Tangipahoa Parish Regional Solid Waste Facility — NPDES permit LA0078921: limits, due date and EPA's record

Sewage treatment plant, Independence, Louisiana. NPDES permit LA0078921, in force until Dec 31, 2030. Last 12 months: over a limit 26 times (last September 2026), 2 required values missing. Source: EPA ECHO, Oct 22, 2026.

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

Limits in force (119)

Period ending	Outfall	Parameter	Reported	Limit	Over by
November 2025	103	BOD, 5-day, 20 deg. C, daily maximum	181 mg/L	≤ 140 mg/L	29%
November 2025	103	BOD, 5-day, 20 deg. C, monthly average	181 mg/L	≤ 37 mg/L	389%
November 2025	103	Nitrogen, ammonia total [as N], daily maximum	18.5 mg/L	≤ 10 mg/L	85%
November 2025	103	Nitrogen, ammonia total [as N], monthly average	18.5 mg/L	≤ 4.9 mg/L	278%
November 2025	103	Solids, total suspended, daily maximum	280 mg/L	≤ 88 mg/L	218%
November 2025	103	Solids, total suspended, monthly average	280 mg/L	≤ 27 mg/L	937%
December 2025	103	BOD, 5-day, 20 deg. C, monthly average	118 mg/L	≤ 37 mg/L	219%
December 2025	103	Nitrogen, ammonia total [as N], monthly average	9.3 mg/L	≤ 4.9 mg/L	90%
December 2025	103	Solids, total suspended, daily maximum	158 mg/L	≤ 88 mg/L	80%
December 2025	103	Solids, total suspended, monthly average	158 mg/L	≤ 27 mg/L	485%
March 2026	203	Coliform, fecal general, daily maximum	700 #/100mL	≤ 400 #/100mL	75%
March 2026	203	Coliform, fecal general, monthly geometric mean	700 #/100mL	≤ 200 #/100mL	250%
March 2026	203	Nitrogen, ammonia total [as N], monthly average	7 mg/L	≤ 4.9 mg/L	43%
March 2026	203	Solids, total suspended, monthly average	32.5 mg/L	≤ 27 mg/L	20%
May 2026	203	Coliform, fecal general, daily maximum	630 #/100mL	≤ 400 #/100mL	58%
May 2026	203	Coliform, fecal general, monthly geometric mean	317.5 #/100mL	≤ 200 #/100mL	59%
May 2026	203	Nitrogen, ammonia total [as N], daily maximum	34.2 mg/L	≤ 10 mg/L	242%
May 2026	203	Nitrogen, ammonia total [as N], monthly average	23.49 mg/L	≤ 4.9 mg/L	379%
June 2026	203	Coliform, fecal general, daily maximum	625 #/100mL	≤ 400 #/100mL	56%
June 2026	203	Coliform, fecal general, monthly geometric mean	625 #/100mL	≤ 200 #/100mL	213%
June 2026	203	Nitrogen, ammonia total [as N], daily maximum	18.3 mg/L	≤ 10 mg/L	83%
June 2026	203	Nitrogen, ammonia total [as N], monthly average	18.3 mg/L	≤ 4.9 mg/L	273%
June 2026	203	Solids, total suspended, monthly average	27.3 mg/L	≤ 27 mg/L	1%
September 2026	003	pH, daily maximum	10.8 SU	≤ 9 SU	—
September 2026	203	Solids, total suspended, monthly average	30 mg/L	≤ 27 mg/L	11%
September 2026	203	pH, instantaneous maximum	9.7 SU	≤ 9 SU	—

