Corning Wastewater Treatment Plant
Active WDID 5R52I019158 Corning, Tehama County Region 5R · Central Valley (Redding)
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Corning, Tehama County
- Region 5R · Central Valley (Redding) · Location · Statewide map
- Receiving water
- Sacramento River (as reported by the facility)
- Evidence: candidate, awaiting review Details
- Identified receiving water on the 2026 303(d) list
- Not established
- Shown only when the reported receiving water is identified and corroborated.
- 2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
- None
- Monitoring results Evidence: facility-reported
- 84 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 11, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 0 violation records · 1 enforcement action
- Counts as published in SMARTS; not a compliance determination · Details
Each label shows where a statement comes from. How to read the labels.
Overview and location
Reported facility location HUC12 watershed Corroborated receiving water 2026 Integrated Report waterbodies nearby
Reported location Evidence: facility-reported
- Coordinates
- 39.914327, -122.12076
- Precision
- 5 decimal places
- Shared point
- 2 permits report this exact point
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 25010 Gardiner Ferry Rd, Corning 96021
- Regional Water Board
- 5R — Central Valley (Redding)
HUC12 watershed Evidence: spatial
- Kopta Slough HUC12 180201570701
The facility's reported location lies within this HUC12 watershed (spatial derivation); it is not a discharge location.
Permits and applications Evidence: SMARTS record
Current permit record
- Permit type
- Industrial
- Application type
- Notice of Intent (WDID code I)
- Status
- Active
- Operator
- Corning City
- Primary industry (SIC)
- 4952-Sewerage Systems
- Application ID
- 197711
- NOI processed
- Dec 02, 2004
- Last certified
- Dec 14, 2018
- Facility size
- 26 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 197711 | Industrial | Active | Dec 02, 2004 | — | Dec 14, 2018 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Sacramento River
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: not confirmed Evidence: candidate, awaiting review Awaiting review
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
Why it is not confirmed (1)
- C1 name is only a prefix of official names
7 official waterbodies share this name; none is assigned without review.
Impaired waters and TMDLs
Two kinds of information, kept apart: 2026 Integrated Report waterbodies near the reported location (geographic proximity only), and TMDL records that SMARTS lists for this facility. Neither establishes where the facility discharges; see Receiving water for the facility's own statement.
Nearby waterbodies Evidence: geographic proximity
Spatial proximity only; discharge pathway not established. Being near a waterbody does not mean the facility discharges to it.
No 2026 Integrated Report waterbody lies within the proximity threshold of the reported location.
SMARTS TMDL records Evidence: SMARTS-reported
No TMDL records for this facility in the SMARTS TMDL export.
Reported monitoring results Evidence: facility-reported
Numeric Action Level (NAL) screening is being independently validated and is not shown. Nothing on this page states whether a result exceeded a NAL.
84 distinct measurements across 3 parameters, most recent sample Feb 11, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 12 | 3 | 0 | Nov 04, 2025 | Feb 11, 2026 |
| 2024 | 9 | 3 | 0 | Nov 20, 2024 | Mar 14, 2025 |
| 2023 | 6 | 3 | 0 | Jan 24, 2024 | Jan 29, 2024 |
| 2022 | 6 | 3 | 0 | Nov 08, 2022 | Dec 29, 2022 |
| 2021 | 9 | 3 | 0 | Oct 22, 2021 | Dec 22, 2021 |
| 2020 | 6 | 3 | 0 | Mar 15, 2021 | Mar 18, 2021 |
| 2019 | 6 | 3 | 0 | Dec 02, 2019 | Jan 29, 2020 |
| 2018 | 9 | 3 | 0 | Nov 29, 2018 | Feb 13, 2019 |
| 2017 | 6 | 3 | 0 | Jan 08, 2018 | Jan 24, 2018 |
| 2016 | 9 | 3 | 0 | Dec 15, 2016 | Mar 24, 2017 |
| 2015 | 6 | 3 | 0 | Oct 25, 2016 | Oct 25, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 28 | 24 | Oct 25, 2016 | Feb 11, 2026 | Results |
| pH | SU | 28 | 0 | Oct 25, 2016 | Feb 11, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 28 | 1 | Oct 25, 2016 | Feb 11, 2026 | Results |
All results (84 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 11, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1369795 | |
| Feb 11, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1369803 | |
| Feb 11, 2026 | pH | 6.97 | SU | Effluent | Qualifying Storm Event | pH_Field | 1369795 | |
| Feb 11, 2026 | pH | 7.34 | SU | Effluent | Qualifying Storm Event | pH_Field | 1369803 | |
