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Haughton Town of - Wastewater Treatment Facility

Sewage treatment plant, major discharger, Haughton, Louisiana. NPDES permit LA0041386, in force until Sep 30, 2031. Last 12 months: over a limit 19 times (last August 2026), 10 of 20 reports late. Source: EPA ECHO, Oct 22, 2026.

Last report on file
August 2026
Oct 2024 – Sep 2025
21 values over a limit, 14 required values missing, 7 of 24 reports late

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

All 19 values over a limit
Period endingParameterReportedLimitOver by
November 2025Chlorine, total residual, instantaneous maximum.05 mg/L≤ .033 mg/L52%
December 2025Chlorine, total residual, instantaneous maximum.37 mg/L≤ .033 mg/L1021%
December 2025pH, instantaneous maximum8.73 SU≤ 8.5 SU—
January 2026Chlorine, total residual, instantaneous maximum.14 mg/L≤ .033 mg/L324%
January 2026pH, instantaneous maximum8.99 SU≤ 8.5 SU—
February 2026Nitrogen, ammonia total [as N], monthly average3.21 mg/L≤ 3 mg/L7%
March 2026Cyanide, total [as CN], monthly average< .05 lb/d≤ .04 lb/d25%
June 2026Chlorine, total residual, instantaneous maximum.14 mg/L≤ .033 mg/L324%
June 2026Coliform, fecal general, monthly geometric mean320 #/100mL≤ 200 #/100mL60%
June 2026Coliform, fecal general, weekly geometric mean> 1600 #/100mL≤ 400 #/100mL—
June 2026Solids, total suspended, monthly average12.7 mg/L≤ 10 mg/L27%
July 2026Chlorine, total residual, instantaneous maximum1.2 mg/L≤ .033 mg/L3536%
July 2026Coliform, fecal general, monthly geometric mean314 #/100mL≤ 200 #/100mL57%
July 2026Coliform, fecal general, weekly geometric mean4295 #/100mL≤ 400 #/100mL974%
July 2026Solids, total suspended, monthly average10.9 mg/L≤ 10 mg/L9%
August 2026Chlorine, total residual, instantaneous maximum.21 mg/L≤ .033 mg/L536%
August 2026Coliform, fecal general, monthly geometric mean1219 #/100mL≤ 200 #/100mL510%
August 2026Coliform, fecal general, weekly geometric mean2850 #/100mL≤ 400 #/100mL613%
August 2026Nitrogen, ammonia total [as N], monthly average3.77 mg/L≤ 3 mg/L26%

Limits in force (53)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 6 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 10 mg/Lall year
Solids, total suspendedweekly average≤ 15 mg/Lall year
Solids, total suspendedmonthly average≤ 100 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]weekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 6 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 30 lb/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Cyanide, total [as CN]monthly averagereport only (mg/L)all year
Cyanide, total [as CN]weekly averagereport only (mg/L)all year
Cyanide, total [as CN]monthly average≤ .04 lb/dall year
Cyanide, total [as CN]weekly average≤ .09 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall year
Whole Effluent Toxicity [WET] - C. dubia7-day minimum≥ 95 %all year
Whole Effluent Toxicity [WET] - C. dubiamonthly average minimum≥ 95 %all year
Whole Effluent Toxicity [WET] - P. promelas7-day minimum≥ 95 %all year
Whole Effluent Toxicity [WET] - P. promelasmonthly average minimum≥ 95 %all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 100 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (mg/L)all year
BOD, carbonaceous, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all year
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all year
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all year
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all year
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all year
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all year
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all year
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all year
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all year
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all year
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all year
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all year
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all year
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all year
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiamaximumreport only (%)all year
Coef Of Var Static Renewal 7Day Chronic Pimephales promelasmaximumreport only (%)all year

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

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