HOUSTON, CITY OF

NPDES permit TX0105058 · Major POTW · administratively continued, expires 2000-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
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 2000-05-31 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

0values over a limit
0required values missing, on 0 form(s)
0of 19 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among TX permits in EPA's filings — check your permit).

Limits in force (46)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO MIN >= 4 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended30DA AVG <= 15 mg/L all year
001Solids, total suspended7 DA AVG <= 25 mg/L all year
001Solids, total suspended30DA AVG <= 6755 lb/d all year
001Solids, total suspended30DA AVG report only all year
001Solids, total suspended7 DA AVG report only all year
001Solids, total suspended30DA AVG report only all year
001Nitrogen, ammonia total [as N]30DA AVG <= 3 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 5 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]7 DA AVG <= 6 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]7 DA AVG <= 10 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 1351 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 2252 lb/d Jan, Feb, Mar, Nov, Dec
001Nitrogen, Kjeldahl, total [as N]30DA AVG report only all year
001Nitrogen, Kjeldahl, total [as N]7 DA AVG report only all year
001Flow, in conduit or thru treatment plant30DA AVG report only all year
001Chlorine, total residualINST MAX <= .099 mg/L all year
001Chlorine, total residualMO MIN >= 1 mg/L all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 4504 lb/d all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG report only all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG report only all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG report only all year
001Solids, suspended percent removal30DA AVG report only all year
001Solids, suspended percent removal7 DA AVG report only all year
001Carbonaceous oxygen demand, % removal30DA AVG report only all year
001Carbonaceous oxygen demand, % removal7 DA AVG report only all year
TXCLow Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TXCLow Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
TXCLow Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TXCLow Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TXCNOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TXCNOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TXCNOEC Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TXCNOEC Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TXCNOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TXCNOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TXCNOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TXCNOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TXTLC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)2E report only all year
TXTLC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TXTLC50 Pass/Fail Static 24Hr Acute Cyprinodon variegatus2E report only all year
TXTLC50 Pass/Fail Static 24Hr Acute Cyprinodon variegatusMO AV MN report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states