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

Boswell WWTP

Sewage treatment plant, Boswell, Indiana. NPDES permit IN0039756, in force until Sep 30, 2028. Last 12 months: over a limit once (last February 2026), 3 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (23 values)
Renewal application due
Apr 3, 2028 · 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, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
February 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average18.3 lb/d≤ 16.3 lb/d12%

Limits in force (28)

ParameterStatisticLimitMonths
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 maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 10 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 15 mg/Lall year
Solids, total suspendedmonthly average≤ 10.8 lb/dall year
Solids, total suspendedmaximum weekly average≤ 16.3 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 2.3 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.3 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 3.5 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.6 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 2.5 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.5 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 3.8 lb/dJan, Feb, Mar, Apr, Dec
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
Chlorine, total residualdaily minimum≥ .5 mg/LApr–Oct
Chlorine, total residualdaily maximumreport only (mg/L)Apr–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
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10.8 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 16.3 lb/dall 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.

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/IN0039756 · MCP: https://passage-data.com/mcp