Clean Water Act discharge permit · NPDES OR0020770
HEPPNER STP, Heppner, OR: NPDES OR0020770 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
HEPPNER STP, held by HEPPNER, CITY OF, holds NPDES permit OR0020770, which discharges to Willow Creek. EPA’s file records it issued June 26, 2016 and expiring May 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 | HEPPNER STP |
|---|---|
| Permittee as filed | HEPPNER, CITY OF |
| NPDES ID | OR0020770 |
| 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 26, 2016 |
| Expiration date | May 31, 2021 |
| Address | Heppner, OR 97836 |
| Receiving water | WILLOW CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Sourdough Creek-Willow Creek (HUC 170701040202) |
| 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
- 12Under a numeric limit
- 5With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 4 | 1 | 1 | September 30, 2019 | 47% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 24 | 0 | ||
| Nitrogen, inorganic total | 2 | 5 | 0 | ||
| E. coli | 4 | 4 | 0 | ||
| Alkalinity, total [as CaCO3] | 0 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 11 | 0 | 0 | ||
| Solids, total suspended | 11 | 0 | 0 | ||
| pH | 4 | 0 | 0 | ||
| Temperature, water deg. centigrade | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 1, 2019 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| January 1, 2018 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | 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, OR0020770.
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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 OR0020770 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.