HICO Utility Company — NPDES permit AL0078344: limits, due date and EPA's record

NPDES permit AL0078344 · Minor NON-POTW · effective, expires 2029-04-30 · EPA's file as of 2026-09-19

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

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (4).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (209)

Outfall	Parameter	Statistic	Limit	Months
001	Oxygen, dissolved [DO]	DAILY MN	>= 6 mg/L	all year
001	Oxygen, dissolved [DO]	DAILY MN	>= 6 mg/L	all year
001	Oxygen, dissolved [DO]	DAILY MN	>= 6 mg/L	all year
001	Oxygen, dissolved [DO]	DAILY MN	>= 6 mg/L	all year
001	pH	DAILY MN	>= 6 SU	all year
001	pH	DAILY MN	>= 6 SU	all year
001	pH	DAILY MN	>= 6 SU	all year
001	pH	DAILY MN	>= 6 SU	all year
001	pH	DAILY MX	<= 8.5 SU	all year
001	pH	DAILY MX	<= 8.5 SU	all year
001	pH	DAILY MX	<= 8.5 SU	all year
001	pH	DAILY MX	<= 8.5 SU	all year
001	Solids, total suspended	MO AVG	<= 30 mg/L	all year
001	Solids, total suspended	MO AVG	<= 30 mg/L	all year
001	Solids, total suspended	MO AVG	<= 30 mg/L	all year
001	Solids, total suspended	MO AVG	<= 30 mg/L	all year
001	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
001	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
001	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
001	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
001	Solids, total suspended	MO AVG	<= 500 lb/d	all year
001	Solids, total suspended	MO AVG	<= 240 lb/d	all year
001	Solids, total suspended	MO AVG	<= 120 lb/d	all year
001	Solids, total suspended	MO AVG	<= 750 lb/d	all year
001	Solids, total suspended	WKLY AVG	<= 750 lb/d	all year
001	Solids, total suspended	WKLY AVG	<= 360 lb/d	all year
001	Solids, total suspended	WKLY AVG	<= 180 lb/d	all year
001	Solids, total suspended	WKLY AVG	<= 1125 lb/d	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Solids, total suspended	WKLY AVG	report only	all year
001	Solids, total suspended	WKLY AVG	report only	all year
001	Solids, total suspended	WKLY AVG	report only	all year
001	Solids, total suspended	WKLY AVG	report only	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Solids, total suspended	WKLY AVG	report only	all year
001	Solids, total suspended	WKLY AVG	report only	all year
001	Solids, total suspended	WKLY AVG	report only	all year
001	Solids, total suspended	WKLY AVG	report only	all year
001	Nitrogen, ammonia total [as N]	MO AVG	<= 20 mg/L	Jan, Feb, Mar, Nov, Dec
001	Nitrogen, ammonia total [as N]	MO AVG	<= 20 mg/L	Jan, Feb, Mar, Nov, Dec
001	Nitrogen, ammonia total [as N]	MO AVG	<= 4 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, ammonia total [as N]	MO AVG	<= 4 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, ammonia total [as N]	MO AVG	<= 2.5 mg/L	all year
001	Nitrogen, ammonia total [as N]	MO AVG	<= 2.5 mg/L	all year
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 30 mg/L	Jan, Feb, Mar, Nov, Dec
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 30 mg/L	Jan, Feb, Mar, Nov, Dec
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 6 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 6 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 3.75 mg/L	all year
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 3.75 mg/L	all year
001	Nitrogen, ammonia total [as N]	MO AVG	<= 80 lb/d	Jan, Feb, Mar, Nov, Dec
001	Nitrogen, ammonia total [as N]	MO AVG	<= 160 lb/d	Jan, Feb, Mar, Nov, Dec
001	Nitrogen, ammonia total [as N]	MO AVG	<= 32 lb/d	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, ammonia total [as N]	MO AVG	<= 16 lb/d	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, ammonia total [as N]	MO AVG	<= 41.7 lb/d	all year
001	Nitrogen, ammonia total [as N]	MO AVG	<= 62.5 lb/d	all year
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 120 lb/d	Jan, Feb, Mar, Nov, Dec
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 240 lb/d	Jan, Feb, Mar, Nov, Dec
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 48 lb/d	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 24 lb/d	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 62.5 lb/d	all year
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 93.8 lb/d	all year
001	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
001	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
001	Nitrogen, Kjeldahl, total [as N]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, Kjeldahl, total [as N]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, Kjeldahl, total [as N]	WKLY AVG	report only	all year
001	Nitrogen, Kjeldahl, total [as N]	WKLY AVG	report only	all year
001	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
001	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
001	Nitrogen, Kjeldahl, total [as N]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, Kjeldahl, total [as N]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrogen, Kjeldahl, total [as N]	WKLY AVG	report only	all year
001	Nitrogen, Kjeldahl, total [as N]	WKLY AVG	report only	all year
001	Nitrite + Nitrate total [as N]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrite + Nitrate total [as N]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrite + Nitrate total [as N]	MO AVG	report only	all year
001	Nitrite + Nitrate total [as N]	MO AVG	report only	all year
001	Nitrite + Nitrate total [as N]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrite + Nitrate total [as N]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrite + Nitrate total [as N]	WKLY AVG	report only	all year
001	Nitrite + Nitrate total [as N]	WKLY AVG	report only	all year
001	Nitrite + Nitrate total [as N]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrite + Nitrate total [as N]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrite + Nitrate total [as N]	MO AVG	report only	all year
001	Nitrite + Nitrate total [as N]	MO AVG	report only	all year
001	Nitrite + Nitrate total [as N]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrite + Nitrate total [as N]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Nitrite + Nitrate total [as N]	WKLY AVG	report only	all year
