Non-Compliance
Clean Water Act
PENDLETON WASTEWATER TREATMENT PLANT
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $32,100 in total penalties since records began.
- Address
-
4255 SW 28TH DR
PENDLETON, OR 97801
View on map ↗ - County
- UMATILLA County
- Inspections
- 2 · last Mar 29, 2023
- Total Penalties
- $32,100 · last May 8, 2025
- Registry ID
- 110009817172
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.
6
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 | Management Practice Violations - Best Management Practice Deficiencies | Nov 6, 2024 | Mar 10, 2025 | Resolved |
| cwa | Reporting Violations - Failure to Submit DMRs | Jul 1, 2020 | Nov 25, 2024 | Resolved |
| cwa | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | Aug 1, 2016 | Aug 23, 2022 | Resolved |
| cwa | WW SSO - Discharge to Waters | Dec 27, 2014 | Feb 11, 2015 | Resolved |
| cwa | WW SSO - Overflow to Dry Land or Building Backup | Dec 4, 2013 | Jan 14, 2014 | Resolved |
| cwa | WW SSO - Discharge to Waters | Jul 28, 2010 | Sep 23, 2010 | Resolved |
| cwa | WW SSO - Discharge to Waters | Aug 27, 2004 | Sep 30, 2004 | Resolved |
| cwa | Reporting Violations - Failure to Notify | Aug 20, 2004 | Sep 30, 2004 | 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 |
|---|---|---|---|---|---|---|
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.08 mg/L | 0.05 | +54% | Oct 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 94.16 kg/d | 43.58 | +116% | Sep 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.95 mg/L | 1.00 | +95% | Sep 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 12.70 mg/L | 2.00 | +535% | Sep 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 6.98 mg/L | 5.20 | +34% | Apr 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 17.40 mg/L | 5.20 | +235% | Nov 2023 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.40 mg/L | 3.00 | +47% | Nov 2023 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 126.21 kg/d | 108.96 | +16% | Nov 2023 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.20 mg/L | 2.00 | +10% | Sep 2023 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.08 mg/L | 0.05 | +62% | Jul 2022 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.07 mg/L | 2.00 | +54% | Jul 2022 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.30 mg/L | 1.00 | +30% | Jul 2022 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.31 mg/L | 0.04 | +663% | Apr 2022 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +100% | Apr 2022 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,420.00 MPN/100mL | 406.00 | +496% | Sep 2021 | Open |
| E. coli | DMR, Limited - Overdue | 2,420.00 MPN/100mL | 406.00 | +496% | Sep 2021 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.13 mg/L | 0.05 | +154% | Sep 2021 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.16 mg/L | 0.04 | +305% | Mar 2018 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +100% | Mar 2018 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 1,553.00 MPN/100mL | 406.00 | +283% | Feb 2018 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +100% | Dec 2017 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.29 mg/L | 0.04 | +625% | Dec 2017 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.10 mg/L | 0.05 | +96% | Oct 2017 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.09 mg/L | 0.05 | +80% | Sep 2017 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.06 mg/L | 0.04 | +50% | Apr 2017 | Open |
| E. coli | DMR, Limited - Numeric Violation | 818.00 MPN/100mL | 406.00 | +101% | Feb 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 Penalty AO
Clean Water Act
· Case OR-N00000971
State CWA Penalty AO
Clean Water Act
· Case OR-WQ/M-ER-2024-007 · May 8, 2025
$21,900
State CWA Penalty AO
Clean Water Act
· Case OR-WQ/M-ER-2021-195 · Sep 13, 2022
$10,200
State CWA Penalty AO
Clean Water Act
· Case OR-WQ/M-ER-2018-250 · Apr 19, 2019
$10,200
State CWA Non Penalty AO
Clean Water Act
· Case OR-N00001195 · Aug 14, 1998
Other facilities in UMATILLA County, OR
CHART SUBDIVISION WELL
HERMISTON, OR
CHS HERMISTON FEED MILL
HERMISTON, OR
· Wholesale Trade
DELS FEED AND FARM SUPPLY NO 4629
HERMISTON, OR
· Retail Trade
HALLS TRAILER COURT WELLS
PENDLETON, OR
USDA USFS R06 DESCHUTES & OCHOCO NATIONAL FORESTS
PENDLETON, OR
PENDLETON CITY WATER SYSTEM
PENDLETON, OR