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Lost Lake Utility District

Subdividers And Developers, Dixon, Illinois. NPDES permit IL0026590, in force until Oct 31, 2027. Last 12 months: over a limit 71 times (last August 2026), 22 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form 0 monthly (21 values), outfall INF form L monthly (4 values)
Renewal application due
May 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
34 values over a limit, 0 required values missing, 24 of 24 reports late

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

All 71 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], daily maximum18.1 mg/L≤ 3 mg/L503%
October 2025Nitrogen, ammonia total [as N], monthly average18.1 mg/L≤ 1.2 mg/L1408%
October 2025Nitrogen, ammonia total [as N], monthly average3.32 lb/d≤ 2.1 lb/d58%
October 2025Solids, total suspended, monthly average16 mg/L≤ 12 mg/L33%
November 2025Nitrogen, ammonia total [as N], daily maximum22 mg/L≤ 5.2 mg/L323%
November 2025Nitrogen, ammonia total [as N], monthly average22 mg/L≤ 1.7 mg/L1194%
November 2025Nitrogen, ammonia total [as N], monthly average4.04 lb/d≤ 2.9 lb/d39%
December 2025BOD, carbonaceous [5 day, 20 C], daily maximum30 mg/L≤ 20 mg/L50%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average30 mg/L≤ 10 mg/L200%
December 2025Nitrogen, ammonia total [as N], daily maximum38 mg/L≤ 5.2 mg/L631%
December 2025Nitrogen, ammonia total [as N], monthly average38 mg/L≤ 1.7 mg/L2135%
December 2025Nitrogen, ammonia total [as N], monthly average6.34 lb/d≤ 2.9 lb/d119%
December 2025Solids, total suspended, daily maximum28 mg/L≤ 24 mg/L17%
December 2025Solids, total suspended, monthly average28 mg/L≤ 12 mg/L133%
January 2026Nitrogen, ammonia total [as N], daily maximum10.51 lb/d≤ 8.9 lb/d18%
January 2026Nitrogen, ammonia total [as N], daily maximum63 mg/L≤ 5.2 mg/L1112%
January 2026Nitrogen, ammonia total [as N], monthly average10.51 lb/d≤ 2.9 lb/d262%
January 2026Nitrogen, ammonia total [as N], monthly average63 mg/L≤ 1.7 mg/L3606%
January 2026Solids, total suspended, daily maximum38 mg/L≤ 24 mg/L58%
January 2026Solids, total suspended, monthly average38 mg/L≤ 12 mg/L217%
February 2026BOD, carbonaceous [5 day, 20 C], daily maximum28 mg/L≤ 20 mg/L40%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average28 mg/L≤ 10 mg/L180%
February 2026Nitrogen, ammonia total [as N], daily maximum11.43 lb/d≤ 8.9 lb/d28%
February 2026Nitrogen, ammonia total [as N], daily maximum68.5 mg/L≤ 5.2 mg/L1217%
February 2026Nitrogen, ammonia total [as N], monthly average11.43 lb/d≤ 2.9 lb/d294%
February 2026Nitrogen, ammonia total [as N], monthly average68.5 mg/L≤ 1.7 mg/L3929%
February 2026Solids, total suspended, daily maximum36 mg/L≤ 24 mg/L50%
February 2026Solids, total suspended, monthly average36 mg/L≤ 12 mg/L200%
March 2026BOD, carbonaceous [5 day, 20 C], daily maximum40 mg/L≤ 20 mg/L100%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average40 mg/L≤ 10 mg/L300%
March 2026Nitrogen, ammonia total [as N], daily maximum11.03 lb/d≤ 8 lb/d38%
March 2026Nitrogen, ammonia total [as N], daily maximum63 mg/L≤ 4.7 mg/L1240%
March 2026Nitrogen, ammonia total [as N], monthly average11.03 lb/d≤ 2.6 lb/d324%
March 2026Nitrogen, ammonia total [as N], monthly average63 mg/L≤ 1.5 mg/L4100%
March 2026Nitrogen, ammonia total [as N], weekly average11.03 lb/d≤ 6.5 lb/d70%
March 2026Nitrogen, ammonia total [as N], weekly average63 mg/L≤ 3.8 mg/L1558%
March 2026Solids, total suspended, daily maximum34 mg/L≤ 24 mg/L42%
March 2026Solids, total suspended, monthly average34 mg/L≤ 12 mg/L183%
April 2026BOD, carbonaceous [5 day, 20 C], daily maximum36 mg/L≤ 20 mg/L80%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average36 mg/L≤ 10 mg/L260%
April 2026Nitrogen, ammonia total [as N], daily maximum41.2 mg/L≤ 3 mg/L1273%
April 2026Nitrogen, ammonia total [as N], daily maximum7.22 lb/d≤ 5.1 lb/d42%
April 2026Nitrogen, ammonia total [as N], monthly average41.2 mg/L≤ 1.2 mg/L3333%
April 2026Nitrogen, ammonia total [as N], monthly average7.22 lb/d≤ 2.1 lb/d244%
April 2026Solids, total suspended, daily maximum34 mg/L≤ 24 mg/L42%
April 2026Solids, total suspended, monthly average34 mg/L≤ 12 mg/L183%
May 2026Coliform, fecal general, daily maximumT≤ 400 #/100mL—
May 2026Nitrogen, ammonia total [as N], daily maximum52.5 mg/L≤ 3 mg/L1650%
May 2026Nitrogen, ammonia total [as N], daily maximum8.76 lb/d≤ 5.1 lb/d72%
May 2026Nitrogen, ammonia total [as N], monthly average52.5 mg/L≤ 1.2 mg/L4275%
May 2026Nitrogen, ammonia total [as N], monthly average8.76 lb/d≤ 2.1 lb/d317%
May 2026Solids, total suspended, daily maximum28 mg/L≤ 24 mg/L17%
May 2026Solids, total suspended, monthly average28 mg/L≤ 12 mg/L133%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average16 mg/L≤ 10 mg/L60%
June 2026Coliform, fecal general, daily maximumT≤ 400 #/100mL—
June 2026Nitrogen, ammonia total [as N], daily maximum10.83 lb/d≤ 5.1 lb/d112%
June 2026Nitrogen, ammonia total [as N], daily maximum43.3 mg/L≤ 3 mg/L1343%
June 2026Nitrogen, ammonia total [as N], monthly average43.3 mg/L≤ 1.1 mg/L3836%
June 2026Nitrogen, ammonia total [as N], monthly average8.31 lb/d≤ 1.9 lb/d337%
June 2026Nitrogen, ammonia total [as N], weekly average43.3 mg/L≤ 2.8 mg/L1446%
June 2026Nitrogen, ammonia total [as N], weekly average8.31 lb/d≤ 4.8 lb/d73%
July 2026Nitrogen, ammonia total [as N], daily maximum25.6 mg/L≤ 3 mg/L753%
July 2026Nitrogen, ammonia total [as N], daily maximum6.41 lb/d≤ 5.1 lb/d26%
July 2026Nitrogen, ammonia total [as N], monthly average25.6 mg/L≤ 1.1 mg/L2227%
July 2026Nitrogen, ammonia total [as N], monthly average4.91 lb/d≤ 1.9 lb/d158%
July 2026Nitrogen, ammonia total [as N], weekly average25.6 mg/L≤ 2.8 mg/L814%
July 2026Nitrogen, ammonia total [as N], weekly average4.91 lb/d≤ 4.8 lb/d2%
August 2026Coliform, fecal general, daily maximum1340 #/100mL≤ 400 #/100mL235%
August 2026Nitrogen, ammonia total [as N], daily maximum7.05 mg/L≤ 3 mg/L135%
August 2026Nitrogen, ammonia total [as N], monthly average7.05 mg/L≤ 1.1 mg/L541%
August 2026Nitrogen, ammonia total [as N], weekly average7.05 mg/L≤ 2.8 mg/L152%

