Non-Compliance
Clean Water Act
STONEWALL UTILITY COMPANY 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
-
WEST SIDE OF ROUTE 83, NORTH
OAKBROOK TERRACE, IL 60181
View on map ↗ - County
- DU PAGE County
- Total Penalties
- $0
- Registry ID
- 110012675541
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.
10
Water (CWA)
Qtrs Non-Compliant
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 unachieved and not reported | Jan 31, 2026 | Mar 3, 2026 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2025 | Aug 31, 2025 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jan 31, 2025 | Mar 3, 2025 | Resolved |
| cwa | Schedule Event unachieved but reported | Jul 31, 2021 | Oct 18, 2021 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2021 | Oct 18, 2021 | Resolved |
| cwa | Schedule Event reported late | Jul 31, 2021 | — | Open |
| cwa | Schedule Event achieved late but reported | Jul 31, 2021 | — | Open |
| cwa | Schedule Event unachieved but reported | Jan 31, 2021 | Oct 18, 2021 | Resolved |
| cwa | Schedule Event reported late | Jan 31, 2021 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jan 31, 2021 | Oct 18, 2021 | Resolved |
| cwa | Schedule Event achieved late but reported | Jan 31, 2021 | — | Open |
| cwa | Failure to conduct required sampling and analysis | Jan 12, 2021 | Jan 12, 2021 | Resolved |
| cwa | Schedule Event reported late | Jul 31, 2020 | — | Open |
| cwa | Schedule Event achieved late but reported | Jul 31, 2020 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2020 | Oct 18, 2021 | Resolved |
| cwa | Schedule Event unachieved but reported | Jul 31, 2020 | Oct 18, 2021 | Resolved |
| cwa | Schedule Event reported late | Jan 31, 2020 | — | Open |
| cwa | Schedule Event unachieved but reported | Jan 31, 2020 | Oct 18, 2021 | Resolved |
| cwa | Schedule Event achieved late but reported | Jan 31, 2020 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jan 31, 2020 | Oct 18, 2021 | Resolved |
| cwa | Schedule Event achieved late but reported | Jul 31, 2016 | — | Open |
| cwa | Schedule Event reported late | Jul 31, 2016 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2016 | Oct 11, 2016 | Resolved |
| cwa | Schedule Event unachieved but reported | Jul 31, 2016 | Oct 11, 2016 | Resolved |
| cwa | Schedule Event achieved late but reported | Jan 31, 2016 | — | Open |
| cwa | Schedule Event reported late | Jan 31, 2016 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jan 31, 2016 | Oct 11, 2016 | Resolved |
| cwa | Schedule Event unachieved but reported | Jan 31, 2016 | Oct 11, 2016 | Resolved |
| cwa | Schedule Event achieved late but reported | Jul 31, 2015 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2015 | Oct 11, 2016 | Resolved |
| cwa | Schedule Event reported late | Jul 31, 2015 | — | Open |
| cwa | Schedule Event unachieved but reported | Jul 31, 2015 | Oct 11, 2016 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jan 31, 2015 | Oct 11, 2016 | Resolved |
| cwa | Schedule Event reported late | Jan 31, 2015 | — | Open |
| cwa | Schedule Event achieved late but reported | Jan 31, 2015 | — | Open |
| cwa | Schedule Event unachieved but reported | Jan 31, 2015 | Oct 11, 2016 | Resolved |
| cwa | Schedule Event unachieved but reported | Jul 31, 2014 | Oct 11, 2016 | Resolved |
| cwa | Schedule Event achieved late but reported | Jul 31, 2014 | — | Open |
| cwa | Schedule Event reported late | Jul 31, 2014 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2014 | Oct 11, 2016 | Resolved |
| cwa | Schedule Event unachieved but reported | Jan 31, 2014 | Mar 3, 2014 | Resolved |
| cwa | Schedule Event achieved late but reported | Jan 31, 2014 | — | Open |
| cwa | Schedule Event reported late | Jan 31, 2014 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jan 31, 2014 | Mar 3, 2014 | Resolved |
| cwa | Schedule Event unachieved but reported | Jul 31, 2009 | Dec 31, 2009 | Resolved |
| cwa | Schedule Event achieved late but reported | Jul 31, 2009 | — | Open |
| cwa | Schedule Event reported late | Jul 31, 2009 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2009 | Dec 31, 2009 | Resolved |
| cwa | Schedule Event achieved late but reported | Jan 31, 2009 | — | Open |
