EmissionsLookup
Non-Compliance Clean Water Act

LAKE MILLS SEWAGE TREATMENT PLANT (STP)

Quick Summary

  • Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
  • Assessed $0 in total penalties since records began.
Address
893-575 US-69
LAKE MILLS, IA 50450
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County
WINNEBAGO County
Industry
Utilities
NAICS (North American Industry Classification)
221320
Inspections
1 · last Mar 17, 2023
Total Penalties
$0
Registry ID
110010035700

Compliance Status (Last 12 Quarters)

Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.

11
Water (CWA)
Qtrs Non-Compliant

Compliance Violations

Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.

Program Type Violation Date Return to Compliance Status
cwa Schedule Event reported late Dec 1, 2024 Open
cwa Schedule Event unachieved but reported Dec 1, 2024 Apr 17, 2025 Resolved
cwa Schedule Event unachieved and not reported Dec 1, 2024 Apr 17, 2025 Resolved
cwa Schedule Event reported late Dec 1, 2024 Open
cwa Schedule Event unachieved and not reported Dec 1, 2024 Apr 17, 2025 Resolved
cwa Schedule Event achieved late but reported Dec 1, 2024 Open
cwa Schedule Event achieved late but reported Dec 1, 2024 Open
cwa Schedule Event unachieved but reported Dec 1, 2024 Apr 17, 2025 Resolved
cwa Schedule Event reported late Mar 1, 2023 Open
cwa Schedule Event achieved late but reported Mar 1, 2023 Open
cwa Schedule Event unachieved but reported Sep 1, 2022 Dec 12, 2022 Resolved
cwa Schedule Event unachieved and not reported Sep 1, 2022 Jan 4, 2023 Resolved
cwa Schedule Event reported late Sep 1, 2022 Open
cwa Schedule Event achieved late but reported Sep 1, 2022 Open
cwa Schedule Event reported late Nov 1, 2021 Open
cwa Schedule Event achieved late but reported Nov 1, 2021 Open
cwa Schedule Event achieved late but reported Mar 1, 2019 Open
cwa Schedule Event achieved late but reported Jun 1, 2018 Open
cwa Schedule Event reported late Jun 1, 2018 Open
cwa Schedule Event reported late Mar 1, 2018 Open
cwa Schedule Event achieved late but reported Mar 1, 2018 Open
cwa Schedule Event achieved late but reported Jun 1, 2017 Open
cwa Schedule Event reported late Jun 1, 2017 Open

Discharge Limit Exceedances

Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.

Pollutant Violation Reported Limit Exceedance Period Status
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 5.40 mg/L 3.40 +59% Jan 2026 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 3.90 mg/L 5.00 +22% Jan 2026 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 3.06 mg/L 2.50 +23% Dec 2025 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 3.38 mg/L 2.70 +25% Nov 2025 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 2.43 mg/L 2.30 +6% Nov 2025 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 3.60 mg/L 5.00 +28% Sep 2025 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 2.94 mg/L 2.70 +9% Sep 2025 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 3.20 mg/L 5.00 +36% Aug 2025 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 3.40 mg/L 5.00 +32% Jul 2025 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 2.06 mg/L 1.30 +59% Jun 2025 Resolved
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 4.40 mg/L 5.00 +12% Jun 2025 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 3.87 mg/L 3.20 +21% Jun 2025 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 9.35 kg/d 9.08 +3% May 2025 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 6.45 mg/L 3.20 +102% May 2025 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 3.50 mg/L 5.00 +30% May 2025 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 3.47 mg/L 1.70 +104% May 2025 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 5.58 mg/L 4.70 +19% Apr 2025 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 4.35 kg/d 4.31 +1% Apr 2025 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 3.66 mg/L 1.50 +144% Apr 2025 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 7.46 mg/L 3.90 +91% Mar 2025 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 6.57 mg/L 3.40 +93% Mar 2025 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 4.59 mg/L 4.00 +15% Feb 2025 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 5.46 mg/L 3.90 +40% Dec 2024 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 4.50 mg/L 5.00 +10% Aug 2024 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 3.43 mg/L 3.20 +7% Jun 2024 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 1.47 mg/L 1.30 +13% Jun 2024 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 1.82 mg/L 1.70 +7% May 2024 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 2.50 mg/L 5.00 +50% May 2024 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 3.76 mg/L 3.20 +17% May 2024 Open
BOD, carbonaceous [5 day, 20 C] DMR, Limited - Numeric Violation 44.00 mg/L 40.00 +10% Apr 2024 Open
BOD, carbonaceous [5 day, 20 C] DMR, Limited - Numeric Violation 25.38 mg/L 25.00 +2% Mar 2024 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 3.41 mg/L 2.50 +36% Dec 2023 Open
BOD, carbonaceous [5 day, 20 C] DMR, Limited - Numeric Violation 12.50 mg/L 11.00 +14% Aug 2023 Open
BOD, carbonaceous [5 day, 20 C] DMR, Limited - Numeric Violation 18.00 mg/L 16.00 +13% Aug 2023 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 3.11 mg/L 5.00 +38% Jun 2023 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 4.20 mg/L 5.00 +16% May 2023 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 2.90 mg/L 5.00 +42% Jan 2022 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 4.00 mg/L 5.00 +20% Aug 2021 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 4.30 mg/L 5.00 +14% Jul 2021 Open
BOD, carbonaceous [5 day, 20 C] DMR, Limited - Numeric Violation 20.00 mg/L 16.00 +25% Aug 2018 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 4.30 mg/L 5.00 +14% Jun 2018 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 4.90 mg/L 5.00 +2% May 2018 Open
BOD, carbonaceous [5 day, 20 C] DMR, Limited - Numeric Violation 89.15 kg/d 85.35 +4% May 2018 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 11.63 mg/L 9.10 +28% Apr 2018 Open
BOD, carbonaceous [5 day, 20 C] DMR, Limited - Numeric Violation 31.00 mg/L 30.00 +3% Nov 2017 Open
BOD, carbonaceous [5 day, 20 C] DMR, Limited - Numeric Violation 19.00 mg/L 16.00 +19% Aug 2017 Open
Oxygen, dissolved [DO] DMR, Limited - Numeric Violation 4.00 mg/L 5.00 +20% Jun 2017 Open
Flow, in conduit or thru treatment plant DMR, Limited - Numeric Violation 0.77 MGD 0.75 +3% Sep 2016 Open
Flow, in conduit or thru treatment plant DMR, Limited - Numeric Violation 1.67 MGD 1.00 +67% Sep 2016 Open
Flow, in conduit or thru treatment plant DMR, Limited - Numeric Violation 1.64 MGD 1.00 +64% Aug 2016 Open

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