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Trinity Bay Conservation District

Sewage treatment plant, major discharger, Winnie, Texas. NPDES permit TX0020460, in force until Feb 19, 2031. Last 12 months: over a limit 24 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (19 values), outfall TX1 form Q quarterly (12 values), outfall TXA form S twice a year
Last report on file
September 2026
Oct 2024 – Sep 2025
7 values over a limit, 0 required values missing, 0 of 18 reports late

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

All 24 values over a limit
Period endingParameterReportedLimitOver by
January 2026Nitrogen, ammonia total [as N], daily average13.4 mg/L≤ 12 mg/L12%
February 2026Nitrogen, ammonia total [as N], daily average13.4 mg/L≤ 12 mg/L12%
March 2026BOD, carbonaceous [5 day, 20 C], daily average17.6 mg/L≤ 10 mg/L76%
March 2026BOD, carbonaceous [5 day, 20 C], daily maximum28.6 mg/L≤ 25 mg/L14%
March 2026Solids, total suspended, daily average22.2 mg/L≤ 15 mg/L48%
April 2026BOD, carbonaceous [5 day, 20 C], daily average27.6 mg/L≤ 10 mg/L176%
April 2026BOD, carbonaceous [5 day, 20 C], daily maximum49.5 mg/L≤ 25 mg/L98%
April 2026Solids, total suspended, daily average39.8 mg/L≤ 15 mg/L165%
April 2026Solids, total suspended, daily maximum52 mg/L≤ 40 mg/L30%
May 2026BOD, carbonaceous [5 day, 20 C], daily average19.5 mg/L≤ 10 mg/L95%
May 2026BOD, carbonaceous [5 day, 20 C], daily maximum31.1 mg/L≤ 25 mg/L24%
May 2026E. coli, daily maximum548 CFU/100mL≤ 399 CFU/100mL37%
May 2026Solids, total suspended, daily average25.2 mg/L≤ 15 mg/L68%
June 2026BOD, carbonaceous [5 day, 20 C], daily average18.6 mg/L≤ 10 mg/L86%
July 2026BOD, carbonaceous [5 day, 20 C], daily average21.9 mg/L≤ 10 mg/L119%
July 2026BOD, carbonaceous [5 day, 20 C], daily maximum59.1 mg/L≤ 25 mg/L136%
July 2026E. coli, daily maximum1300 CFU/100mL≤ 399 CFU/100mL226%
August 2026BOD, carbonaceous [5 day, 20 C], daily average15.2 mg/L≤ 10 mg/L52%
August 2026BOD, carbonaceous [5 day, 20 C], daily maximum25.6 mg/L≤ 25 mg/L2%
August 2026E. coli, daily maximum770 CFU/100mL≤ 399 CFU/100mL93%
August 2026Solids, total suspended, daily average16.3 mg/L≤ 15 mg/L9%
September 2026BOD, carbonaceous [5 day, 20 C], daily average18.8 mg/L≤ 10 mg/L88%
September 2026BOD, carbonaceous [5 day, 20 C], daily maximum33.4 mg/L≤ 25 mg/L34%
September 2026Solids, total suspended, daily average21.1 mg/L≤ 15 mg/L41%

Limits in force (36)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimum≥ 5 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≤ 248 lb/dall year001
Nitrogen, ammonia total [as N]daily average≤ 10 mg/LApr–Sep001
Nitrogen, ammonia total [as N]daily average≤ 12 mg/LJan, Feb, Mar, Oct, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 50 mg/LApr–Sep001
Nitrogen, ammonia total [as N]daily maximum≤ 60 mg/LJan, Feb, Mar, Oct, Nov, Dec001
Nitrogen, ammonia total [as N]daily average≤ 165 lb/dApr–Sep001
Nitrogen, ammonia total [as N]daily average≤ 198 lb/dJan, Feb, Mar, Oct, 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 plantannual average≤ 1.98 MGDall year001
Chlorine, total residualinstantaneous maximum< .1 mg/Lall year001
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year001
E. colidaily average≤ 126 CFU/100mLall year001
E. colidaily maximum≤ 399 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≤ 165 lb/dall year001
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48-hour minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexmonthly average minimumreport only (pass=0;fail=1)all yearTX1
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48-hour minimumreport only (pass=0;fail=1)all yearTX1
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48-hour minimumreport only (%)all yearTX1
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexmonthly average minimumreport only (%)all yearTX1
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48-hour minimumreport only (%)all yearTX1
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasmonthly average minimumreport only (%)all yearTX1
LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex48-hour minimumreport only (%)all yearTX1
LOAEC Lethal Static Renewal 48HR Acute Daphnia pulexmonthly average minimumreport only (%)all yearTX1
LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas48-hour minimumreport only (%)all yearTX1
LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelasmonthly average minimumreport only (%)all yearTX1
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/TX0020460 · MCP: https://passage-data.com/mcp