Non-Compliance
Clean Water Act
WALLA WALLA 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
-
572 HATCH ST
WALLA WALLA, WA 99362
View on map ↗ - County
- WALLA WALLA County
- Inspections
- 3 · last Aug 12, 2025
- Total Penalties
- $0
- Registry ID
- 110000540335
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 | Schedule Event achieved late but reported | Jul 31, 2024 | — | Open |
| cwa | Schedule Event reported late | Jul 31, 2024 | — | Open |
| cwa | Schedule Event unachieved and not reported | Oct 28, 2020 | Nov 28, 2020 | Resolved |
| cwa | Schedule Event unachieved and not reported | Aug 30, 2020 | Sep 30, 2020 | Resolved |
| cwa | Schedule Event unachieved and not reported | Aug 30, 2020 | Sep 30, 2020 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2020 | Aug 31, 2020 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2020 | Aug 31, 2020 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jun 30, 2020 | Jul 31, 2020 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jun 30, 2020 | Jul 31, 2020 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jun 30, 2020 | Jul 31, 2020 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jun 30, 2020 | Jul 31, 2020 | Resolved |
| cwa | Schedule Event achieved late but reported | Jun 29, 2020 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jun 29, 2020 | Jul 30, 2020 | Resolved |
| cwa | Schedule Event achieved late but reported | Jun 29, 2020 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 1, 2020 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 1, 2020 | — | Open |
| cwa | Schedule Event unachieved and not reported | Mar 1, 2020 | Apr 1, 2020 | Resolved |
| cwa | Schedule Event unachieved and not reported | Aug 30, 2019 | Sep 30, 2019 | Resolved |
| cwa | Schedule Event unachieved and not reported | Aug 30, 2019 | Sep 30, 2019 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2019 | Aug 31, 2019 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2019 | Aug 31, 2019 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 1, 2019 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 1, 2019 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 1, 2019 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2018 | Aug 31, 2018 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2018 | Aug 31, 2018 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2018 | Aug 31, 2018 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2018 | Aug 31, 2018 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 1, 2018 | Aug 1, 2018 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 1, 2018 | Aug 1, 2018 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 1, 2018 | Aug 1, 2018 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 1, 2018 | Aug 1, 2018 | Resolved |
| cwa | Schedule Event unachieved and not reported | Mar 1, 2018 | Apr 1, 2018 | Resolved |
| cwa | Schedule Event unachieved and not reported | Nov 1, 2017 | Dec 2, 2017 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 1, 2017 | — | Open |
| cwa | Schedule Event unachieved but reported | Aug 30, 2016 | Aug 16, 2018 | Resolved |
| cwa | Schedule Event unachieved and not reported | Aug 30, 2016 | Aug 16, 2018 | Resolved |
| cwa | Schedule Event achieved late but reported | Aug 30, 2016 | — | Open |
| cwa | Schedule Event reported late | Aug 30, 2016 | — | Open |
| cwa | Schedule Event unachieved and not reported | Mar 1, 2016 | May 6, 2016 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 1, 2016 | — | Open |
| cwa | Schedule Event unachieved but reported | Mar 1, 2016 | May 6, 2016 | Resolved |
| cwa | Schedule Event unachieved but reported | Mar 1, 2016 | May 6, 2016 | Resolved |
| cwa | Schedule Event unachieved and not reported | Mar 1, 2016 | May 6, 2016 | Resolved |
| cwa | Schedule Event reported late | Mar 1, 2016 | — | Open |
| cwa | Schedule Event unachieved and not reported | Mar 1, 2016 | May 6, 2016 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 1, 2016 | — | Open |
| cwa | Schedule Event reported late | Mar 1, 2016 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 1, 2016 | — | Open |
| cwa | Schedule Event unachieved but reported | Mar 1, 2016 | May 6, 2016 | Resolved |
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 |
|---|---|---|---|---|---|---|
