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Magnolia Water Utility Operating Company LLC - Ile Des Cannes

Sewerage Systems, Lafayette, Louisiana. NPDES permit LA0074781, in force until Sep 30, 2030. Last 12 months: over a limit 71 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Q quarterly (6 values), form A quarterly, form Y yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
25 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 71 values over a limit
Period endingParameterReportedLimitOver by
November 2025BOD, carbonaceous [5 day, 20 C], daily maximum42 mg/L≤ 15 mg/L180%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average14 mg/L≤ 10 mg/L40%
November 2025Nitrogen, ammonia total [as N], daily maximum25 mg/L≤ 10 mg/L150%
December 2025BOD, carbonaceous [5 day, 20 C], daily maximum77 mg/L≤ 15 mg/L413%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average49 mg/L≤ 10 mg/L390%
December 2025BOD, carbonaceous, percent removal, monthly average minimum78 %≥ 85 %47%
December 2025Coliform, fecal general, daily maximum9200 #/100mL≤ 400 #/100mL2200%
December 2025Nitrogen, ammonia total [as N], daily maximum21 mg/L≤ 10 mg/L110%
December 2025Nitrogen, ammonia total [as N], monthly average11.7 mg/L≤ 5 mg/L134%
December 2025Solids, suspended percent removal, monthly average minimum82 %≥ 85 %20%
December 2025Solids, total suspended, daily maximum40 mg/L≤ 23 mg/L74%
December 2025Solids, total suspended, monthly average25 mg/L≤ 15 mg/L67%
January 2026BOD, carbonaceous [5 day, 20 C], daily maximum127 mg/L≤ 30 mg/L323%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average59 mg/L≤ 20 mg/L195%
January 2026Coliform, fecal general, daily maximum1196 #/100mL≤ 400 #/100mL199%
January 2026Nitrogen, ammonia total [as N], daily maximum21 mg/L≤ 20 mg/L5%
January 2026Nitrogen, ammonia total [as N], monthly average13 mg/L≤ 10 mg/L30%
January 2026Oxygen, dissolved [DO], monthly average minimum4.3 mg/L≥ 5 mg/L14%
January 2026Solids, total suspended, daily maximum40 mg/L≤ 30 mg/L33%
January 2026Solids, total suspended, monthly average29 mg/L≤ 20 mg/L45%
February 2026BOD, carbonaceous [5 day, 20 C], daily maximum207 mg/L≤ 30 mg/L590%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average153 mg/L≤ 20 mg/L665%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average266 lb/d≤ 45.9 lb/d480%
February 2026Coliform, fecal general, daily maximum13800 #/100mL≤ 400 #/100mL3350%
February 2026Coliform, fecal general, monthly geometric mean< 913 #/100mL≤ 200 #/100mL356%
February 2026Nitrogen, ammonia total [as N], daily maximum24 mg/L≤ 20 mg/L20%
February 2026Nitrogen, ammonia total [as N], monthly average18.035 mg/L≤ 10 mg/L80%
February 2026Nitrogen, ammonia total [as N], monthly average31.33 lb/d≤ 22.9 lb/d37%
February 2026Solids, total suspended, daily maximum74 mg/L≤ 30 mg/L147%
February 2026Solids, total suspended, monthly average109 lb/d≤ 45.9 lb/d137%
February 2026Solids, total suspended, monthly average63 mg/L≤ 20 mg/L215%
March 2026BOD, carbonaceous [5 day, 20 C], daily maximum256 mg/L≤ 30 mg/L753%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average180 lb/d≤ 45.9 lb/d292%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average211 mg/L≤ 20 mg/L955%
March 2026Coliform, fecal general, daily maximum13800 #/100mL≤ 400 #/100mL3350%
March 2026Coliform, fecal general, monthly geometric mean< 1230 #/100mL≤ 200 #/100mL515%
March 2026Nitrogen, ammonia total [as N], daily maximum27 mg/L≤ 20 mg/L35%
March 2026Solids, total suspended, daily maximum80 mg/L≤ 30 mg/L167%
March 2026Solids, total suspended, monthly average52 lb/d≤ 45.9 lb/d13%
March 2026Solids, total suspended, monthly average61 mg/L≤ 20 mg/L205%
April 2026BOD, carbonaceous [5 day, 20 C], daily maximum235 mg/L≤ 30 mg/L683%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average164 mg/L≤ 20 mg/L720%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average86 lb/d≤ 45.9 lb/d87%
April 2026Coliform, fecal general, daily maximum13800 #/100mL≤ 400 #/100mL3350%
April 2026Coliform, fecal general, monthly geometric mean6095 #/100mL≤ 200 #/100mL2948%
April 2026Nitrogen, ammonia total [as N], daily maximum74 mg/L≤ 20 mg/L270%
April 2026Nitrogen, ammonia total [as N], monthly average30.6 mg/L≤ 10 mg/L206%
April 2026Oxygen, dissolved [DO], monthly average minimum3 mg/L≥ 5 mg/L40%
April 2026Solids, total suspended, daily maximum66 mg/L≤ 30 mg/L120%
April 2026Solids, total suspended, monthly average57 mg/L≤ 20 mg/L185%
May 2026BOD, carbonaceous [5 day, 20 C], daily maximum180 mg/L≤ 15 mg/L1100%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average31 lb/d≤ 22.9 lb/d35%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average55 mg/L≤ 10 mg/L450%
May 2026Coliform, fecal general, daily maximum15200 #/100mL≤ 400 #/100mL3700%
May 2026Coliform, fecal general, monthly geometric mean2041 #/100mL≤ 200 #/100mL921%
May 2026Nitrogen, ammonia total [as N], daily maximum62 mg/L≤ 10 mg/L520%
May 2026Nitrogen, ammonia total [as N], monthly average13.982 lb/d≤ 11.5 lb/d22%
May 2026Nitrogen, ammonia total [as N], monthly average25 mg/L≤ 5 mg/L400%
May 2026Oxygen, dissolved [DO], monthly average minimum1.2 mg/L≥ 5 mg/L76%
May 2026Solids, total suspended, daily maximum71 mg/L≤ 23 mg/L209%
May 2026Solids, total suspended, monthly average48 mg/L≤ 15 mg/L220%
June 2026BOD, carbonaceous [5 day, 20 C], daily maximum111 mg/L≤ 15 mg/L640%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average40 mg/L≤ 10 mg/L300%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average55 lb/d≤ 22.9 lb/d140%
June 2026Coliform, fecal general, daily maximum5520 #/100mL≤ 400 #/100mL1280%
June 2026Coliform, fecal general, monthly geometric mean327 #/100mL≤ 200 #/100mL64%
June 2026Nitrogen, ammonia total [as N], daily maximum12 mg/L≤ 10 mg/L20%
June 2026Nitrogen, ammonia total [as N], monthly average5.2 mg/L≤ 5 mg/L4%
June 2026Solids, total suspended, daily maximum63 mg/L≤ 23 mg/L174%
June 2026Solids, total suspended, monthly average37 mg/L≤ 15 mg/L147%
June 2026Solids, total suspended, monthly average50 lb/d≤ 34.4 lb/d45%