Parameter	Statistic	Limit	Months	Outfall
pH	instantaneous minimum	≥ 6 SU	all year	001
pH	instantaneous maximum	≤ 9 SU	all year	001
Solids, total suspended	daily maximum	report only (mg/L)	all year	001
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	001
Oil and grease	daily maximum	≤ 15 mg/L	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous maximum	≤ 9 SU	all year	002
Solids, total suspended	daily maximum	report only (mg/L)	all year	002
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	002
Oil and grease	daily maximum	≤ 15 mg/L	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	003
pH	daily maximum	≤ 9 SU	all year	003
Solids, total suspended	daily maximum	report only (mg/L)	all year	003
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	003
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	003
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	003
Oil and grease	daily maximum	≤ 15 mg/L	all year	003
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
BOD, 5-day, 20 deg. C	monthly average	≤ 37 mg/L	all year	004
BOD, 5-day, 20 deg. C	daily maximum	≤ 140 mg/L	all year	004
pH	instantaneous minimum	≥ 6 SU	all year	004
pH	instantaneous maximum	≤ 9 SU	all year	004
Solids, total suspended	monthly average	≤ 27 mg/L	all year	004
Solids, total suspended	daily maximum	≤ 88 mg/L	all year	004
Nitrogen, ammonia total [as N]	monthly average	≤ 4.9 mg/L	all year	004
Nitrogen, ammonia total [as N]	daily maximum	≤ 10 mg/L	all year	004
Zinc, total [as Zn]	monthly average	≤ .087 mg/L	all year	004
Zinc, total [as Zn]	daily maximum	≤ .2 mg/L	all year	004
Phenol	monthly average	≤ .015 mg/L	all year	004
Phenol	daily maximum	≤ .026 mg/L	all year	004
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	004
Flow, in conduit or thru treatment plant	weekly average	report only (MGD)	all year	004
.alpha.-Terpineol	monthly average	≤ .016 mg/L	all year	004
.alpha.-Terpineol	daily maximum	≤ .033 mg/L	all year	004
Priority pollutants scan [yes/no]	minimum	≥ 1 N=0;Y=1	all year	004
Mercury, total [as Hg]	monthly average	report only (mg/L)	all year	004
Mercury, total [as Hg]	daily maximum	report only (mg/L)	all year	004
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	004
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	004
p-Cresol	monthly average	≤ .014 mg/L	all year	004
p-Cresol	daily maximum	≤ .025 mg/L	all year	004
Benzoic acids, total	monthly average	≤ .071 mg/L	all year	004
Benzoic acids, total	daily maximum	≤ .12 mg/L	all year	004
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	005
BOD, 5-day, 20 deg. C	daily maximum	≤ 45 mg/L	all year	005
pH	instantaneous minimum	≥ 6 SU	all year	005
pH	instantaneous maximum	≤ 9 SU	all year	005
Solids, total suspended	monthly average	≤ 30 mg/L	all year	005
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	005
Nitrogen, total [as N]	monthly average	report only (mg/L)	all year	005
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	005
Phosphorus, total [as P]	monthly average	report only (mg/L)	all year	005
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	005
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	005
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	005
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	005
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	005
pH	instantaneous minimum	≥ 6 SU	all year	006
pH	instantaneous maximum	≤ 9 SU	all year	006
Solids, total suspended	daily maximum	report only (mg/L)	all year	006
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	006
Oil and grease	daily maximum	≤ 15 mg/L	all year	006
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	006
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	006
BOD, 5-day, 20 deg. C	monthly average	≤ 37 mg/L	all year	103
BOD, 5-day, 20 deg. C	daily maximum	≤ 140 mg/L	all year	103
pH	instantaneous minimum	≥ 6 SU	all year	103
pH	instantaneous maximum	≤ 9 SU	all year	103
Solids, total suspended	monthly average	≤ 27 mg/L	all year	103
Solids, total suspended	daily maximum	≤ 88 mg/L	all year	103
Nitrogen, ammonia total [as N]	monthly average	≤ 4.9 mg/L	all year	103
Nitrogen, ammonia total [as N]	daily maximum	≤ 10 mg/L	all year	103
Zinc, total [as Zn]	monthly average	≤ .087 mg/L	all year	103
Zinc, total [as Zn]	daily maximum	≤ .2 mg/L	all year	103
Phenol	monthly average	≤ .015 mg/L	all year	103
Phenol	daily maximum	≤ .026 mg/L	all year	103
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	103
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	103
.alpha.-Terpineol	monthly average	≤ .016 mg/L	all year	103
.alpha.-Terpineol	daily maximum	≤ .033 mg/L	all year	103
Priority pollutants scan [yes/no]	minimum	≥ 1 N=0;Y=1	all year	103
Mercury, total [as Hg]	monthly average	report only (mg/L)	all year	103
Mercury, total [as Hg]	daily maximum	report only (mg/L)	all year	103
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	103
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	103
p-Cresol	monthly average	≤ .014 mg/L	all year	103
p-Cresol	daily maximum	≤ .025 mg/L	all year	103
Benzoic acids, total	monthly average	≤ .071 mg/L	all year	103
Benzoic acids, total	daily maximum	≤ .12 mg/L	all year	103
BOD, 5-day, 20 deg. C	monthly average	≤ 37 mg/L	all year	203
BOD, 5-day, 20 deg. C	daily maximum	≤ 140 mg/L	all year	203
pH	instantaneous minimum	≥ 6 SU	all year	203
pH	instantaneous maximum	≤ 9 SU	all year	203
Solids, total suspended	monthly average	≤ 27 mg/L	all year	203
Solids, total suspended	daily maximum	≤ 88 mg/L	all year	203
Nitrogen, ammonia total [as N]	monthly average	≤ 4.9 mg/L	all year	203
Nitrogen, ammonia total [as N]	daily maximum	≤ 10 mg/L	all year	203
Zinc, total [as Zn]	monthly average	≤ .087 mg/L	all year	203
Zinc, total [as Zn]	daily maximum	≤ .2 mg/L	all year	203
Phenol	monthly average	≤ .015 mg/L	all year	203
Phenol	daily maximum	≤ .026 mg/L	all year	203
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	203
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	203
.alpha.-Terpineol	monthly average	≤ .016 mg/L	all year	203
.alpha.-Terpineol	daily maximum	≤ .033 mg/L	all year	203
Priority pollutants scan [yes/no]	minimum	≥ 1 N=0;Y=1	all year	203
Mercury, total [as Hg]	monthly average	report only (mg/L)	all year	203
Mercury, total [as Hg]	daily maximum	report only (mg/L)	all year	203
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	203
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	203
p-Cresol	monthly average	≤ .014 mg/L	all year	203
p-Cresol	daily maximum	≤ .025 mg/L	all year	203
Benzoic acids, total	monthly average	≤ .071 mg/L	all year	203
Benzoic acids, total	daily maximum	≤ .12 mg/L	all year	203

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/LA0078921 · MCP: https://passage-data.com/mcp