Limits in force (43)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]minimum weekly average≥ 4 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/LMar–Jul001
Oxygen, dissolved [DO]daily minimum≥ 3.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar–Jul001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 12 mg/Lall year001
Solids, total suspendeddaily maximum≤ 24 mg/Lall year001
Solids, total suspendedmonthly average≤ 21 lb/dall year001
Solids, total suspendeddaily maximum≤ 41 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMar001
Nitrogen, ammonia total [as N]monthly average≤ 1.2 mg/LApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.1 mg/LJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 1.7 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 4.7 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 5.2 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2.6 lb/dMar001
Nitrogen, ammonia total [as N]monthly average≤ 2.1 lb/dApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.9 lb/dJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 2.9 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 8 lb/dMar001
Nitrogen, ammonia total [as N]daily maximum≤ 5.1 lb/dApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 5.1 lb/dJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 8.9 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 2.8 mg/LJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LMar001
Nitrogen, ammonia total [as N]weekly average≤ 4.8 lb/dJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 6.5 lb/dMar001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximum≤ .05 mg/Lall year001
Coliform, fecal generaldaily maximum≤ 400 #/100mLMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 17 lb/dall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 34 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearINF
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF

How strict are these limits?

Cited limits by parameter: Illinois's rules and the federal ones.

Same industry: the 76 Real Estate permits in Illinois.

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