CORIX UTILITIES, TEXAS, INC — NPDES permit TX0117609: limits, due date and EPA's record

NPDES permit TX0117609 · Minor POTW · expired, expires 2024-10-15 · EPA's file as of 2026-09-19

Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2024-10-15 and is expired: 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 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (19)

Outfall	Parameter	Statistic	Limit	Months
001	Oxygen, dissolved [DO]	MO MIN	>= 6 mg/L	all year
001	pH	MINIMUM	>= 6 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	Solids, total suspended	DAILY AV	<= 5 mg/L	all year
001	Solids, total suspended	SINGGRAB	<= 30 mg/L	all year
001	Solids, total suspended	DAILY AV	<= 2.1 lb/d	all year
001	Nitrogen, ammonia total [as N]	DAILY AV	<= 2 mg/L	all year
001	Nitrogen, ammonia total [as N]	SINGGRAB	<= 15 mg/L	all year
001	Nitrogen, ammonia total [as N]	DAILY AV	<= .83 lb/d	all year
001	Phosphorus, total [as P]	DAILY AV	<= 1 mg/L	all year
001	Phosphorus, total [as P]	SINGGRAB	<= 6 mg/L	all year
001	Phosphorus, total [as P]	DAILY AV	<= .42 lb/d	all year
001	Flow, in conduit or thru treatment plant	DAILY AV	<= .05 MGD	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	E. coli	DAILY AV	<= 126 CFU/100mL	all year
001	E. coli	SINGGRAB	<= 399 CFU/100mL	all year
001	BOD, carbonaceous [5 day, 20 C]	DAILY AV	<= 5 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	SINGGRAB	<= 30 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	DAILY AV	<= 2.1 lb/d	all year