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Sewerage District #1 of Iberia Parish & City of New Iberia- Tete Bayou WWTP

Sewage treatment plant, major discharger, New Iberia, Louisiana. NPDES permit LA0065251, in force until Apr 30, 2027. Last 12 months: over a limit 53 times (last September 2026), 1 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (16 values), form DA quarterly (11 values), form PI quarterly (11 values), form Q quarterly (6 values)
Renewal application due
Nov 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
35 values over a limit, 0 required values missing, 0 of 24 reports late

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

All 53 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average24.4 mg/L≤ 5 mg/L388%
October 2025Nitrogen, ammonia total [as N], monthly average269 lb/d≤ 104.3 lb/d158%
October 2025Nitrogen, ammonia total [as N], weekly average29.5 mg/L≤ 10 mg/L195%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average12 mg/L≤ 10 mg/L20%
December 2025BOD, carbonaceous [5 day, 20 C], weekly average21 mg/L≤ 15 mg/L40%
December 2025Solids, total suspended, monthly average26 mg/L≤ 15 mg/L73%
December 2025Solids, total suspended, weekly average40 mg/L≤ 23 mg/L74%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average11 mg/L≤ 10 mg/L10%
January 2026BOD, carbonaceous [5 day, 20 C], weekly average16 mg/L≤ 15 mg/L7%
January 2026Solids, total suspended, monthly average28 mg/L≤ 15 mg/L87%
January 2026Solids, total suspended, monthly average367 lb/d≤ 313 lb/d17%
January 2026Solids, total suspended, weekly average52 mg/L≤ 23 mg/L126%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average21 mg/L≤ 10 mg/L110%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average285 lb/d≤ 209 lb/d36%
February 2026BOD, carbonaceous [5 day, 20 C], weekly average24 mg/L≤ 15 mg/L60%
February 2026Solids, total suspended, monthly average31 mg/L≤ 15 mg/L107%
February 2026Solids, total suspended, monthly average421 lb/d≤ 313 lb/d35%
February 2026Solids, total suspended, weekly average40 mg/L≤ 23 mg/L74%
March 2026Solids, total suspended, monthly average20 mg/L≤ 15 mg/L33%
March 2026Solids, total suspended, weekly average28 mg/L≤ 23 mg/L22%
April 2026BOD, carbonaceous [5 day, 20 C], weekly average16 mg/L≤ 15 mg/L7%
April 2026Solids, total suspended, monthly average29 mg/L≤ 15 mg/L93%
April 2026Solids, total suspended, weekly average54 mg/L≤ 23 mg/L135%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average25 mg/L≤ 10 mg/L150%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average518 lb/d≤ 209 lb/d148%
May 2026BOD, carbonaceous [5 day, 20 C], weekly average39 mg/L≤ 15 mg/L160%
May 2026Nitrogen, ammonia total [as N], monthly average14.4 mg/L≤ 5 mg/L188%
May 2026Nitrogen, ammonia total [as N], monthly average297.4 lb/d≤ 104.3 lb/d185%
May 2026Nitrogen, ammonia total [as N], weekly average27.5 mg/L≤ 10 mg/L175%
May 2026Solids, total suspended, monthly average44 mg/L≤ 15 mg/L193%
May 2026Solids, total suspended, monthly average913 lb/d≤ 313 lb/d192%
May 2026Solids, total suspended, weekly average57 mg/L≤ 23 mg/L148%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average15 mg/L≤ 10 mg/L50%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average250 lb/d≤ 209 lb/d20%
June 2026BOD, carbonaceous [5 day, 20 C], weekly average36 mg/L≤ 15 mg/L140%
June 2026Nitrogen, ammonia total [as N], monthly average13.7 mg/L≤ 5 mg/L174%
June 2026Nitrogen, ammonia total [as N], monthly average226.9 lb/d≤ 104.3 lb/d118%
June 2026Nitrogen, ammonia total [as N], weekly average18.4 mg/L≤ 10 mg/L84%
June 2026Solids, total suspended, monthly average23 mg/L≤ 15 mg/L53%
June 2026Solids, total suspended, monthly average386 lb/d≤ 313 lb/d23%
June 2026Solids, total suspended, weekly average49 mg/L≤ 23 mg/L113%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average11 mg/L≤ 10 mg/L10%
July 2026BOD, carbonaceous [5 day, 20 C], weekly average24 mg/L≤ 15 mg/L60%
July 2026Nitrogen, ammonia total [as N], monthly average13.9 mg/L≤ 5 mg/L178%
July 2026Nitrogen, ammonia total [as N], monthly average218.7 lb/d≤ 104.3 lb/d110%
July 2026Nitrogen, ammonia total [as N], weekly average20.1 mg/L≤ 10 mg/L101%
August 2026Nitrogen, ammonia total [as N], monthly average23.5 mg/L≤ 5 mg/L370%
August 2026Nitrogen, ammonia total [as N], monthly average249.4 lb/d≤ 104.3 lb/d139%
August 2026Nitrogen, ammonia total [as N], weekly average29 mg/L≤ 10 mg/L190%
August 2026Oxygen, dissolved [DO], monthly average minimum1.62 mg/L≥ 2 mg/L19%
September 2026Nitrogen, ammonia total [as N], monthly average24.4 mg/L≤ 5 mg/L388%
September 2026Nitrogen, ammonia total [as N], monthly average275.2 lb/d≤ 104.3 lb/d164%
September 2026Nitrogen, ammonia total [as N], weekly average35.7 mg/L≤ 10 mg/L257%

Limits in force (47)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 2 mg/LMay–Oct
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendedweekly average≤ 23 mg/Lall year
Solids, total suspendedmonthly average≤ 313 lb/dall 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≤ 5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 10 mg/LMay–Oct
Nitrogen, ammonia total [as N]weekly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 104.3 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, Nov, Dec
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
Whole effluent toxicity - retest #148-hour minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #148-hour minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #248-hour minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #248-hour minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all year
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all 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
Whole Effluent Toxicity - Retest #348-hour minimumreport only (pass=0;fail=1)all year
Whole Effluent Toxicity - Retest #348-hour minimumreport only (pass=0;fail=1)all year
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)all year
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)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≤ 209 lb/dall year
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48-hour minimumreport only (pass=0;fail=1)all year
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexmonthly average minimumreport only (pass=0;fail=1)all year
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48-hour minimumreport only (pass=0;fail=1)all year
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all year
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48-hour minimumreport only (%)all year
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexmonthly average minimumreport only (%)all year
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48-hour minimumreport only (%)all year
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasmonthly average minimumreport only (%)all year
Coef Of Var Static Renewal 48Hr Acute D. pulexmaximumreport only (%)all year
Coef Of Var Static Renewal 48Hr Acute Pimephales promelasmaximumreport only (%)all year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0065251 · MCP: https://passage-data.com/mcp