Non-Compliance
Clean Water Act
NORTHWEST WWTF
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $6,000 in total penalties since records began.
- Address
-
3000 AIRPORT RD
RIO VISTA, CA 94571
View on map ↗ - County
- SOLANO County
- Inspections
- 3 · last Feb 20, 2025
- Total Penalties
- $6,000 · last Sep 8, 2022
- Registry ID
- 110006657439
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
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 | Permit Violations - Violation Specified in Comment | Dec 3, 2024 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Oct 15, 2024 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Dec 17, 2021 | — | Open |
| cwa | Effluent Violations - Unauthorized Discharge | Dec 17, 2021 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Oct 27, 2021 | — | Open |
| cwa | Effluent Violations - Unauthorized Discharge | Oct 27, 2021 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | May 15, 2018 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | May 13, 2018 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Mar 31, 2004 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Feb 29, 2004 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jan 31, 2004 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | May 31, 2003 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Mar 31, 2003 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Feb 28, 2003 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jan 31, 2003 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Dec 31, 2002 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Nov 30, 2002 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Oct 31, 2002 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Sep 30, 2002 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Aug 31, 2002 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jul 31, 2002 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | May 31, 2002 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Apr 30, 2002 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Mar 31, 2002 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jan 27, 2002 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Jan 4, 2002 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | May 10, 2000 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Mar 21, 2000 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jan 20, 2000 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Nov 5, 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 |
|---|---|---|---|---|---|---|
| Mercury, total recoverable | DMR, Limited - Numeric Violation | 0.00 kg/d | 0.00 | +10% | Dec 2024 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 77.60 deg F | 20.00 | +288% | Apr 2024 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 81.30 deg F | 20.00 | +307% | Jul 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.08 mg/L | 1.30 | +60% | Nov 2022 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 21.30 deg F | 20.00 | +7% | Jan 2022 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 800.00 MPN/100mL | 23.00 | +3,378% | Jan 2021 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 56.40 mg/L | 15.00 | +276% | Sep 2020 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 56.40 mg/L | 20.00 | +182% | Sep 2020 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 14.80 mg/L | 10.00 | +48% | Sep 2020 | Open |
| Specific conductance | DMR, Limited - Numeric Violation | 1,551.66 umho/cm | 1,500.00 | +3% | Dec 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 22.60 mg/L | 15.00 | +51% | Jul 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 22.60 mg/L | 20.00 | +13% | Jul 2019 | Open |
| Specific conductance | DMR, Limited - Numeric Violation | 1,573.00 umho/cm | 1,500.00 | +5% | Dec 2018 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 181.00 MPN/100mL | 23.00 | +687% | Apr 2018 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 72.40 deg F | 20.00 | +262% | Apr 2017 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 69.50 deg F | 20.00 | +248% | Jan 2017 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 72.60 deg F | 20.00 | +263% | Dec 2016 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 79.00 deg F | 20.00 | +295% | Oct 2016 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 71.50 deg F | 20.00 | +258% | Mar 2016 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 70.20 deg F | 20.00 | +251% | Feb 2016 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 83.10 deg F | 20.00 | +316% | Aug 2015 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 75.10 deg F | 20.00 | +276% | May 2015 | Open |
| Temperature, water deg. fahrenheit | DMR, Limited - Numeric Violation | 70.70 deg F | 20.00 | +254% | Feb 2015 | 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-N00003770
State CWA Penalty AO
Clean Water Act
· Case CA-CFEA448458 · Sep 8, 2022
$6,000
State CWA Penalty AO
Clean Water Act
· Case CA-2013-1068 · May 14, 2013
State CWA Penalty AO
Clean Water Act
· Case CA-2011-1063 · Jan 28, 2011
$1,000,000
State CWA Non Penalty AO
Clean Water Act
· Case CA-N00001820 · Jul 9, 2004
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