| Feb 11, 2026 | Total Suspended Solids (TSS) | 11.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369795 | |
| Feb 11, 2026 | Total Suspended Solids (TSS) | 26.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369803 | |
| Nov 04, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1360466 | |
| Nov 04, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1360470 | |
| Nov 04, 2025 | pH | 7.51 | SU | Effluent | Qualifying Storm Event | pH_Field | 1360466 | |
| Nov 04, 2025 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1360470 | |
| Nov 04, 2025 | Total Suspended Solids (TSS) | 31 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1360466 | |
| Nov 04, 2025 | Total Suspended Solids (TSS) | 27.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1360470 | |
| Mar 14, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1330879 | |
| Mar 14, 2025 | pH | 6.85 | SU | Effluent | Qualifying Storm Event | pH_Field | 1330879 | |
| Mar 14, 2025 | Total Suspended Solids (TSS) | 35.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1330879 | |
| Nov 20, 2024 | Oil and Grease | .8 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1317051 | |
| Nov 20, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1317051 | |
| Nov 20, 2024 | pH | 5.57 | SU | Effluent | Qualifying Storm Event | pH_Field | 1317051 | |
| Nov 20, 2024 | pH | 6.03 | SU | Effluent | Qualifying Storm Event | pH_Field | 1317051 | |
| Nov 20, 2024 | Total Suspended Solids (TSS) | 23.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1317051 | |
| Nov 20, 2024 | Total Suspended Solids (TSS) | 31 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1317051 | |
| Jan 29, 2024 | Oil and Grease | .91 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1270045 | |
| Jan 29, 2024 | pH | 5.81 | SU | Effluent | Qualifying Storm Event | pH_Field | 1270045 | |
| Jan 29, 2024 | Total Suspended Solids (TSS) | 41.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1270045 | |
| Jan 24, 2024 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1275337 | |
| Jan 24, 2024 | pH | 6.74 | SU | Effluent | Qualifying Storm Event | pH_Field | 1275337 | |
| Jan 24, 2024 | Total Suspended Solids (TSS) | 5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1275337 | |
| Dec 29, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1222572 | |
| Dec 29, 2022 | pH | 7.38 | SU | Effluent | Qualifying Storm Event | pH_Field | 1222572 | |
| Dec 29, 2022 | Total Suspended Solids (TSS) | 5.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1222572 | |
| Nov 08, 2022 | Oil and Grease | 3.7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1216055 | |
| Nov 08, 2022 | pH | 8.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1216055 | |
| Nov 08, 2022 | Total Suspended Solids (TSS) | 30 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1216055 | |
| Dec 22, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1176862 | |
| Dec 22, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1176862 | |
| Dec 22, 2021 | pH | 7.49 | SU | Effluent | Qualifying Storm Event | pH_Field | 1176862 | |
| Dec 22, 2021 | pH | 7.35 | SU | Effluent | Qualifying Storm Event | pH_Field | 1176862 | |
| Dec 22, 2021 | Total Suspended Solids (TSS) | 6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1176862 | |
| Dec 22, 2021 | Total Suspended Solids (TSS) | 5.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1176862 | |
| Oct 22, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1168487 | |
| Oct 22, 2021 | pH | 7.48 | SU | Effluent | Qualifying Storm Event | pH_Field | 1168487 | |
| Oct 22, 2021 | Total Suspended Solids (TSS) | 72.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1168487 | |
| Mar 18, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1147687 | |
| Mar 18, 2021 | pH | 7.49 | SU | Effluent | Qualifying Storm Event | pH_Field | 1147687 | |
| Mar 18, 2021 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1147687 | |
| Mar 15, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1147678 | |
| Mar 15, 2021 | pH | 7.38 | SU | Effluent | Qualifying Storm Event | pH_Field | 1147678 | |
| Mar 15, 2021 | Total Suspended Solids (TSS) | 26.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1147678 | |
| Jan 29, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1100498 | |
| Jan 29, 2020 | pH | 7.492 | SU | Effluent | Qualifying Storm Event | pH_Field | 1100498 |
Results are shown exactly as reported by the discharger. Identical rows repeated in the State's export are shown once. Where the export contains different versions of the same sample and parameter, each version is listed and flagged. Details.
