Dec	501
Cadmium, total recoverable	monthly average	≤ .26 mg/L	Dec	501
Cadmium, total recoverable	daily maximum	≤ .69 mg/L	Dec	501
Cadmium, total recoverable	daily maximum	≤ .69 mg/L	Dec	501
Lead, total recoverable	monthly average	≤ .43 mg/L	Dec	501
Lead, total recoverable	monthly average	≤ .43 mg/L	Dec	501
Lead, total recoverable	daily maximum	≤ .69 mg/L	Dec	501
Lead, total recoverable	daily maximum	≤ .69 mg/L	Dec	501
Chromium, total recoverable	monthly average	≤ 1.71 mg/L	Dec	501
Chromium, total recoverable	monthly average	≤ 1.71 mg/L	Dec	501
Chromium, total recoverable	daily maximum	≤ 2.77 mg/L	Dec	501
Chromium, total recoverable	daily maximum	≤ 2.77 mg/L	Dec	501
Copper, total recoverable	monthly average	≤ 2.07 mg/L	Dec	501
Copper, total recoverable	monthly average	≤ 2.07 mg/L	Dec	501
Copper, total recoverable	daily maximum	≤ 3.38 mg/L	Dec	501
Copper, total recoverable	daily maximum	≤ 3.38 mg/L	Dec	501
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	501
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	501
Total toxic organics [TTO] [40 CFR433]	daily maximum	≤ 2.13 mg/L	Jan	501
Oil and grease, hexane extr method	monthly average	≤ 26 mg/L	all year	601
Oil and grease, hexane extr method	daily maximum	≤ 52 mg/L	all year	601
Cyanide, total [as CN]	monthly average	< .016 mg/L	Dec	601
Cyanide, total [as CN]	monthly average	< .016 mg/L	Dec	601
Cyanide, total [as CN]	daily maximum	≤ .021 mg/L	Dec	601
Cyanide, total [as CN]	daily maximum	≤ .021 mg/L	Dec	601
Nickel, total recoverable	monthly average	≤ 2.38 mg/L	Dec	601
Nickel, total recoverable	monthly average	≤ 2.38 mg/L	Dec	601
Nickel, total recoverable	daily maximum	≤ 3.98 mg/L	Dec	601
Nickel, total recoverable	daily maximum	≤ 3.98 mg/L	Dec	601
Silver total recoverable	monthly average	≤ .24 mg/L	Dec	601
Silver total recoverable	monthly average	≤ .24 mg/L	Dec	601
Silver total recoverable	daily maximum	≤ .43 mg/L	Dec	601
Silver total recoverable	daily maximum	≤ .43 mg/L	Dec	601
Zinc, total recoverable	monthly average	≤ 1.48 mg/L	Dec	601
Zinc, total recoverable	monthly average	≤ 1.48 mg/L	Dec	601
Zinc, total recoverable	daily maximum	≤ 2.61 mg/L	Dec	601
Zinc, total recoverable	daily maximum	≤ 2.61 mg/L	Dec	601
Cadmium, total recoverable	monthly average	≤ .07 mg/L	all year	601
Cadmium, total recoverable	daily maximum	≤ .11 mg/L	all year	601
Lead, total recoverable	monthly average	≤ .43 mg/L	Dec	601
Lead, total recoverable	monthly average	≤ .43 mg/L	Dec	601
Lead, total recoverable	daily maximum	≤ .69 mg/L	Dec	601
Lead, total recoverable	daily maximum	≤ .69 mg/L	Dec	601
Chromium, total recoverable	monthly average	≤ 1.71 mg/L	all year	601
Chromium, total recoverable	daily maximum	≤ 2.77 mg/L	all year	601
Copper, total recoverable	monthly average	≤ 2.07 mg/L	Dec	601
Copper, total recoverable	monthly average	≤ 2.07 mg/L	Dec	601
Copper, total recoverable	daily maximum	≤ 3.38 mg/L	Dec	601
Copper, total recoverable	daily maximum	≤ 3.38 mg/L	Dec	601
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	601
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	601
Total toxic organics [TTO] [40 CFR433]	daily maximum	≤ 2.13 mg/L	Jan	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, ammonia total [as N]	monthly average	report only (lb/d)	all year	801
Nitrogen, ammonia total [as N]	daily maximum	report only (lb/d)	all year	801
Nitrogen, nitrate total [as N]	monthly average	report only (mg/L)	all year	801
Nitrogen, nitrate total [as N]	daily maximum	report only (mg/L)	all year	801
Nitrogen, nitrate total [as N]	monthly average	report only (lb/d)	all year	801
Nitrogen, nitrate total [as N]	daily maximum	report only (lb/d)	all year	801
Toluene	daily maximum	report only (ug/L)	all year	801
Ammonium picrate	daily maximum	report only (mg/L)	all year	801
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	801
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	801
pH	daily minimum	≥ 5 SU	all year	901
pH	daily maximum	≤ 10 SU	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
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	901
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	901

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/IN0021539 · MCP: https://passage-data.com/mcp