LAFAYETTE WWTP — NPDES permit IN0032468: limits, due date and EPA's record

NPDES permit IN0032468 · Major POTW · effective, expires 2028-07-31 · EPA's file as of 2026-09-19

EPA's record, 2025-09-01 to 2026-08-31

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among IN permits in EPA's filings — check your permit).

Limits in force (100)

Outfall	Parameter	Statistic	Limit	Months
001	Duration	MO TOTAL	report only	all year
001	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year
001	Precipitation, monthly accumulation	MO TOTAL	report only	all year
001	Discharge event observation [Visual Monitoring]	MO TOTAL	report only	all year
002	Duration	MO TOTAL	report only	all year
002	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year
002	Precipitation, monthly accumulation	MO TOTAL	report only	all year
002	Discharge event observation [Visual Monitoring]	MO TOTAL	report only	all year
003	Duration	MO TOTAL	report only	all year
003	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year
003	Precipitation, monthly accumulation	MO TOTAL	report only	all year
003	Discharge event observation [Visual Monitoring]	MO TOTAL	report only	all year
006	Duration	MO TOTAL	report only	all year
006	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year
006	Precipitation, monthly accumulation	MO TOTAL	report only	all year
006	Discharge event observation [Visual Monitoring]	MO TOTAL	report only	all year
007	Duration	MO TOTAL	report only	all year
007	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year
007	Precipitation, monthly accumulation	MO TOTAL	report only	all year
007	Discharge event observation [Visual Monitoring]	MO TOTAL	report only	all year
009	Duration	MO TOTAL	report only	all year
009	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year
009	Precipitation, monthly accumulation	MO TOTAL	report only	all year
009	Discharge event observation [Visual Monitoring]	MO TOTAL	report only	all year
010	Duration	MO TOTAL	report only	all year
010	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year
010	Precipitation, monthly accumulation	MO TOTAL	report only	all year
010	Discharge event observation [Visual Monitoring]	MO TOTAL	report only	all year
011	Duration	MO TOTAL	report only	all year
011	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year
011	Precipitation, monthly accumulation	MO TOTAL	report only	all year
011	Discharge event observation [Visual Monitoring]	MO TOTAL	report only	all year
012	Duration	MO TOTAL	report only	all year
012	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year
012	Precipitation, monthly accumulation	MO TOTAL	report only	all year
012	Discharge event observation [Visual Monitoring]	MO TOTAL	report only	all year
014	pH	DAILY MN	>= 6 SU	all year
014	pH	DAILY MX	<= 9 SU	all year
014	Solids, total suspended	MO AVG	<= 30 mg/L	all year
014	Solids, total suspended	MX WK AV	<= 45 mg/L	all year
014	Solids, total suspended	MO AVG	<= 16523 lb/d	all year
014	Solids, total suspended	MX WK AV	<= 24785 lb/d	all year
014	Nitrogen, total [as N]	MO AVG	report only	all year
014	Nitrogen, total [as N]	MO AVG	report only	all year
014	Nitrogen, ammonia total [as N]	MO AVG	<= 4.7 mg/L	May, Jun, Jul, Aug, Sep, Oct, Nov
014	Nitrogen, ammonia total [as N]	MO AVG	<= 9.1 mg/L	Jan, Feb, Mar, Apr, Dec
014	Nitrogen, ammonia total [as N]	MX WK AV	<= 7.1 mg/L	May, Jun, Jul, Aug, Sep, Oct, Nov
014	Nitrogen, ammonia total [as N]	MX WK AV	<= 13.7 mg/L	Jan, Feb, Mar, Apr, Dec
014	Nitrogen, ammonia total [as N]	MO AVG	<= 2589 lb/d	May, Jun, Jul, Aug, Sep, Oct, Nov
014	Nitrogen, ammonia total [as N]	MO AVG	<= 5012 lb/d	Jan, Feb, Mar, Apr, Dec
014	Nitrogen, ammonia total [as N]	MX WK AV	<= 3910 lb/d	May, Jun, Jul, Aug, Sep, Oct, Nov
014	Nitrogen, ammonia total [as N]	MX WK AV	<= 7546 lb/d	Jan, Feb, Mar, Apr, Dec
014	Phosphorus, total [as P]	MO AVG	<= 1 mg/L	all year
014	Phosphorus, total [as P]	MO AVG	report only	all year
014	Nickel, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Nickel, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Nickel, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Nickel, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Zinc, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Zinc, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Zinc, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Zinc, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Chromium, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Chromium, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Chromium, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Chromium, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Copper, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Copper, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Copper, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Copper, total recoverable	DAILY MX	report only	Mar, Jun, Sep, Dec
014	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
014	Chlorine, total residual	MO AVG	< .06 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
014	Chlorine, total residual	DAILY MX	< .06 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
014	E. coli, colony forming units [CFU]	MO GEO	<= 125 CFU/100mL	Apr, May, Jun, Jul, Aug, Sep, Oct
014	E. coli, colony forming units [CFU]	DAILY MX	<= 235 CFU/100mL	Apr, May, Jun, Jul, Aug, Sep, Oct
014	Toxicity [acute], Ceriodaphnia dubia	MAXIMUM	<= 1 tox acute (alert)	Jan, Jul
014	Toxicity [acute], Ceriodaphnia dubia	MAXIMUM	<= 1 tox acute (alert)	Feb, Aug
014	Toxicity [acute], Ceriodaphnia dubia	MAXIMUM	<= 1 tox acute (alert)	Feb, Aug
014	Toxicity [chronic], Ceriodaphnia dubia	MAXIMUM	<= 5.4 tox chronic (alert)	Jan, Jul
014	Toxicity [chronic], Ceriodaphnia dubia	MAXIMUM	<= 5.4 tox chronic (alert)	Feb, Aug
014	Toxicity [chronic], Ceriodaphnia dubia	MAXIMUM	<= 5.4 tox chronic (alert)	Feb, Aug
014	Toxicity [acute], Pimephales promelas [Fathead Minnow]	MAXIMUM	<= 1 tox acute (alert)	Jan, Jul
014	Toxicity [acute], Pimephales promelas [Fathead Minnow]	MAXIMUM	<= 1 tox acute (alert)	Feb, Aug
014	Toxicity [acute], Pimephales promelas [Fathead Minnow]	MAXIMUM	<= 1 tox acute (alert)	Feb, Aug
014	Toxicity [chronic], Pimephales promelas [Fathead Minnow]	MAXIMUM	<= 5.4 tox chronic (alert)	Jan, Jul
014	Toxicity [chronic], Pimephales promelas [Fathead Minnow]	MAXIMUM	<= 5.4 toxic (alert)	Feb, Aug
014	Toxicity [chronic], Pimephales promelas [Fathead Minnow]	MAXIMUM	<= 5.4 toxic (alert)	Feb, Aug
014	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 25 mg/L	all year
014	BOD, carbonaceous [5 day, 20 C]	MX WK AV	<= 40 mg/L	all year
014	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 13769 lb/d	all year
014	BOD, carbonaceous [5 day, 20 C]	MX WK AV	<= 22031 lb/d	all year
014	Flow, total	MO TOTAL	report only	all year
015	Duration	MO TOTAL	report only	all year
015	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year
015	Precipitation, monthly accumulation	MO TOTAL	report only	all year
015	Discharge event observation [Visual Monitoring]	MO TOTAL	report only	all year
022	Duration	MO TOTAL	report only	all year
022	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year
022	Precipitation, monthly accumulation	MO TOTAL	report only	all year
022	Discharge event observation [Visual Monitoring]	MO TOTAL	report only	all year