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Elgin, City of

Sewage treatment plant, major discharger, Elgin, Texas. NPDES permit TX0073946, in force until Mar 25, 2030. Last 12 months: over a limit 14 times (last June 2026), 3 of 17 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (23 values), outfall TX1 form Q quarterly (16 values), outfall TXA form S twice a year
Last report on file
September 2026
Oct 2024 – Sep 2025
26 values over a limit, 23 required values missing, 4 of 14 reports late

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

All 14 values over a limit
Period endingParameterReportedLimitOver by
November 2025Nitrogen, ammonia total [as N], daily average2.183 mg/L≤ 2 mg/L9%
November 2025pH, minimum5 SU≥ 6 SU—
December 2025Nitrogen, ammonia total [as N], daily average4.902 mg/L≤ 2 mg/L145%
December 2025Nitrogen, ammonia total [as N], daily average46.897 lb/d≤ 33 lb/d42%
March 2026BOD, carbonaceous [5 day, 20 C], daily average5.143 mg/L≤ 5 mg/L3%
March 2026E. coli, daily maximum2420 CFU/100mL≤ 399 CFU/100mL507%
March 2026Nitrogen, ammonia total [as N], daily average128.66 lb/d≤ 33 lb/d290%
March 2026Nitrogen, ammonia total [as N], daily average13.36 mg/L≤ 2 mg/L568%
March 2026Nitrogen, ammonia total [as N], daily maximum31 mg/L≤ 10 mg/L210%
April 2026Chlorine, total residual, instantaneous maximum.15 mg/L≤ .1 mg/L50%
April 2026Chlorine, total residual, monthly minimum.07 mg/L≥ 1 mg/L93%
May 2026Chlorine, total residual, monthly minimum.1 mg/L≥ 1 mg/L90%
May 2026Flow, in conduit or thru treatment plant, 2-hour peak5000 gal/min≤ 4458 gal/min12%
June 2026Flow, in conduit or thru treatment plant, 2-hour peak5000 gal/min≤ 4458 gal/min12%

Limits in force (43)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/Lall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily average≤ 5 mg/Lall year001
Solids, total suspendeddaily maximum≤ 20 mg/Lall year001
Solids, total suspendeddaily average≤ 83 lb/dall year001
Nitrogen, ammonia total [as N]daily average≤ 2 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]daily average≤ 33 lb/dall year001
Phosphorus, total [as P]daily average≤ 1 mg/Lall year001
Phosphorus, total [as P]daily maximum≤ 4 mg/Lall year001
Phosphorus, total [as P]daily average≤ 17 lb/dall year001
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≤ 4458 gal/minall year001
Flow, in conduit or thru treatment plantannual average≤ 2 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≤ 5 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily average≤ 83 lb/dall year001
Whole effluent toxicity - retest #148-hour 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 #248-hour minimumreport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all yearTX1
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
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/TX0073946 · MCP: https://passage-data.com/mcp