Non-Compliance
Clean Water Act
UC DAVIS WWTP
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $9,000 in total penalties since records began.
- Address
-
1140 OLD DAVIS ROAD
DAVIS, CA 95616
View on map ↗ - County
- YOLO County
- Inspections
- 2 · last Jun 13, 2024
- Total Penalties
- $9,000 · last Sep 24, 2024
- Registry ID
- 110064609437
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.
12
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 | Effluent Violations - Unauthorized Discharge | Mar 24, 2022 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Aug 1, 2019 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Jul 23, 2019 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | May 16, 2019 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Mar 8, 2019 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Feb 13, 2019 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Jan 17, 2019 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Mar 3, 2018 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Mar 2, 2018 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Nov 24, 1999 | — | 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 |
|---|---|---|---|---|---|---|
| Nitrite + Nitrate total [as N] | DMR, Limited - Numeric Violation | 12.00 mg/L | 10.00 | +20% | Nov 2025 | Open |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 32.50 % | 25.00 | +30% | Sep 2025 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 3.30 MPN/100mL | 2.20 | +50% | May 2025 | Open |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 57.90 % | 25.00 | +132% | Mar 2025 | Open |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 16.00 toxic | 16.00 | +99,999% | Mar 2025 | Open |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 46.00 % | 25.00 | +84% | Dec 2024 | Open |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 16.00 toxic | 16.00 | +99,999% | Dec 2024 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 16.00 mg/L | 15.00 | +7% | Oct 2024 | Open |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 16.00 toxic | 16.00 | +99,999% | Jun 2024 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 13.00 mg/L | 10.00 | +30% | Dec 2023 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 13.00 MPN/100mL | 2.20 | +491% | Apr 2023 | Open |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 17.20 toxic | 16.00 | +8% | Dec 2021 | Open |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 25.77 % | 25.00 | +3% | Dec 2021 | Open |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 100.00 % | 25.00 | +300% | Jun 2021 | Open |
| Nitrite + Nitrate total [as N] | DMR, Limited - Numeric Violation | 12.00 mg/L | 10.00 | +20% | May 2021 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 2.25 MPN/100mL | 2.20 | +2% | Apr 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.34 mg/L | 2.90 | +15% | Jan 2016 | 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 Penalty AO
Clean Water Act
· Case CA-CFEA457520 · Sep 24, 2024
$9,000
State CWA Non Penalty AO
Clean Water Act
· Case CA-N00004225 · Mar 18, 2004
State CWA Non Penalty AO
Clean Water Act
· Case CA-N00001590 · Jan 30, 2003
State CWA Penalty AO
Clean Water Act
· Case CA-N00000673 · Apr 16, 2001
State CWA Non Penalty AO
Clean Water Act
· Case CA-N00001589 · Oct 24, 1997
State CWA Non Penalty AO
Clean Water Act
· Case CA-N00001588 · Oct 27, 1989
CWA 309A AO For Compliance
Clean Water Act
· Case 09-1988-N021 · Oct 7, 1987
State CWA Non Penalty AO
Clean Water Act
· Case CA-N00001587 · Apr 26, 1985
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