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Atlanta WWTP

Sewage treatment plant, Atlanta, Indiana. NPDES permit IN0022306, in force until Feb 28, 2029. Last 12 months: over a limit 8 times (last March 2026), 14 required values missing, 2 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (17 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
3 values over a limit, 12 required values missing, 3 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025Nitrogen, ammonia total [as N], monthly average21.567 mg/L≤ 9.6 mg/L125%
November 2025Nitrogen, ammonia total [as N], maximum weekly average21.6 mg/L≤ 14.4 mg/L50%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average33.4 mg/L≤ 25 mg/L34%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average33.4 mg/L≤ 25 mg/L34%
March 2026Nitrogen, ammonia total [as N], monthly average21.46 mg/L≤ 10.4 mg/L106%
March 2026Nitrogen, ammonia total [as N], monthly average21.46 mg/L≤ 10.4 mg/L106%
March 2026Nitrogen, ammonia total [as N], maximum weekly average28.5 mg/L≤ 15.6 mg/L83%
March 2026Nitrogen, ammonia total [as N], maximum weekly average28.5 mg/L≤ 15.6 mg/L83%

Limits in force (19)

ParameterStatisticLimitMonths
Streamflowmonthly averagereport only (MGD)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 70 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 105 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 9.6 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 10.4 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 14.4 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 15.6 mg/LJan, Feb, Mar, Apr, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)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
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall year
Dilution factordaily maximum≤ .1 Ratioall 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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0022306 · MCP: https://passage-data.com/mcp