PAMPLICO TOWN OF — NPDES permit SC0021351: limits, due date and EPA's record

NPDES permit SC0021351 · Minor POTW · administratively continued, expires 2023-12-31 · EPA's file as of 2026-09-19

This permit expired on 2023-12-31 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

Last period with anything received: 2026-07-31. Most often over: E. coli (9), Oxygen demand, ultimate (5), BOD, 5-day, percent removal (4).

Reporting

Reports are due about 29 days after each monitoring period ends (the most common figure among SC permits in EPA's filings — check your permit).

Limits in force (41)

Outfall	Parameter	Statistic	Limit	Months
002	Oxygen demand, ultimate	MO AVG	<= 160 lb/d	all year
002	Oxygen demand, ultimate	WKLY AVG	<= 160 lb/d	all year
002	Oxygen, dissolved [DO]	MINIMUM	>= 6 mg/L	all year
002	BOD, 5-day, 20 deg. C	MO AVG	<= 30 mg/L	all year
002	BOD, 5-day, 20 deg. C	WKLY AVG	<= 45 mg/L	all year
002	BOD, 5-day, 20 deg. C	MO AVG	<= 75 lb/d	all year
002	BOD, 5-day, 20 deg. C	WKLY AVG	<= 113 lb/d	all year
002	pH	MINIMUM	>= 6 SU	all year
002	pH	MAXIMUM	<= 8.5 SU	all year
002	Solids, total suspended	MO AVG	<= 30 mg/L	all year
002	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
002	Solids, total suspended	MO AVG	<= 75 lb/d	all year
002	Solids, total suspended	WKLY AVG	<= 113 lb/d	all year
002	Nitrogen, total [as N]	MO AVG	report only	all year
002	Nitrogen, total [as N]	WKLY AVG	report only	all year
002	Nitrogen, total [as N]	MO AVG	report only	all year
002	Nitrogen, total [as N]	WKLY AVG	report only	all year
002	Nitrogen, ammonia total [as N]	MO AVG	report only	Jan, Feb, Nov, Dec
002	Nitrogen, ammonia total [as N]	MO AVG	<= 13.4 mg/L	Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
002	Nitrogen, ammonia total [as N]	WKLY AVG	report only	Jan, Feb, Nov, Dec
002	Nitrogen, ammonia total [as N]	WKLY AVG	<= 20.1 mg/L	Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
002	Nitrogen, ammonia total [as N]	MO AVG	report only	Jan, Feb, Nov, Dec
002	Nitrogen, ammonia total [as N]	MO AVG	<= 33.5 lb/d	Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
002	Nitrogen, ammonia total [as N]	WKLY AVG	report only	Jan, Feb, Nov, Dec
002	Nitrogen, ammonia total [as N]	WKLY AVG	<= 50.3 lb/d	Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
002	Phosphorus, total [as P]	MO AVG	report only	all year
002	Phosphorus, total [as P]	WKLY AVG	report only	all year
002	Phosphorus, total [as P]	MO AVG	report only	all year
002	Phosphorus, total [as P]	WKLY AVG	report only	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	Flow, in conduit or thru treatment plant	WKLY AVG	report only	all year
002	Chlorine, total residual	MO AVG	<= .5 mg/L	all year
002	Chlorine, total residual	DAILY MX	<= 1 mg/L	all year
002	Chlorine, total residual	MO AVG	<= 1.25 lb/d	all year
002	Chlorine, total residual	DAILY MX	<= 2.5 lb/d	all year
002	E. coli	30DAVGEO	<= 126 MPN/100mL	all year
002	E. coli	DAILY MX	<= 349 MPN/100mL	all year
002	E. coli	30DAVGEO	<= 126 MPN/100mL	all year
002	E. coli	DAILY MX	<= 800 MPN/100mL	all year
002	BOD, 5-day, percent removal	MO AV MN	>= 85 %	all year
002	Solids, suspended percent removal	MO AV MN	>= 85 %	all year