MINERAL SPRINGS, CITY OF — NPDES permit AR0021261: limits, due date and EPA's record

NPDES permit AR0021261 · Minor POTW · administratively continued, expires 2025-09-30 · EPA's file as of 2026-09-19

This permit expired on 2025-09-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (18)

Outfall	Parameter	Statistic	Limit	Months
002	Oxygen, dissolved [DO]	INST MIN	>= 4 mg/L	May, Jun, Jul, Aug, Sep, Oct
002	Oxygen, dissolved [DO]	INST MIN	>= 2 mg/L	Jan, Feb, Mar, Apr, Nov, Dec
002	BOD, 5-day, 20 deg. C	MO AVG	<= 30 mg/L	all year
002	BOD, 5-day, 20 deg. C	7 DA AVG	<= 45 mg/L	all year
002	BOD, 5-day, 20 deg. C	MO AVG	<= 50 lb/d	all year
002	pH	MINIMUM	>= 6 SU	all year
002	pH	MAXIMUM	<= 10 SU	all year
002	Solids, total suspended	MO AVG	<= 45 mg/L	all year
002	Solids, total suspended	7 DA AVG	<= 65 mg/L	all year
002	Solids, total suspended	MO AVG	<= 150.1 lb/d	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	Coliform, fecal general	30DA GEO	<= 200 #/100mL	May, Jun, Jul, Aug, Sep
002	Coliform, fecal general	30DA GEO	<= 1000 #/100mL	Jan, Feb, Mar, Apr, Oct, Nov, Dec
002	Coliform, fecal general	7 DA GEO	<= 400 #/100mL	May, Jun, Jul, Aug, Sep
002	Coliform, fecal general	7 DA GEO	<= 2000 #/100mL	Jan, Feb, Mar, Apr, Oct, Nov, Dec
002	Overflows	MO TOTAL	report only	all year
002	Overflow volume [SS0 volume, CSO volume]	MO TOTAL	report only	all year