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Spencer Municipal WWTP

Sewage treatment plant, Spencer, Indiana. NPDES permit IN0020192, in force until Aug 31, 2029. Last 12 months: over a limit 51 times (last August 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 27 days after each period: form A monthly (24 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
46 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 51 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average14.7 mg/L≤ 5.8 mg/L153%
October 2025Nitrogen, ammonia total [as N], monthly average38.9 lb/d≤ 33.9 lb/d15%
October 2025Nitrogen, ammonia total [as N], maximum weekly average17.2 mg/L≤ 8.7 mg/L98%
October 2025Phosphorus, total [as P], monthly average2.66 mg/L≤ 1 mg/L166%
October 2025Solids, total suspended, monthly average191.8 lb/d≤ 175 lb/d10%
October 2025Solids, total suspended, monthly average81.8 mg/L≤ 30 mg/L173%
October 2025Solids, total suspended, maximum weekly average95.3 mg/L≤ 45 mg/L112%
November 2025Nitrogen, ammonia total [as N], monthly average13.7 mg/L≤ 5.8 mg/L136%
November 2025Nitrogen, ammonia total [as N], monthly average36.4 lb/d≤ 33.9 lb/d7%
November 2025Nitrogen, ammonia total [as N], maximum weekly average20.3 mg/L≤ 8.7 mg/L133%
November 2025Phosphorus, total [as P], monthly average1.7 mg/L≤ 1 mg/L70%
November 2025Solids, total suspended, monthly average218.9 lb/d≤ 175 lb/d25%
November 2025Solids, total suspended, monthly average83.4 mg/L≤ 30 mg/L178%
November 2025Solids, total suspended, maximum weekly average143.3 mg/L≤ 45 mg/L218%
November 2025Solids, total suspended, maximum weekly average316.7 lb/d≤ 263 lb/d20%
December 2025Nitrogen, ammonia total [as N], monthly average11.3 mg/L≤ 5.8 mg/L95%
December 2025Nitrogen, ammonia total [as N], maximum weekly average19.8 mg/L≤ 8.7 mg/L128%
December 2025Nitrogen, ammonia total [as N], maximum weekly average54 lb/d≤ 50.8 lb/d6%
December 2025Phosphorus, total [as P], monthly average1.6 mg/L≤ 1 mg/L60%
December 2025Solids, total suspended, monthly average240.7 lb/d≤ 175 lb/d38%
December 2025Solids, total suspended, monthly average85 mg/L≤ 30 mg/L183%
December 2025Solids, total suspended, maximum weekly average159.3 mg/L≤ 45 mg/L254%
December 2025Solids, total suspended, maximum weekly average437.2 lb/d≤ 263 lb/d66%
January 2026Nitrogen, ammonia total [as N], monthly average6.8 mg/L≤ 5.8 mg/L17%
January 2026Nitrogen, ammonia total [as N], maximum weekly average12.8 mg/L≤ 8.7 mg/L47%
January 2026Phosphorus, total [as P], monthly average1.8 mg/L≤ 1 mg/L80%
January 2026Solids, total suspended, monthly average201.5 lb/d≤ 175 lb/d15%
January 2026Solids, total suspended, monthly average81 mg/L≤ 30 mg/L170%
January 2026Solids, total suspended, maximum weekly average136.7 mg/L≤ 45 mg/L204%
January 2026Solids, total suspended, maximum weekly average343.2 lb/d≤ 263 lb/d30%
April 2026Solids, total suspended, monthly average35 mg/L≤ 30 mg/L17%
June 2026Nitrogen, ammonia total [as N], monthly average9.5 mg/L≤ 5.8 mg/L64%
June 2026Nitrogen, ammonia total [as N], maximum weekly average13.1 mg/L≤ 8.7 mg/L51%
June 2026Phosphorus, total [as P], monthly average1.6 mg/L≤ 1 mg/L60%
June 2026Solids, total suspended, monthly average290.91 lb/d≤ 175 lb/d66%
June 2026Solids, total suspended, monthly average80 mg/L≤ 30 mg/L167%
June 2026Solids, total suspended, maximum weekly average101.5 mg/L≤ 45 mg/L126%
June 2026Solids, total suspended, maximum weekly average404.2 lb/d≤ 263 lb/d54%
July 2026Nitrogen, ammonia total [as N], monthly average9.4 mg/L≤ 5.8 mg/L62%
July 2026Nitrogen, ammonia total [as N], maximum weekly average13.5 mg/L≤ 8.7 mg/L55%
July 2026Phosphorus, total [as P], monthly average1.3 mg/L≤ 1 mg/L30%
July 2026Solids, total suspended, monthly average47.9 mg/L≤ 30 mg/L60%
July 2026Solids, total suspended, maximum weekly average68.3 mg/L≤ 45 mg/L52%
August 2026Nitrogen, ammonia total [as N], monthly average17.4 mg/L≤ 5.8 mg/L200%
August 2026Nitrogen, ammonia total [as N], monthly average56.2 lb/d≤ 33.9 lb/d66%
August 2026Nitrogen, ammonia total [as N], maximum weekly average21.7 mg/L≤ 8.7 mg/L149%
August 2026Nitrogen, ammonia total [as N], maximum weekly average77.9 lb/d≤ 50.8 lb/d53%
August 2026Solids, total suspended, monthly average249.2 lb/d≤ 175 lb/d42%
August 2026Solids, total suspended, monthly average88.2 mg/L≤ 30 mg/L194%
August 2026Solids, total suspended, maximum weekly average149 mg/L≤ 45 mg/L231%
August 2026Solids, total suspended, maximum weekly average437.6 lb/d≤ 263 lb/d66%

Limits in force (24)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 175 lb/dall year
Solids, total suspendedmaximum weekly average≤ 263 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 5.8 mg/Lall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 8.7 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 33.9 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 50.8 lb/dall year
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
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≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 146 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 234 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/IN0020192 · MCP: https://passage-data.com/mcp