Passage Data · Check a report · Use it from your AI

Dyer Wastewater Treatment Plant

Sewage treatment plant, major discharger, Dyer, Indiana. NPDES permit IN0039331, in force until Oct 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (28 values)
Renewal application due
May 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (49)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily average minimum≥ 7 mg/LMay–Nov
Oxygen, dissolved [DO]daily average minimum≥ 5 mg/LJan, Feb, Mar, Apr, Dec
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 24 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 12 mg/LMay–Nov
Solids, total suspendedmaximum weekly average≤ 36 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 18 mg/LMay–Nov
Solids, total suspendedmonthly average≤ 521 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 260 lb/dMay–Nov
Solids, total suspendedmaximum weekly average≤ 781 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 391 lb/dMay–Nov
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≤ 1.7 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 2.5 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.6 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 3.8 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 36.9 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 54.2 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 56.4 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 82.4 lb/dJan, Feb, Mar, Apr, Dec
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Chlorine, total residualmonthly average< .06 mg/LApr–Oct
Chlorine, total residualdaily maximum< .06 mg/LApr–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 maximumreport only (CFU/100mL)Apr–Oct
Number of Eventsmonthly totalreport only (# exceed)Apr–Oct
Number of Eventsmonthly totalreport only (#)Apr–Oct
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteMay
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteApr
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 8 tox chronicMay
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 8 tox chronicApr
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteMay
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteApr
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 8 tox chronicMay
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 8 tox chronicApr
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 30 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]monthly average≤ 434 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 217 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 651 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 326 lb/dMay–Nov
Flow, totalmonthly totalreport only (Mgal/mo)all year

How strict are these limits?

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

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0039331 · MCP: https://passage-data.com/mcp