ST Mary Parish Government — NPDES permit LA0056227: limits, due date and EPA's record

Refuse Systems, Berwick, Louisiana. NPDES permit LA0056227, in force until Mar 31, 2028. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
June 2026	Coliform, fecal general, daily maximum	1203.3 #/100mL	≤ 400 #/100mL	201%

Limits in force (47)

Parameter	Statistic	Limit	Months	Outfall
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	001
BOD, 5-day, 20 deg. C	daily maximum	≤ 45 mg/L	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	001
pH	instantaneous maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	≤ 27 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 88 mg/L	all year	001
Oil & Grease	daily maximum	≤ 15 mg/L	all year	001
Nitrogen, total [as N]	monthly average	report only (mg/L)	all year	001
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 4.9 mg/L	all year	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 10 mg/L	all year	001
Phosphorus, total [as P]	monthly average	report only (mg/L)	all year	001
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	001
Carbon, tot organic [TOC]	daily maximum	≤ 50 mg/L	all year	001
Chloride [as Cl]	daily maximum	≤ 18734 mg/L	all year	001
Sulfate, total [as SO4]	daily maximum	≤ 11709 mg/L	all year	001
Zinc, total [as Zn]	monthly average	≤ .11 mg/L	all year	001
Zinc, total [as Zn]	daily maximum	≤ .2 mg/L	all year	001
Phenol	monthly average	≤ .015 mg/L	all year	001
Phenol	daily maximum	≤ .026 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
.alpha.-Terpineol	monthly average	≤ .016 mg/L	all year	001
.alpha.-Terpineol	daily maximum	≤ .033 mg/L	all year	001
Priority pollutants scan [yes/no]	minimum	≥ 1 N=0;Y=1	all year	001
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	001
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	001
p-Cresol	monthly average	≤ .014 mg/L	all year	001
p-Cresol	daily maximum	≤ .025 mg/L	all year	001
Benzoic acids, total	monthly average	≤ .071 mg/L	all year	001
Benzoic acids, total	daily maximum	≤ .12 mg/L	all year	001
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 45 mg/L	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous maximum	≤ 9 SU	all year	002
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	002
Oil & 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
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	002
pH	instantaneous minimum	≥ 6 SU	all year	004
pH	instantaneous maximum	≤ 9 SU	all year	004
Solids, total suspended	daily maximum	report only (mg/L)	all year	004
Oil & Grease	daily maximum	≤ 15 mg/L	all year	004
Carbon, tot organic [TOC]	daily maximum	≤ 50 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	daily maximum	report only (MGD)	all year	004

New limits from Apr 1, 2028

Parameter	New limit	New or tighter	Median, last 12 months	× new limit
Nitrogen, ammonia total [as N], daily maximum	5.2 mg/L	tighter	—	—
Nitrogen, ammonia total [as N], monthly average	2.2 mg/L	tighter	—	—

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/LA0056227 · MCP: https://passage-data.com/mcp