LEWISTON CITY LE — NPDES permit UT0020214: limits, due date and EPA's record

NPDES permit UT0020214 · Minor 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 (read off this permit's own late-day counts in EPA's filings).

Limits in force (25)

Outfall	Parameter	Statistic	Limit	Months
001	Oxygen, dissolved [DO]	DAILY MN	>= 5 mg/L	all year
001	BOD, 5-day, 20 deg. C	MX MO AV	<= 25 mg/L	all year
001	BOD, 5-day, 20 deg. C	MX WK AV	<= 35 mg/L	all year
001	BOD, 5-day, 20 deg. C	30DA AVG	report only	all year
001	pH	DAILY MN	>= 6.5 SU	all year
001	pH	DAILY MX	<= 9 SU	all year
001	Solids, total suspended	MX MO AV	<= 25 mg/L	all year
001	Solids, total suspended	MX WK AV	<= 35 mg/L	all year
001	Solids, total suspended	30DA AVG	report only	all year
001	Oil & Grease	DAILY MX	<= 10 mg/L	all year
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 10 mg/L	all year
001	Nitrogen, Kjeldahl, total [as N]	30DA AVG	report only	all year
001	Nitrogen, Kjeldahl, total [as N]	30DA AVG	report only	all year
001	Phosphorus, total [as P]	30DA AVG	report only	all year
001	Phosphorus, total [as P]	30DA AVG	report only	all year
001	Phosphate, ortho [as P]	30DA AVG	report only	all year
001	Flow, in conduit or thru treatment plant	30DA AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	<= 1 MGD	all year
001	Chlorine, total residual	DAILY MX	<= .05 mg/L	all year
001	E. coli	MX MO AV	<= 126 #/100mL	all year
001	E. coli	MX WK AV	<= 157 #/100mL	all year
001	Nitrogen, nitrate total [as NO3]	30DA AVG	report only	all year
001	Nitrogen, nitrite total [as NO2]	30DA AVG	report only	all year
001	BOD, 5-day, percent removal	MN % RMV	>= 85 %	all year
001	Solids, suspended percent removal	MN % RMV	>= 85 %	all year