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Sewerage Systems, Greenfield, Indiana. NPDES permit IN0064807, in force until Mar 31, 2030. Last 12 months: over a limit 25 times (last August 2026), 3 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (19 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 1 required value missing, 4 of 12 reports late

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

All 25 values over a limit
Period endingParameterReportedLimitOver by
December 2025Oxygen, dissolved [DO], daily average minimum5.44 mg/L≥ 6 mg/L9%
December 2025Solids, total suspended, maximum weekly average18.5 mg/L≤ 18 mg/L3%
February 2026Solids, total suspended, maximum weekly average19.7 mg/L≤ 18 mg/L9%
March 2026Nitrogen, ammonia total [as N], maximum weekly average2.45 lb/d≤ 1.2 lb/d104%
March 2026Nitrogen, ammonia total [as N], maximum weekly average3.55 mg/L≤ 2.4 mg/L48%
March 2026Solids, total suspended, monthly average39.34 mg/L≤ 12 mg/L228%
March 2026Solids, total suspended, monthly average80.74 lb/d≤ 6 lb/d1246%
March 2026Solids, total suspended, maximum weekly average407 mg/L≤ 18 mg/L2161%
March 2026Solids, total suspended, maximum weekly average875.75 lb/d≤ 9 lb/d9631%
May 2026Oxygen, dissolved [DO], daily average minimum5.81 mg/L≥ 6 mg/L3%
May 2026Solids, total suspended, monthly average24.76 lb/d≤ 6 lb/d313%
May 2026Solids, total suspended, monthly average34.275 mg/L≤ 12 mg/L186%
May 2026Solids, total suspended, maximum weekly average189.27 lb/d≤ 9 lb/d2003%
May 2026Solids, total suspended, maximum weekly average255 mg/L≤ 18 mg/L1317%
June 2026Nitrogen, ammonia total [as N], monthly average.56 lb/d≤ .55 lb/d2%
June 2026Nitrogen, ammonia total [as N], maximum weekly average1.94 lb/d≤ .8 lb/d143%
June 2026Nitrogen, ammonia total [as N], maximum weekly average2.01 mg/L≤ 1.6 mg/L26%
June 2026Solids, total suspended, monthly average61.97 lb/d≤ 6 lb/d933%
June 2026Solids, total suspended, monthly average66.19 mg/L≤ 12 mg/L452%
June 2026Solids, total suspended, maximum weekly average355.05 lb/d≤ 9 lb/d3845%
June 2026Solids, total suspended, maximum weekly average367 mg/L≤ 18 mg/L1939%
August 2026Solids, total suspended, monthly average16.59 mg/L≤ 12 mg/L38%
August 2026Solids, total suspended, monthly average9.65 lb/d≤ 6 lb/d61%
August 2026Solids, total suspended, maximum weekly average115 mg/L≤ 18 mg/L539%
August 2026Solids, total suspended, maximum weekly average78.64 lb/d≤ 9 lb/d774%

Limits in force (23)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/Lall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 12 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 18 mg/Lall year
Solids, total suspendedmonthly average≤ 6 lb/dall year
Solids, total suspendedmaximum weekly average≤ 9 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 1.1 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.6 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.6 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.4 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ .55 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ .8 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ .8 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.2 lb/dJan, Feb, Mar, Apr, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
E. coli, colony forming units [CFU]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 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 7.5 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.

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Your permit document is the final word. As JSON: /api/v1/permits/IN0064807 · MCP: https://passage-data.com/mcp