Clean Water Act discharge permit · NPDES OR0020443
INDEPENDENCE STP, Independence, OR: NPDES OR0020443 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
INDEPENDENCE STP, held by INDEPENDENCE, CITY OF, holds NPDES permit OR0020443, which discharges to Willamette River (Rm 95.5). EPA’s file records it issued June 9, 2016 and expiring April 30, 2021. 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 | INDEPENDENCE STP |
|---|---|
| Permittee as filed | INDEPENDENCE, CITY OF |
| NPDES ID | OR0020443 |
| 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 | June 9, 2016 |
| Expiration date | April 30, 2021 |
| Address | Independence, OR 97351 |
| Receiving water | WILLAMETTE RIVER (RM 95.5) |
| Subwatershed | Ash Creek (HUC 170900070102) |
| 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
- 13Pollutants on file
- 13Under a numeric limit
- 8With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 6 | 48 | 25 | February 28, 2026 | 300% over the limit |
| BOD, 5-day, percent removal | 1 | 17 | 14 | March 31, 2026 | 133% over the limit |
| Solids, suspended percent removal | 1 | 8 | 8 | January 31, 2026 | 72% over the limit |
| Solids, total suspended | 6 | 15 | 5 | May 31, 2021 | 81% over the limit |
| Flow, total | 1 | 3 | 2 | October 31, 2020 | 2,147,483,650% over the limit |
| E. coli | 4 | 7 | 1 | December 31, 2022 | 303% over the limit |
| Nitrogen, ammonia total [as N] | 1 | 1 | 0 | ||
| Mercury, total [as Hg] | 1 | 1 | 0 | ||
| pH | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| Temperature, water deg. centigrade | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Chlorine usage | 1 | 0 | 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
- 15Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 30, 2021 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| November 22, 2020 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| March 11, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 11, 2020 | Management Practice Violations - Failure to Maintain Records | ST6 |
| October 1, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| October 1, 2019 | Effluent Violations - Unauthorized Discharge | ST6 |
| March 1, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| November 1, 2018 | Effluent Violations - Numeric effluent violation | ST6 |
| May 1, 2018 | Effluent Violations - Numeric effluent violation | ST6 |
| April 1, 2018 | Effluent Violations - Numeric effluent violation | ST6 |
| February 1, 2018 | Effluent Violations - Numeric effluent violation | ST6 |
| November 1, 2017 | Effluent Violations - Numeric effluent violation | ST6 |
| October 1, 2017 | Effluent Violations - Unauthorized Discharge | ST6 |
| May 23, 2017 | Effluent Violations - Numeric effluent violation | ST6 |
| March 21, 2017 | Effluent Violations - Numeric effluent violation | 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, OR0020443.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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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 OR0020443 there.
Nearby on the register
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- Every permit record in Oregon, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.