| Coliform, total general | DMR, Limited - Numeric Violation | 56.00 MPN/100mL | 23.00 | +143% | Sep 2025 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 59.10 MPN/100mL | 23.00 | +157% | Aug 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 5.72 mg/L | 3.08 | +86% | Jan 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 18.00 mg/L | 3.08 | +484% | Dec 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.82 mg/L | 1.45 | +508% | Dec 2024 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 105.00 MPN/100mL | 23.00 | +357% | Nov 2024 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 43.20 MPN/100mL | 23.00 | +88% | Oct 2024 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 28.50 MPN/100mL | 23.00 | +24% | Sep 2024 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 38.90 MPN/100mL | 23.00 | +69% | Aug 2024 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 98.80 MPN/100mL | 23.00 | +330% | Jul 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.83 mg/L | 3.08 | +57% | Apr 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.60 mg/L | 3.08 | +244% | Mar 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.70 mg/L | 1.45 | +86% | Mar 2024 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 27.00 MPN/100mL | 23.00 | +17% | Jul 2023 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 71.70 MPN/100mL | 23.00 | +212% | Jun 2023 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 44.30 MPN/100mL | 23.00 | +93% | Nov 2022 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 307.20 MPN/100mL | 23.00 | +1,236% | Oct 2022 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 178.20 MPN/100mL | 23.00 | +675% | Sep 2022 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 48.00 MPN/100mL | 23.00 | +109% | Aug 2022 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 115.30 MPN/100mL | 23.00 | +401% | Jul 2022 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 35.90 MPN/100mL | 23.00 | +56% | May 2022 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 17.80 mg/L | 15.00 | +19% | Apr 2022 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 17.80 mg/L | 10.00 | +78% | Apr 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 45.30 mg/L | 10.00 | +353% | Apr 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 886.75 kg/d | 363.20 | +144% | Apr 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 45.30 mg/L | 15.00 | +202% | Apr 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 886.75 kg/d | 544.80 | +63% | Apr 2022 | Open |
| Solids, suspended percent removal | DMR, Limited - Numeric Violation | 79.00 % | 85.00 | +40% | Apr 2022 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 1,553.10 MPN/100mL | 23.00 | +6,653% | Nov 2021 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 23.30 MPN/100mL | 23.00 | +1% | Oct 2021 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 66.10 MPN/100mL | 23.00 | +187% | Sep 2021 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 46.80 MPN/100mL | 23.00 | +103% | Jun 2021 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.34 mg/L | 3.08 | +8% | Feb 2021 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +11% | Jan 2021 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 6.53 mg/L | 3.08 | +112% | Dec 2020 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.83 mg/L | 0.01 | +9,085% | Dec 2020 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 2.45 mg/L | 0.02 | +13,587% | Dec 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.01 mg/L | 1.45 | +39% | Dec 2020 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 45.90 MPN/100mL | 23.00 | +100% | Oct 2020 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 166.40 MPN/100mL | 23.00 | +623% | Sep 2020 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.22 mg/L | 0.02 | +1,129% | Apr 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 11.00 mg/L | 10.00 | +10% | Dec 2019 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 29.50 MPN/100mL | 23.00 | +28% | Jul 2019 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 488.40 MPN/100mL | 23.00 | +2,023% | May 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.24 mg/L | 3.08 | +5% | Dec 2018 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 24.60 MPN/100mL | 23.00 | +7% | Oct 2018 | Open |
| Coliform, total general | DMR, Limited - Numeric Violation | 23.30 MPN/100mL | 23.00 | +1% | May 2018 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +6% | Apr 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.84 mg/L | 3.08 | +25% | Jan 2018 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +20% | Jan 2017 | 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 WA-793974 · Jun 30, 2025
State CWA Non Penalty AO
Clean Water Act
· Case WA-110346 · Jan 7, 2011
State CWA Non Penalty AO
Clean Water Act
· Case WA-651336 · Jan 7, 2011
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