Compliance and enforcement records Evidence: SMARTS record
These are records as the State Water Board publishes them in SMARTS, with the source's own types and statuses. They are not a compliance determination or rating. A record listed here is not proof of a violation beyond what the source states, and the absence of records does not establish compliance.
| Record type | Records | As published | Dates | Retrieved | List |
|---|---|---|---|---|---|
| Violations | 0 | 0 Violation · 0 Potential (preliminary) · 0 Dismissed | — | Oct 21, 2026 | |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Nov 08, 2012 – Nov 08, 2012 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Jun 06, 2013 – Aug 04, 2015 | Oct 21, 2026 | All inspections |
| Annual reports | 11 | certified reports (contents not shown) | 2015 – 2025 | Oct 21, 2026 | All reports |
| Water-quality-based corrective action reports | 0 | reports, by parameter | — | Oct 21, 2026 |
Each record type is counted by its own SMARTS identifier. A violation and the enforcement action that cites it are two records in two lists; they are never added together.
Chronological record history (14 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 14, 2026 | Annual reports | 1334559 | Annual report 2025 | — | |
| Aug 04, 2025 | Annual reports | 1293345 | Annual report 2024 | — | |
| Jul 09, 2024 | Annual reports | 1242371 | Annual report 2023 | — | |
| Jun 16, 2023 | Annual reports | 1188329 | Annual report 2022 | — | |
| Jun 20, 2022 | Annual reports | 1111623 | Annual report 2021 | — | |
| Jun 21, 2021 | Annual reports | 1067587 | Annual report 2020 | — | |
| Jun 24, 2020 | Annual reports | 984772 | Annual report 2019 | — | |
| Jun 26, 2019 | Annual reports | 952285 | Annual report 2018 | — | |
| Jul 04, 2018 | Annual reports | 937698 | Annual report 2017 | — | |
| Jun 30, 2017 | Annual reports | 876877 | Annual report 2016 | — | |
| Jul 11, 2016 | Annual reports | 839959 | Annual report 2015 | — | |
| Aug 04, 2015 | Inspections | 2030168 | B Type compliance | — | No Further Action |
| Jun 06, 2013 | Inspections | 2019039 | B Type compliance | — | No Further Action |
| Nov 08, 2012 | Enforcement actions | 410652 | SEL (Staff Enforcement Letter) | Historical |
Sources and provenance
| Information | Source | Retrieved or published |
|---|---|---|
| Permit, location, receiving-water text | SMARTS Industrial Application Specific Data | Oct 20, 2026 |
| Permit history | SMARTS Storm Water Applications | Oct 20, 2026 |
| Monitoring results | SMARTS Industrial Parameter Data | Oct 20, 2026 |
| Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12) | USGS | 2026-10-22 |
| 2026 California Integrated Report, Appendix A: 2026 303(d) List (final) | SWRCB | 2026-10-22 |
| Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0) | SWRCB GIS | 2026-10-22 |
| SMARTS TMDL requirements | SMARTS | 2026-10-21 |
Relationships computed 2026-10-22 with methods facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1; proximity threshold 1.0 km.
How to read the evidence labels
- Evidence: SMARTS record Evidence: facility-reported Information as published in SMARTS or reported by the discharger.
- Evidence: identification corroborated The reported receiving-water name identifies one official waterbody and the facility's location is consistent with it. It does not establish a discharge pathway.
- Evidence: candidate, awaiting review Evidence: not confirmed The reported name could match one or more official waterbodies, but no identification has been confirmed; nothing is assigned without review.
- Evidence: spatial Evidence: geographic proximity Derived from the reported location only.
- Evidence: SMARTS-reported Source records whose links to official references are not yet reviewed.
- Evidence: unavailable The information could not be loaded or is not in the sources.
Records are shown as published and are not compliance determinations. How geographic context is derived.