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Houston, City of

Sewage treatment plant, major discharger, Houston, Texas. NPDES permit TX0062995, in force until Sep 8, 2027. Last 12 months: over a limit 25 times (last September 2026), 1 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (20 values), outfall TX1 form Q quarterly (14 values), outfall TX1 form Y yearly, outfall TXA form S twice a year
Renewal application due
Mar 12, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
17 values over a limit, 8 required values missing, 1 of 19 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 25 values over a limit
Period endingParameterReportedLimitOver by
November 2025Nitrogen, ammonia total [as N], daily maximum9 mg/L≤ 8 mg/L13%
December 2025Nitrogen, ammonia total [as N], daily maximum10 mg/L≤ 8 mg/L25%
February 2026Nitrogen, ammonia total [as N], daily average5 mg/L≤ 4 mg/L25%
February 2026Nitrogen, ammonia total [as N], daily maximum12 mg/L≤ 8 mg/L50%
March 2026Nitrogen, ammonia total [as N], daily average2192 lb/d≤ 2002 lb/d9%
March 2026Nitrogen, ammonia total [as N], daily average7 mg/L≤ 4 mg/L75%
March 2026Nitrogen, ammonia total [as N], daily maximum13 mg/L≤ 8 mg/L63%
March 2026Solids, total suspended, daily maximum60 mg/L≤ 40 mg/L50%
April 2026Nitrogen, ammonia total [as N], daily average1670 lb/d≤ 1501 lb/d11%
April 2026Nitrogen, ammonia total [as N], daily average6 mg/L≤ 3 mg/L100%
May 2026Nitrogen, ammonia total [as N], daily average1694 lb/d≤ 1501 lb/d13%
May 2026Nitrogen, ammonia total [as N], daily average5 mg/L≤ 3 mg/L67%
May 2026Solids, total suspended, daily maximum150 mg/L≤ 40 mg/L275%
June 2026E. coli, daily maximum313 MPN/100mL≤ 200 CFU/100mL57%
June 2026Nitrogen, ammonia total [as N], daily average1587 lb/d≤ 1501 lb/d6%
June 2026Nitrogen, ammonia total [as N], daily average5 mg/L≤ 3 mg/L67%
June 2026Solids, total suspended, daily maximum46 mg/L≤ 40 mg/L15%
July 2026Nitrogen, ammonia total [as N], daily average1964 lb/d≤ 1501 lb/d31%
July 2026Nitrogen, ammonia total [as N], daily average6 mg/L≤ 3 mg/L100%
July 2026Nitrogen, ammonia total [as N], daily maximum13 mg/L≤ 10 mg/L30%
August 2026E. coli, daily maximum> 2420 MPN/100mL≤ 200 CFU/100mL—
August 2026Nitrogen, ammonia total [as N], daily average5 mg/L≤ 3 mg/L67%
September 2026Nitrogen, ammonia total [as N], daily average1691 lb/d≤ 1501 lb/d13%
September 2026Nitrogen, ammonia total [as N], daily average6 mg/L≤ 3 mg/L100%
September 2026Nitrogen, ammonia total [as N], daily maximum11 mg/L≤ 10 mg/L10%

Limits in force (53)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/Lall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily average≤ 15 mg/Lall year001
Solids, total suspendeddaily maximum≤ 40 mg/Lall year001
Solids, total suspendeddaily average≤ 7506 lb/dall year001
Nitrogen, ammonia total [as N]daily average≤ 3 mg/LApr–Oct001
Nitrogen, ammonia total [as N]daily average≤ 4 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/LApr–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 8 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]daily average≤ 1501 lb/dApr–Oct001
Nitrogen, ammonia total [as N]daily average≤ 2002 lb/dJan, Feb, Mar, Nov, Dec001
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plant2-hour peak≤ 125000 gal/minall year001
Flow, in conduit or thru treatment plantannual average≤ 60 MGDall year001
Chlorine, total residualinstantaneous maximum< .1 mg/Lall year001
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year001
E. colidaily average≤ 63 CFU/100mLall year001
E. colidaily maximum≤ 200 CFU/100mLall year001
BOD, carbonaceous [5 day, 20 C]daily average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily average≤ 5004 lb/dall year001
Whole effluent toxicity - retest #17-day minimumreport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #17-day minimumreport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #27-day minimumreport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #27-day minimumreport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all yearTX1
Whole Effluent Toxicity [WET] - C. dubia7-day minimum≥ 66 %all yearTX1
Whole Effluent Toxicity [WET] - C. dubiamonthly average minimum≥ 66 %all yearTX1
IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX1
IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX1
IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
Whole effluent toxicity - retest #1single samplereport only (pass=0;fail=1)all yearTXA
Whole effluent toxicity - retest #2single samplereport only (pass=0;fail=1)all yearTXA
LC50 Pass/Fail Static 24Hr Acute D. Pulexsingle samplereport only (pass=0;fail=1)all yearTXA
LC50 Pass/Fail Static 24Hr Acute Pimephales promelassingle samplereport only (pass=0;fail=1)all yearTXA

How strict are these limits?

Cited limits by parameter: Texas's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0062995 · MCP: https://passage-data.com/mcp