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Stonetown Forest Oaks WWTP

Mobile Home Site Operators, Chesterton, Indiana. NPDES permit IN0039659, in force until Jan 31, 2028. Last 12 months: over a limit 4 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (27 values)
Renewal application due
Aug 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
16 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
July 2026Phosphorus, total [as P], monthly average1.246 mg/L≤ 1 mg/L25%
July 2026Phosphorus, total percent removal, monthly average minimum74.2 %≥ 80 %29%
August 2026E. coli, colony forming units [CFU], daily maximum548 CFU/100mL≤ 235 CFU/100mL133%
August 2026Nitrogen, ammonia total [as N], daily maximum4.5 mg/L≤ 4.2 mg/L7%

Limits in force (32)

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≤ 5.4 lb/dall year
Solids, total suspendedmaximum weekly average≤ 8.1 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 4.2 mg/LMay–Nov
Nitrogen, ammonia total [as N]daily maximum≤ 4.3 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ .8 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 2.3 lb/dMay–Nov
Nitrogen, ammonia total [as N]daily maximum≤ 2.3 lb/dJan, Feb, Mar, Apr, Dec
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Chlorine, total residualmonthly average≤ .01 mg/LApr–Oct
Chlorine, total residualdaily maximum< .06 mg/LApr–Oct
Chlorine, total residualmonthly average≤ .005 lb/dApr–Oct
Chlorine, total residualdaily maximum< .032 lb/dApr–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≤ 5.4 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 8.1 lb/dall year
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.

Same industry: the 109 Real Estate permits in Indiana.

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Your permit document is the final word. As JSON: /api/v1/permits/IN0039659 · MCP: https://passage-data.com/mcp