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Picnic Woods Development

Sewage treatment plant, Lawrenceburg, Indiana. NPDES permit IN0053759, in force until Apr 30, 2031. Last 12 months: over a limit 31 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (23 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
41 values over a limit, 0 required values missing, 2 of 12 reports late

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

All 31 values over a limit
Period endingParameterReportedLimitOver by
October 2025Chlorine, total residual, daily minimum.02 mg/L≥ .5 mg/L96%
October 2025Chlorine, total residual, daily maximum.23 mg/L< .06 mg/L283%
January 2026Nitrogen, ammonia total [as N], maximum weekly average3.4 mg/L≤ 2.8 mg/L21%
February 2026Nitrogen, ammonia total [as N], monthly average2 mg/L≤ 1.9 mg/L5%
February 2026Nitrogen, ammonia total [as N], maximum weekly average3.6 mg/L≤ 2.8 mg/L29%
March 2026Nitrogen, ammonia total [as N], maximum weekly average15 lb/d≤ 11.2 lb/d34%
March 2026Nitrogen, ammonia total [as N], maximum weekly average3.9 mg/L≤ 2.8 mg/L39%
April 2026Chlorine, total residual, daily maximum.36 mg/L< .06 mg/L500%
April 2026Chlorine, total residual, monthly average.11 mg/L< .06 mg/L83%
April 2026E. coli, colony forming units [CFU], daily maximum2420 CFU/100mL≤ 235 CFU/100mL930%
April 2026E. coli, colony forming units [CFU], monthly geometric mean151 CFU/100mL≤ 125 CFU/100mL21%
April 2026Nitrogen, ammonia total [as N], monthly average2.5 mg/L≤ 1.9 mg/L32%
April 2026Nitrogen, ammonia total [as N], maximum weekly average17.6 lb/d≤ 11.2 lb/d57%
April 2026Nitrogen, ammonia total [as N], maximum weekly average9.6 mg/L≤ 2.8 mg/L243%
May 2026Nitrogen, ammonia total [as N], monthly average1.9 mg/L≤ 1.3 mg/L46%
May 2026Nitrogen, ammonia total [as N], maximum weekly average3.8 mg/L≤ 1.9 mg/L100%
May 2026Nitrogen, ammonia total [as N], maximum weekly average9.8 lb/d≤ 7.6 lb/d29%
June 2026Nitrogen, ammonia total [as N], monthly average1.6 mg/L≤ 1.3 mg/L23%
June 2026Nitrogen, ammonia total [as N], maximum weekly average3.05 mg/L≤ 1.9 mg/L61%
June 2026Oxygen, dissolved [DO], daily average minimum4.7 mg/L≥ 6 mg/L22%
July 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average31.5 mg/L≤ 30 mg/L5%
July 2026Nitrogen, ammonia total [as N], monthly average15.1 lb/d≤ 5.2 lb/d190%
July 2026Nitrogen, ammonia total [as N], monthly average7.5 mg/L≤ 1.3 mg/L477%
July 2026Nitrogen, ammonia total [as N], maximum weekly average18.9 mg/L≤ 1.9 mg/L895%
July 2026Nitrogen, ammonia total [as N], maximum weekly average35.8 lb/d≤ 7.6 lb/d371%
July 2026Oxygen, dissolved [DO], daily average minimum5.03 mg/L≥ 6 mg/L16%
July 2026Solids, total suspended, maximum weekly average39.3 mg/L≤ 36 mg/L9%
August 2026Nitrogen, ammonia total [as N], monthly average11.01 lb/d≤ 5.2 lb/d112%
August 2026Nitrogen, ammonia total [as N], monthly average4.8 mg/L≤ 1.3 mg/L269%
August 2026Nitrogen, ammonia total [as N], maximum weekly average10.2 mg/L≤ 1.9 mg/L437%
August 2026Nitrogen, ammonia total [as N], maximum weekly average19.7 lb/d≤ 7.6 lb/d159%

Limits in force (36)

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≤ 30 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 24 mg/LMay–Nov
Solids, total suspendedmaximum weekly average≤ 45 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 36 mg/LMay–Nov
Solids, total suspendedmonthly average≤ 120.2 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 96.1 lb/dMay–Nov
Solids, total suspendedmaximum weekly average≤ 180.3 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 144.2 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.9 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.8 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5.2 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 7.6 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 7.6 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 11.2 lb/dJan, Feb, Mar, Apr, Dec
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/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 30 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 100.1 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 80.1 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 160.2 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 120.2 lb/dMay–Nov
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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