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Citizens of Westfield LLC WWTP

Sewage treatment plant, major discharger, Westfield, Indiana. NPDES permit IN0059544, in force until May 31, 2027. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (24 values)
Renewal application due
Dec 2, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 3 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
June 2026E. coli, colony forming units [CFU], daily maximum325.5 CFU/100mL≤ 235 CFU/100mL39%

Limits in force (81)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/LMay–Nov
Oxygen, dissolved [DO]daily average minimum≥ 5 mg/LJan, Feb, Mar, Apr, Dec
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/LMay–Nov
Oxygen, dissolved [DO]daily average minimum≥ 5 mg/LJan, Feb, Mar, Apr, Dec
pHdaily minimum≥ 6 SUall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 18 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 12 mg/LMay–Nov
Solids, total suspendedmonthly average≤ 12 mg/LMay–Nov
Solids, total suspendedmonthly average≤ 18 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 27 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 18 mg/LMay–Nov
Solids, total suspendedmaximum weekly average≤ 18 mg/LMay–Nov
Solids, total suspendedmaximum weekly average≤ 27 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 563 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 376 lb/dMay–Nov
Solids, total suspendedmonthly average≤ 500 lb/dMay–Nov
Solids, total suspendedmonthly average≤ 750 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 845 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 563 lb/dMay–Nov
Solids, total suspendedmaximum weekly average≤ 750 lb/dMay–Nov
Solids, total suspendedmaximum weekly average≤ 1100 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 2 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 2 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 41 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 59 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 54 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 80 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 63 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 91 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 84 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 120 lb/dJan, Feb, Mar, Apr, Dec
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)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 plantmonthly averagereport only (MGD)all year
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteDec
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteNov
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicDec
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicNov
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteDec
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteNov
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicDec
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicNov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 23 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 23 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 469 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 313 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 420 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 630 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 720 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 469 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 630 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 960 lb/dJan, Feb, Mar, Apr, Dec
Phosphorus, total percent removalmonthly average minimum≥ 80 %all year
Flow, totalmonthly totalreport only (Mgal/mo)all year

How strict are these limits?

Cited limits by parameter: Indiana'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/IN0059544 · MCP: https://passage-data.com/mcp