Non-Compliance
Clean Water Act
MARICOPA COUNTY MS4
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
-
NO ADDRESS ON FILE
UNKNOWN, AZ 85533
View on map ↗ - County
- MARICOPA County
- Inspections
- 24 · last Feb 19, 2026
- Total Penalties
- $0
- Registry ID
- 110071275628
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.
2
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 | Failure to comply with a requirement regarding Other Applicable MS4 Permit Requirements | Feb 19, 2026 | — | Open |
| cwa | Failure to develop, maintain, or get approval of an adequate Stormwater Management Plan (SWMP) | Feb 19, 2026 | — | Open |
| cwa | Failure to develop a complete map of the MS4 system | Feb 19, 2026 | — | Open |
| cwa | Failure to comply with a requirement regarding Post-Construction Runoff Control | Feb 19, 2026 | — | Open |
| cwa | Failure to comply with a requirement regarding Construction Site Runoff Control | Feb 19, 2026 | — | Open |
| cwa | Failure to comply with monitoring requirements related to MS4 program [40 CFR 122.41(j)] | Feb 19, 2026 | — | Open |
| cwa | Failure to comply with a requirement regarding Illicit Discharge Detection and Elimination | Feb 19, 2026 | — | Open |
| cwa | Failure to submit CSO information to the permitting authority (Not Related to Program Report or DMR) | Jun 18, 2025 | — | Open |
| cwa | Failure to comply with a requirement regarding Construction Site Runoff Control | Feb 19, 2025 | — | Open |
| cwa | Failure to comply with a requirement regarding Illicit Discharge Detection and Elimination | Nov 14, 2024 | — | Open |
| cwa | Failure to comply with a requirement regarding Other Applicable MS4 Permit Requirements | Nov 14, 2024 | — | Open |
| cwa | Failure to comply with a requirement regarding Pollution Prevention / Good Housekeeping | Nov 14, 2024 | — | Open |
| cwa | Failure to comply with a requirement regarding Other Applicable MS4 Permit Requirements | Oct 11, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Illicit Discharge Detection and Elimination | Oct 11, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Construction Site Runoff Control | Oct 11, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Post-Construction Runoff Control | Oct 11, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Public Education and Outreach | Oct 11, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Post-Construction Runoff Control | Sep 7, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Illicit Discharge Detection and Elimination | Sep 7, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Construction Site Runoff Control | Sep 7, 2023 | — | Open |
| cwa | Other noncompliance related to a storm sewer system or discharges from a storm sewer system | Sep 7, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Other Applicable MS4 Permit Requirements | Sep 7, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Pollution Prevention / Good Housekeeping | Sep 7, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Illicit Discharge Detection and Elimination | Sep 6, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Other Applicable MS4 Permit Requirements | Sep 6, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Post-Construction Runoff Control | Sep 6, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Pollution Prevention / Good Housekeeping | Sep 6, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Public Participation / Involvement | Sep 6, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Construction Site Runoff Control | Sep 6, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Public Education and Outreach | Sep 6, 2023 | — | Open |
| cwa | Failure to develop, maintain, or get approval of an adequate Stormwater Management Plan (SWMP) | Sep 6, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Post-Construction Runoff Control | Jan 10, 2023 | — | Open |
| cwa | Failure to comply with a requirement regarding Public Education and Outreach | Sep 28, 2022 | — | Open |
| cwa | Failure to comply with a requirement regarding Construction Site Runoff Control | Sep 28, 2022 | — | Open |
| cwa | Failure to comply with a requirement regarding Public Participation / Involvement | Sep 28, 2022 | — | Open |
| cwa | Failure to comply with a requirement regarding Illicit Discharge Detection and Elimination | Sep 28, 2022 | — | Open |
| cwa | Other noncompliance related to a storm sewer system or discharges from a storm sewer system | Sep 28, 2022 | — | Open |
| cwa | Failure to report MS4 information on the MS4 Program Report [40 CFR 122.34(d)(3) and 122.42(c)] | Sep 28, 2022 | — | Open |
| cwa | Failure to comply with a requirement regarding Pollution Prevention / Good Housekeeping | Sep 28, 2022 | — | Open |
| cwa | Failure to comply with recordkeeping requirements - MS4 or MS4 discharges [40 CFR 122.41(j)] | Sep 28, 2022 | — | Open |
| cwa | Failure to develop, maintain, or get approval of an adequate Stormwater Management Plan (SWMP) | Sep 28, 2022 | — | Open |
| cwa | Failure to comply with monitoring requirements related to MS4 program [40 CFR 122.41(j)] | Sep 28, 2022 | — | Open |
| cwa | Failure to comply with a requirement regarding Post-Construction Runoff Control | Sep 28, 2022 | — | Open |
| cwa | Failure to comply with a requirement regarding Other Applicable MS4 Permit Requirements | Sep 28, 2022 | — | 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 |
|---|---|---|---|---|---|---|
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 241,960.00 MPN/100mL | 575.00 | +41,980% | Oct 2025 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 9,840.00 MPN/100mL | 575.00 | +1,611% | Oct 2025 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 130,000.00 MPN/100mL | 575.00 | +22,509% | May 2025 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 15,150.00 MPN/100mL | 575.00 | +2,535% | May 2025 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 34,480.00 MPN/100mL | 575.00 | +5,897% | May 2025 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 15,530.00 MPN/100mL | 575.00 | +2,601% | May 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.99 mg/L | 0.01 | +13,867% | May 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.99 mg/L | 0.01 | +13,867% | May 2024 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 24,197.00 MPN/100mL | 575.00 | +4,108% | May 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.99 mg/L | 0.06 | +1,595% | May 2024 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 24,197.00 MPN/100mL | 575.00 | +4,108% | May 2024 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Overdue | 3,500.00 MPN/100mL | 575.00 | +509% | Oct 2023 | Resolved |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 3,500.00 MPN/100mL | 575.00 | +509% | Oct 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | 1.00 mg/L | 0.00 | +797,030% | Oct 2023 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.00 mg/L | 0.00 | +797,030% | Oct 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.00 mg/L | 0.00 | +504,849% | May 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.00 mg/L | 0.41 | +144% | May 2023 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 575.00 | +321% | May 2023 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 575.00 | +321% | May 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.00 mg/L | 0.00 | +581,126% | Oct 2022 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 575.00 | +321% | Oct 2022 | 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 AZ-N00016325 · Oct 23, 2024
State Administrative Order of Consent
Clean Water Act
· Case AZ-N00012119 · Mar 9, 2023
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