| cwa | Schedule Event reported late | Jan 31, 2009 | — | 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 | 2.73 mg/L | 1.50 | +82% | Mar 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 19.80 mg/L | 12.00 | +65% | Nov 2022 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.25 mg/L | 1.50 | +183% | Oct 2022 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.25 mg/L | 3.00 | +42% | Oct 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 53.00 mg/L | 24.00 | +121% | May 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 53.00 mg/L | 12.00 | +342% | May 2022 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 3.95 kg/d | 2.63 | +50% | Dec 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 8.72 kg/d | 6.36 | +37% | Dec 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 8.72 kg/d | 3.18 | +174% | Dec 2021 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 26.20 mg/L | 24.00 | +9% | Oct 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 26.20 mg/L | 12.00 | +118% | Oct 2021 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 32.40 mg/L | 24.00 | +35% | Sep 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 32.40 mg/L | 12.00 | +170% | Sep 2021 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 16.00 mg/L | 12.00 | +33% | Aug 2021 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.75 mg/L | 3.00 | +25% | Sep 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.75 mg/L | 1.50 | +150% | Sep 2020 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.70 kg/d | 0.82 | +108% | Aug 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.70 kg/d | 0.40 | +326% | Aug 2020 | Resolved |
| Solids, total suspended | DMR, Limited - Overdue | 13.00 mg/L | 12.00 | +8% | Mar 2020 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 13.00 mg/L | 12.00 | +8% | Mar 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 29.30 mg/L | 24.00 | +22% | Oct 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 29.30 mg/L | 12.00 | +144% | Oct 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 50.00 mg/L | 12.00 | +317% | Sep 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 50.00 mg/L | 24.00 | +108% | Sep 2019 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 18.80 mg/L | 10.00 | +88% | Mar 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 23.00 mg/L | 12.00 | +92% | Mar 2019 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 19.30 mg/L | 10.00 | +93% | Jul 2017 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 65.00 mg/L | 24.00 | +171% | Jul 2017 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 65.00 mg/L | 12.00 | +442% | Jul 2017 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 18.80 mg/L | 12.00 | +57% | Mar 2017 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 28.10 mg/L | 10.00 | +181% | Feb 2017 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 84.00 mg/L | 24.00 | +250% | Feb 2017 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 28.10 mg/L | 20.00 | +41% | Feb 2017 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 84.00 mg/L | 12.00 | +600% | Feb 2017 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 19.80 mg/L | 12.00 | +65% | Jan 2017 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 2.77 kg/d | 2.63 | +5% | Dec 2016 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Overdue | 2.77 kg/d | 2.63 | +5% | Dec 2016 | Resolved |
| Solids, total suspended | DMR, Limited - Overdue | 39.95 kg/d | 6.36 | +529% | Dec 2016 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 39.95 kg/d | 3.18 | +1,157% | Dec 2016 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 39.95 kg/d | 6.36 | +529% | Dec 2016 | Open |
| Solids, total suspended | DMR, Limited - Overdue | 39.95 kg/d | 3.18 | +1,157% | Dec 2016 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 17.60 mg/L | 12.00 | +47% | Jan 2016 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 11.62 kg/d | 6.36 | +83% | Nov 2015 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 3.31 kg/d | 2.63 | +26% | Nov 2015 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 11.62 kg/d | 3.18 | +266% | Nov 2015 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.08 kg/d | 0.40 | +169% | Oct 2015 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | 1.08 kg/d | 0.40 | +169% | Oct 2015 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.08 kg/d | 0.82 | +32% | Oct 2015 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | 1.08 kg/d | 0.82 | +32% | Oct 2015 | Resolved |
| Solids, total suspended | DMR, Limited - Overdue | 4.18 kg/d | 3.18 | +31% | Oct 2015 | Resolved |
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 Administrative Order of Consent
Clean Water Act
· Case IL-0052817-1 · Mar 31, 2022
State Administrative Order of Consent
Clean Water Act
· Case IL-0052817 · Nov 15, 2021
State Administrative Order of Consent
Clean Water Act
· Case IL-N00006228 · Jan 6, 1997
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