Clean Water Act discharge permit · NPDES OR0029939
UNION STP, Union, OR: NPDES OR0029939 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
UNION STP, held by UNION, CITY OF, holds NPDES permit OR0029939, which discharges to Catherine Creek. EPA’s file records it issued November 24, 2004 and expiring October 31, 2009. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | UNION STP |
|---|---|
| Permittee as filed | UNION, CITY OF |
| NPDES ID | OR0029939 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | November 24, 2004 |
| Expiration date | October 31, 2009 |
| Address | Union, OR 97883 |
| Receiving water | CATHERINE CREEK |
| Subwatershed | Pyles Creek (HUC 170601040505) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 20Pollutants on file
- 12Under a numeric limit
- 20With a violation of any kind
- 2With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Chlorine, total residual | 2 | 4 | 2 | October 31, 2024 | 571% over the limit |
| Solids, total suspended | 6 | 52 | 1 | April 30, 2023 | 8% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 48 | 0 | ||
| Temperature, water deg. centigrade | 3 | 19 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 17 | 0 | ||
| E. coli | 4 | 10 | 0 | ||
| pH | 4 | 9 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 6 | 0 | ||
| BOD, 5-day, percent removal | 1 | 5 | 0 | ||
| Flow rate | 1 | 3 | 0 | ||
| Chlorine usage | 1 | 3 | 0 | ||
| Alkalinity, total [as CaCO3] | 0 | 3 | 0 | ||
| Solids, suspended percent removal | 1 | 2 | 0 | ||
| Flow, total | 1 | 1 | 0 | ||
| Oxygen, dissolved [DO] | 0 | 1 | 0 | ||
| Oil & Grease | 0 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 1 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 1 | 0 | ||
| Phosphorus, total [as P] | 0 | 1 | 0 | ||
| Solids, total dissolved | 0 | 1 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 11Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 15, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 1, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| December 1, 2024 | Reporting Violations - Failure to Notify | ST6 |
| September 6, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| April 7, 2022 | Management Practice Violations - Best Management Practice Deficiencies | ST6 |
| July 1, 2020 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| April 2, 2020 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| December 1, 2019 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| February 19, 2019 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| February 1, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| February 19, 2018 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, OR0029939.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID OR0029939 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.