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Mobile Home Site Operators, Marseilles, Illinois. NPDES permit IL0070351, in force until Apr 30, 2027. Last 12 months: over a limit 38 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form 0 monthly (23 values), outfall INF form L monthly (4 values)
Renewal application due
Nov 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
75 values over a limit, 0 required values missing, 0 of 24 reports late

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

All 38 values over a limit
Period endingParameterReportedLimitOver by
October 2025Coliform, fecal general, daily maximum2400 #/100mL≤ 400 #/100mL500%
October 2025Nitrogen, ammonia total [as N], daily maximum1.21 lb/d≤ .75 lb/d61%
October 2025Nitrogen, ammonia total [as N], daily maximum7.3 mg/L≤ 3.9 mg/L87%
October 2025Nitrogen, ammonia total [as N], monthly average1.21 lb/d≤ .23 lb/d426%
October 2025Nitrogen, ammonia total [as N], monthly average7.3 mg/L≤ 1.2 mg/L508%
October 2025Nitrogen, ammonia total [as N], weekly average1.21 lb/d≤ .63 lb/d92%
October 2025Nitrogen, ammonia total [as N], weekly average7.3 mg/L≤ 3.3 mg/L121%
November 2025Nitrogen, ammonia total [as N], monthly average.459 lb/d≤ .42 lb/d9%
January 2026Coliform, fecal general, daily maximum1700 #/100mL≤ 400 #/100mL325%
January 2026Nitrogen, ammonia total [as N], daily maximum4.2 mg/L≤ 2.9 mg/L45%
January 2026Nitrogen, ammonia total [as N], monthly average4.2 mg/L≤ 2.2 mg/L91%
February 2026Chlorine, total residual, daily maximum< .1 mg/L≤ .05 mg/L100%
February 2026Nitrogen, ammonia total [as N], daily maximum4 mg/L≤ 2.9 mg/L38%
February 2026Nitrogen, ammonia total [as N], monthly average4 mg/L≤ 2.2 mg/L82%
March 2026BOD, carbonaceous [5 day, 20 C], daily maximum27 mg/L≤ 20 mg/L35%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average27 mg/L≤ 10 mg/L170%
March 2026Chlorine, total residual, daily maximum.54 mg/L≤ .05 mg/L980%
March 2026Coliform, fecal general, daily maximum2420 #/100mL≤ 400 #/100mL505%
March 2026Nitrogen, ammonia total [as N], monthly average2.4 mg/L≤ 1.3 mg/L85%
April 2026Chlorine, total residual, daily maximum.16 mg/L≤ .05 mg/L220%
April 2026Coliform, fecal general, daily maximum921 #/100mL≤ 400 #/100mL130%
April 2026Nitrogen, ammonia total [as N], monthly average.567 lb/d≤ .23 lb/d147%
April 2026Nitrogen, ammonia total [as N], monthly average3.4 mg/L≤ 1.2 mg/L183%
April 2026Nitrogen, ammonia total [as N], weekly average3.4 mg/L≤ 3.3 mg/L3%
May 2026Chlorine, total residual, daily maximum.49 mg/L≤ .05 mg/L880%
May 2026Nitrogen, ammonia total [as N], daily maximum.8 lb/d≤ .75 lb/d7%
May 2026Nitrogen, ammonia total [as N], monthly average.8 lb/d≤ .23 lb/d248%
May 2026Nitrogen, ammonia total [as N], monthly average3.7 mg/L≤ 1.2 mg/L208%
May 2026Nitrogen, ammonia total [as N], weekly average.8 lb/d≤ .63 lb/d27%
May 2026Nitrogen, ammonia total [as N], weekly average3.7 mg/L≤ 3.3 mg/L12%
June 2026Chlorine, total residual, daily maximum.1 mg/L≤ .05 mg/L100%
June 2026Nitrogen, ammonia total [as N], monthly average.6 lb/d≤ .21 lb/d186%
June 2026Nitrogen, ammonia total [as N], monthly average2.7 mg/L≤ 1.1 mg/L145%
June 2026Nitrogen, ammonia total [as N], weekly average.6 lb/d≤ .54 lb/d11%
June 2026Oxygen, dissolved [DO], daily minimum4 mg/L≥ 5 mg/L20%
June 2026Oxygen, dissolved [DO], minimum weekly average4 mg/L≥ 6 mg/L33%
July 2026Chlorine, total residual, daily maximum.1 mg/L≤ .05 mg/L100%
August 2026Chlorine, total residual, daily maximum.1 mg/L≤ .05 mg/L100%

Limits in force (45)

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≤ 2.3 lb/dall year001
Solids, total suspendeddaily maximum≤ 4.6 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 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≤ 2.2 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 4.4 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 2.9 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .25 lb/dMar001
Nitrogen, ammonia total [as N]monthly average≤ .23 lb/dApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ .21 lb/dJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ .42 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ .84 lb/dMar001
Nitrogen, ammonia total [as N]daily maximum≤ .75 lb/dApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ .75 lb/dJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ .56 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 2.8 mg/LJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 3.3 mg/LMar001
Nitrogen, ammonia total [as N]weekly average≤ 3.3 mg/LApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]weekly average≤ .54 lb/dJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ .63 lb/dMar001
Nitrogen, ammonia total [as N]weekly average≤ .63 lb/dApr, May, Sep, Oct001
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 #/100mLall year001
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≤ 1.9 lb/dall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 3.8 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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