Clean Water Act discharge permit · NPDES OR0043991
AURORA STP, Aurora, OR: NPDES OR0043991 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
AURORA STP, held by AURORA, CITY OF, holds NPDES permit OR0043991. EPA’s file records it issued August 22, 2016 and expiring July 31, 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 | AURORA STP |
|---|---|
| Permittee as filed | AURORA, CITY OF |
| NPDES ID | OR0043991 |
| 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 | August 22, 2016 |
| Expiration date | July 31, 2021 |
| Address | Aurora, OR 97002 |
| Subwatershed | Senecal Creek (HUC 170900090501) |
| 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
- 12Pollutants on file
- 12Under a numeric limit
- 7With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 6 | 13 | 5 | March 31, 2026 | 17% over the limit |
| pH | 4 | 2 | 2 | April 30, 2021 | |
| Solids, total suspended | 6 | 8 | 0 | ||
| BOD, 5-day, percent removal | 1 | 3 | 0 | ||
| Solids, suspended percent removal | 1 | 3 | 0 | ||
| Flow, in conduit or thru treatment plant | 3 | 2 | 0 | ||
| Chlorine usage | 1 | 1 | 0 | ||
| E. coli | 4 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Temperature, water deg. centigrade | 1 | 0 | 0 | ||
| Flow, total | 1 | 0 | 0 | ||
| Depth of pond or reservoir in feet | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 14, 2021 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| December 1, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| January 1, 2018 | Effluent Violations - Numeric effluent violation | ST6 |
| January 1, 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, OR0043991.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/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 OR0043991 there.
Nearby on the register
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- Every permit record in Aurora, A to Z
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- Every permit record in Oregon, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.