Solid Waste Disposal Authority of the Cities of Muscle Shoals, Sheffield, and Tu — NPDES permit AL0084464: limits, due date and EPA's record

NPDES permit AL0084464 · Minor NON-POTW · effective, expires 2027-12-31 · 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: Solids, total suspended (9), Nitrogen, ammonia total [as N] (9), Toxicity [chronic], Pimephales promelas [Fathead Minnow] (1).

Reporting

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

Limits in force (83)

Outfall	Parameter	Statistic	Limit	Months
002	Oxygen, dissolved [DO]	DAILY MN	>= 6 mg/L	all year
002	BOD, 5-day, 20 deg. C	MO AVG	<= 37 mg/L	Jan, Feb, Mar, Nov, Dec
002	BOD, 5-day, 20 deg. C	DAILY MX	<= 140 mg/L	Jan, Feb, Mar, Nov, Dec
002	pH	DAILY MN	>= 6 SU	all year
002	pH	DAILY MX	<= 8.5 SU	all year
002	Solids, total suspended	MO AVG	<= 27 mg/L	all year
002	Solids, total suspended	DAILY MX	<= 88 mg/L	all year
002	Oil & Grease	MO AVG	report only	all year
002	Oil & Grease	DAILY MX	<= 15 mg/L	all year
002	Nitrogen, ammonia total [as N]	MO AVG	<= 4.9 mg/L	Jan, Feb, Mar, Nov, Dec
002	Nitrogen, ammonia total [as N]	MO AVG	<= 3 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 10 mg/L	Jan, Feb, Mar, Nov, Dec
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 10 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
002	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
002	Nitrite + Nitrate total [as N]	DAILY MX	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
002	Phosphorus, total [as P]	DAILY MX	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
002	Carbon, tot organic [TOC]	MO AVG	report only	all year
002	Carbon, tot organic [TOC]	DAILY MX	report only	all year
002	Arsenic, total recoverable	DAILY MX	report only	all year
002	Zinc, total [as Zn]	MO AVG	<= .11 mg/L	all year
002	Zinc, total [as Zn]	DAILY MX	<= .2 mg/L	all year
002	Cadmium, total recoverable	DAILY MX	report only	all year
002	Chromium, total recoverable	DAILY MX	report only	all year
002	Copper, total recoverable	DAILY MX	report only	all year
002	Phenols	MO AVG	<= .015 mg/L	all year
002	Phenols	DAILY MX	<= .026 mg/L	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Perfluorooctanoic acid (PFOA)	SINGSAMP	report only	all year
002	Perfluorobutanoic acid (PFBA)	SINGSAMP	report only	all year
002	Perfluorooctanesulfonamide (PFOSA)	SINGSAMP	report only	all year
002	Perfluoropentanoic acid (PFPeA)	SINGSAMP	report only	all year
002	Perfluorohexanoic acid (PFHxA)	SINGSAMP	report only	all year
002	Perfluoroheptanoic acid (PFHpA)	SINGSAMP	report only	all year
002	Perfluorononanoic acid (PFNA)	SINGSAMP	report only	all year
002	Perfluorodecanoic acid (PFDA)	SINGSAMP	report only	all year
002	Perfluoroundecanoic acid (PFUnA)	SINGSAMP	report only	all year
002	Perfluorododecanoic acid (PFDoA)	SINGSAMP	report only	all year
002	Perfluorotridecanoic acid (PFTrDA)	SINGSAMP	report only	all year
002	Perfluorotetradecanoic acid (PFTeDA)	SINGSAMP	report only	all year
002	N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)	SINGSAMP	report only	all year
002	N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)	SINGSAMP	report only	all year
002	N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)	SINGSAMP	report only	all year
002	N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)	SINGSAMP	report only	all year
002	Perfluorobutanesulfonic acid (PFBS)	SINGSAMP	report only	all year
002	Perfluorodecanesulfonic acid (PFDS)	SINGSAMP	report only	all year
002	Perfluoroheptanesulfonic acid (PFHpS)	SINGSAMP	report only	all year
002	Perfluorohexanesulfonic acid (PFHxS)	SINGSAMP	report only	all year
002	Perfluorooctanesulfonic acid (PFOS)	SINGSAMP	report only	all year
002	1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)	SINGSAMP	report only	all year
002	1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)	SINGSAMP	report only	all year
002	1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)	SINGSAMP	report only	all year
002	Perfluoropentanesulfonic acid (PFPeS)	SINGSAMP	report only	all year
002	Perfluorononanesulfonic acid (PFNS)	SINGSAMP	report only	all year
002	Hexafluoropropylene oxide dimer acid (HFPO-DA)	SINGSAMP	report only	all year
002	Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)	SINGSAMP	report only	all year
002	Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)	SINGSAMP	report only	all year
002	Perfluorododecanesulfonic acid (PFDoS)	SINGSAMP	report only	all year
002	4,8-Dioxa-3H-perfluorononanoic acid (ADONA)	SINGSAMP	report only	all year
002	N-methyl perfluorooctanesulfonamide (NMeFOSA)	SINGSAMP	report only	all year
002	N-ethyl perfluorooctanesulfonamide (NEtFOSA)	SINGSAMP	report only	all year
002	Toxicity [chronic], Ceriodaphnia dubia	DAILY MX	<= 0 pass=0;fail=1	all year
002	Toxicity [chronic], Pimephales promelas [Fathead Minnow]	DAILY MX	<= 0 pass=0;fail=1	all year
002	Solids, total dissolved	MO AVG	report only	all year
002	Solids, total dissolved	DAILY MX	report only	all year
002	Mercury, total recoverable	DAILY MX	report only	all year
002	p-Cresol	MO AVG	<= .014 mg/L	all year
002	p-Cresol	DAILY MX	<= .025 mg/L	all year
002	Benzoic acids, total	MO AVG	<= .071 mg/L	all year
002	Benzoic acids, total	DAILY MX	<= .12 mg/L	all year
002	.alpha.-Terpineol	MO AVG	<= .016 mg/L	all year
002	.alpha.-Terpineol	DAILY MX	<= .033 mg/L	all year
002	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 23 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
002	BOD, carbonaceous [5 day, 20 C]	DAILY MX	<= 34.5 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
002	Chemical Oxygen Demand [COD]	MO AVG	report only	all year
002	Chemical Oxygen Demand [COD]	DAILY MX	report only	all year
002	3-Perfluoropropyl propanoic acid (3:3 FTCA)	SINGSAMP	report only	all year
002	Perfluoro-3-methoxypropanoic acid (PFMPA)	SINGSAMP	report only	all year
002	9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)	SINGSAMP	report only	all year
002	11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)	SINGSAMP	report only	all year
002	3-Perfluoroheptyl propanoic acid (7:3 FTCA)	SINGSAMP	report only	all year
002	Perfluoro-4-methoxybutanoic acid (PFMBA)	SINGSAMP	report only	all year
002	2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)	SINGSAMP	report only	all year