001	Nitrite + Nitrate total [as N]	WKLY AVG	report only	all year
001	Phosphorus, total [as P]	MO AVG	report only	all year
001	Phosphorus, total [as P]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Phosphorus, total [as P]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Phosphorus, total [as P]	MO AVG	report only	all year
001	Phosphorus, total [as P]	WKLY AVG	report only	all year
001	Phosphorus, total [as P]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Phosphorus, total [as P]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Phosphorus, total [as P]	WKLY AVG	report only	all year
001	Phosphorus, total [as P]	MO AVG	report only	all year
001	Phosphorus, total [as P]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Phosphorus, total [as P]	MO AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Phosphorus, total [as P]	MO AVG	report only	all year
001	Phosphorus, total [as P]	WKLY AVG	report only	all year
001	Phosphorus, total [as P]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Phosphorus, total [as P]	WKLY AVG	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
001	Phosphorus, total [as P]	WKLY AVG	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Chlorine, total residual	MO AVG	<= .069 mg/L	all year
001	Chlorine, total residual	MO AVG	<= .128 mg/L	all year
001	Chlorine, total residual	MO AVG	<= .039 mg/L	all year
001	Chlorine, total residual	MO AVG	<= .03 mg/L	all year
001	Chlorine, total residual	DAILY MX	<= .12 mg/L	all year
001	Chlorine, total residual	DAILY MX	<= .22 mg/L	all year
001	Chlorine, total residual	DAILY MX	<= .067 mg/L	all year
001	Chlorine, total residual	DAILY MX	<= .051 mg/L	all year
001	E. coli	MO AVG	<= 126 #/100mL	May, Jun, Jul, Aug, Sep, Oct
001	E. coli	MO AVG	<= 548 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec
001	E. coli	MO AVG	<= 548 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec
001	E. coli	MO AVG	<= 548 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec
001	E. coli	MO AVG	<= 126 #/100mL	May, Jun, Jul, Aug, Sep, Oct
001	E. coli	MO AVG	<= 126 #/100mL	May, Jun, Jul, Aug, Sep, Oct
001	E. coli	MO AVG	<= 548 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec
001	E. coli	MO AVG	<= 126 #/100mL	May, Jun, Jul, Aug, Sep, Oct
001	E. coli	DAILY MX	<= 298 #/100mL	May, Jun, Jul, Aug, Sep, Oct
001	E. coli	DAILY MX	<= 2507 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec
001	E. coli	DAILY MX	<= 2507 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec
001	E. coli	DAILY MX	<= 2507 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec
001	E. coli	DAILY MX	<= 298 #/100mL	May, Jun, Jul, Aug, Sep, Oct
001	E. coli	DAILY MX	<= 298 #/100mL	May, Jun, Jul, Aug, Sep, Oct
001	E. coli	DAILY MX	<= 2507 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec
001	E. coli	DAILY MX	<= 298 #/100mL	May, Jun, Jul, Aug, Sep, Oct
001	Toxicity [chronic], Ceriodaphnia dubia	SINGSAMP	<= 0 pass=0;fail=1	Feb, May, Aug, Nov
001	Toxicity [chronic], Pimephales promelas [Fathead Minnow]	SINGSAMP	<= 0 pass=0;fail=1	Feb, May, Aug, Nov
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 13 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 13 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 25 mg/L	Jan, Feb, Mar, Nov, Dec
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 25 mg/L	Jan, Feb, Mar, Nov, Dec
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 8 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 8 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 19.5 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 19.5 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 37.5 mg/L	Jan, Feb, Mar, Nov, Dec
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 37.5 mg/L	Jan, Feb, Mar, Nov, Dec
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 12 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 12 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 52 lb/d	Apr, May, Jun, Jul, Aug, Sep, Oct
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 104 lb/d	Apr, May, Jun, Jul, Aug, Sep, Oct
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 200 lb/d	Jan, Feb, Mar, Nov, Dec
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 100 lb/d	Jan, Feb, Mar, Nov, Dec
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 200 lb/d	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 133 lb/d	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 78 lb/d	Apr, May, Jun, Jul, Aug, Sep, Oct
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 156 lb/d	Apr, May, Jun, Jul, Aug, Sep, Oct
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 300 lb/d	Jan, Feb, Mar, Nov, Dec
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 150 lb/d	Jan, Feb, Mar, Nov, Dec
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 300 lb/d	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 200 lb/d	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	report only	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	report only	all year
001	BOD, carb-5 day, 20 deg C, percent removal	MO AV MN	>= 85 %	all year
001	BOD, carb-5 day, 20 deg C, percent removal	MO AV MN	>= 85 %	all year
001	BOD, carb-5 day, 20 deg C, percent removal	MO AV MN	>= 85 %	all year
001	BOD, carb-5 day, 20 deg C, percent removal	MO AV MN	>= 85 %	all year
001	Solids, suspended percent removal	MO AV MN	>= 85 %	all year
001	Solids, suspended percent removal	MO AV MN	>= 85 %	all year
001	Solids, suspended percent removal	MO AV MN	>= 85 %	all year
001	Solids, suspended percent removal	MO AV MN	>= 85 %	all year
002	pH	DAILY MN	report only	all year
002	pH	DAILY MX	report only	all year
002	Solids, total suspended	DAILY MX	report only	all year
002	Oil & Grease	DAILY MX	<= 15 mg/L	all year
002	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
002	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
002	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	E. coli	DAILY MX	report only	all year
002	BOD, carbonaceous [5 day, 20 C]	DAILY MX	report only	all year