Non-Compliance
Clean Water Act
SHELL ROCK WWTP
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
-
24130 WOODS AVE
SHELL ROCK, IA 50670
View on map ↗ - County
- BUTLER County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221320
- Inspections
- 2 · last Oct 23, 2024
- Total Penalties
- $0
- Registry ID
- 110010035014
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.
9
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
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 |
|---|---|---|---|---|---|---|
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.13 kg/d | 0.10 | +23% | Aug 2025 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.19 kg/d | 0.10 | +82% | Aug 2025 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.15 kg/d | 0.10 | +52% | Jul 2025 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.16 kg/d | 0.10 | +59% | Jun 2025 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.15 kg/d | 0.10 | +48% | Apr 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 32.78 kg/d | 25.20 | +30% | Apr 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 26.00 mg/L | 25.00 | +4% | Feb 2025 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.39 kg/d | 0.10 | +285% | Oct 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 67.00 mg/L | 25.00 | +168% | Sep 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 67.00 mg/L | 40.00 | +68% | Sep 2024 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,459.55 MPN/100mL | 126.00 | +1,852% | Aug 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 140.00 mg/L | 120.00 | +17% | Aug 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 152.14 kg/d | 85.35 | +78% | Aug 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 71.67 kg/d | 26.33 | +172% | Aug 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 83.50 mg/L | 25.00 | +234% | Aug 2024 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 130.00 mg/L | 80.00 | +63% | Aug 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 209.92 kg/d | 128.03 | +64% | Aug 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 145.00 mg/L | 40.00 | +263% | Aug 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 115.45 kg/d | 42.68 | +171% | Aug 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.28 kg/d | 0.10 | +170% | Aug 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.10 kg/d | 0.10 | +2% | Jul 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 92.69 kg/d | 42.68 | +117% | Jul 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 60.72 kg/d | 26.33 | +131% | Jul 2024 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.27 kg/d | 0.10 | +165% | Jul 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 39.80 mg/L | 25.00 | +59% | Jul 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 50.00 mg/L | 40.00 | +25% | Jul 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.13 kg/d | 0.10 | +29% | Jun 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 31.62 kg/d | 26.33 | +20% | May 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 69.42 kg/d | 42.68 | +63% | May 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.11 kg/d | 0.10 | +7% | May 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 30.50 mg/L | 25.00 | +22% | May 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 63.00 mg/L | 40.00 | +58% | May 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.17 kg/d | 0.10 | +68% | May 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 139.60 mg/L | 25.00 | +458% | Apr 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 55.69 kg/d | 26.33 | +111% | Apr 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 77.63 kg/d | 42.68 | +82% | Apr 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 201.00 mg/L | 40.00 | +403% | Apr 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 79.35 kg/d | 42.68 | +86% | Mar 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 170.00 mg/L | 40.00 | +325% | Mar 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 60.17 kg/d | 26.33 | +128% | Mar 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 161.75 mg/L | 25.00 | +547% | Mar 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 27.29 kg/d | 26.33 | +4% | Feb 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 134.00 mg/L | 40.00 | +235% | Feb 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 87.00 mg/L | 25.00 | +248% | Feb 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 43.13 kg/d | 42.68 | +1% | Feb 2024 | Open |
| E. coli | DMR, Limited - Numeric Violation | 147.15 MPN/100mL | 126.00 | +17% | Jul 2023 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 47.00 mg/L | 40.00 | +18% | Jun 2023 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 31.25 mg/L | 25.00 | +25% | Jun 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 101.00 mg/L | 80.00 | +26% | Jun 2023 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 39.80 mg/L | 25.00 | +59% | May 2023 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.
State CWA Non Penalty AO
Clean Water Act
· Case IA-4187 · Jan 11, 1994
State CWA Non Penalty AO
Clean Water Act
· Case IA-N00000138 · Jan 11, 1994
State CWA Non Penalty AO
Clean Water Act
· Case IA-N4187 · Jan 11, 1994
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