Limits in force (38)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/LMay–Dec
Solids, total suspendedmonthly average≤ 20 mg/LJan–Apr
Solids, total suspendeddaily maximum≤ 23 mg/LMay–Dec
Solids, total suspendeddaily maximum≤ 30 mg/LJan–Apr
Solids, total suspendedmonthly average≤ 34.4 lb/dMay–Dec
Solids, total suspendedmonthly average≤ 45.9 lb/dJan–Apr
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport 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–Dec
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan–Apr
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/LMay–Dec
Nitrogen, ammonia total [as N]daily maximum≤ 20 mg/LJan–Apr
Nitrogen, ammonia total [as N]monthly average≤ 11.5 lb/dMay–Dec
Nitrogen, ammonia total [as N]monthly average≤ 22.9 lb/dJan–Apr
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan–Apr
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 30 mg/LJan–Apr
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/LMay–Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 45.9 lb/dJan–Apr
BOD, carbonaceous [5 day, 20 C]monthly average≤ 22.9 lb/dMay–Dec
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year
BOD, carbonaceous, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

New limits from Oct 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chlorine, total residual, instantaneous maximum0.033 mg/Lnew2.2 mg/L (9 values)66.7×

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

Your permit document is the final word. As JSON: /api/v1/permits/LA0074781 · MCP: https://passage-data.com/mcp