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Laconia Municipal WWTP

Sewage treatment plant, Laconia, Indiana. NPDES permit IN0061239, in force until Sep 30, 2031. Last 12 months: over a limit 19 times (last August 2026), 18 required values missing, 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Last report on file
August 2026
Oct 2024 – Sep 2025
9 values over a limit, 18 required values missing, 7 of 12 reports late

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

All 19 values over a limit
Period endingParameterReportedLimitOver by
March 2026Nitrogen, ammonia total [as N], monthly average19.68 mg/L≤ 8.7 mg/L126%
March 2026Nitrogen, ammonia total [as N], maximum weekly average35.96 mg/L≤ 13.1 mg/L175%
April 2026Nitrogen, ammonia total [as N], monthly average41.57 mg/L≤ 8.7 mg/L378%
April 2026Nitrogen, ammonia total [as N], maximum weekly average44.67 mg/L≤ 13.1 mg/L241%
May 2026Nitrogen, ammonia total [as N], monthly average.553 lb/d≤ .31 lb/d78%
May 2026Nitrogen, ammonia total [as N], monthly average36.15 mg/L≤ 3.7 mg/L877%
May 2026Nitrogen, ammonia total [as N], maximum weekly average.553 lb/d≤ .47 lb/d18%
May 2026Nitrogen, ammonia total [as N], maximum weekly average54.78 mg/L≤ 5.6 mg/L878%
June 2026Nitrogen, ammonia total [as N], monthly average.403 lb/d≤ .31 lb/d30%
June 2026Nitrogen, ammonia total [as N], monthly average29.87 mg/L≤ 3.7 mg/L707%
June 2026Nitrogen, ammonia total [as N], maximum weekly average38.54 mg/L≤ 5.6 mg/L588%
July 2026E. coli, colony forming units [CFU], monthly geometric mean129.1 CFU/100mL≤ 125 CFU/100mL3%
July 2026Nitrogen, ammonia total [as N], monthly average14.23 mg/L≤ 3.7 mg/L285%
July 2026Nitrogen, ammonia total [as N], maximum weekly average29 mg/L≤ 5.6 mg/L418%
August 2026Nitrogen, ammonia total [as N], monthly average24.5 mg/L≤ 3.7 mg/L562%
August 2026Nitrogen, ammonia total [as N], maximum weekly average.64 lb/d≤ .47 lb/d36%
August 2026Nitrogen, ammonia total [as N], maximum weekly average42.6 mg/L≤ 5.6 mg/L661%
August 2026Solids, total suspended, monthly average36 mg/L≤ 30 mg/L20%
August 2026Solids, total suspended, maximum weekly average100 mg/L≤ 45 mg/L122%

Limits in force (23)

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≤ 2.52 lb/dall year
Solids, total suspendedmaximum weekly average≤ 3.79 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 3.7 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 8.7 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 5.6 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 13.1 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ .31 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ .73 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ .47 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.1 lb/dJan, Feb, Mar, Apr, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
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
Coliform, fecal generalmonthly geometric mean≤ 2000 #/100mLJan, Feb, Mar, Nov, Dec
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≤ 2.1 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 3.36 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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0061239 · MCP: https://passage-data.com/mcp