DENSO Murrieta Operations
Active WDID 9 33I025770 Murrieta, Riverside County Region 9 · San Diego
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Murrieta, Riverside County
- Region 9 · San Diego · Location · Statewide map
- Receiving water
- Murrieta Creek (as reported by the facility)
- Evidence: identification corroborated Murrieta Creek Details
- Identified receiving water on the 2026 303(d) list
- Yes · 15 Appendix A decisions, category 5 Evidence: State-published
- Describes the waterbody, not this facility · Waterbody profile
- 2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
- 2 waterbodies; 2 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 102 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 11, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 0 inspections · 0 violation records · 0 enforcement actions
- 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
- 33.53113, -117.18251
- Precision
- 5 decimal places
- Shared point
- No
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 41673 Corning Place, Murrieta 92562
- Regional Water Board
- 9 — San Diego
HUC12 watershed Evidence: spatial
- Cole Canyon-Murrieta Creek HUC12 180703020402
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
- DENSO Murrieta Operations
- Primary industry (SIC)
- 3694-Electrical Equipment for Internal Combustion Engines
- Application ID
- 457848
- NOI processed
- Jul 02, 2015
- Last certified
- Mar 06, 2026
- Facility size
- 6.5 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 457848 | Industrial | Active | Jul 02, 2015 | — | Mar 06, 2026 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Murrieta Creek
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: identification corroborated Murrieta Creek CAR9023200020010924152136
Receiving water reported by facility — waterbody identification corroborated by geographic evidence.
Nearest distance from the reported facility location: 429 m. Method receiving_water/2.
2026 Integrated Report status Evidence: State-published
Murrieta Creek is on the 2026 Clean Water Act section 303(d) list (15 Appendix A decisions; category 5).
| Pollutant | Category | Listing decision | TMDL requirement | Decision ID |
|---|---|---|---|---|
| Benthic Community Effects | 5 | List on 303(d) list (TMDL required list) | 5A | 126449 |
| Bifenthrin | 5 | List on 303(d) list (TMDL required list) | 5A | 111391 |
| Chlorpyrifos | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 111360 |
| Copper | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 111361 |
| Cyhalothrin, Lambda | 5 | List on 303(d) list (TMDL required list) | 5A | 111402 |
| Indicator Bacteria | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 127907 |
| Iron | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 111368 |
| Manganese | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 111372 |
| Mercury | 5 | List on 303(d) list (TMDL required list) | 5A | 128174 |
| Nitrogen | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 132050 |
| Oxygen, Dissolved | 5 | List on 303(d) list (TMDL required list) | 5A | 111375 |
| Phosphorus | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 111378 |
| Pyrethroids | 5 | List on 303(d) list (TMDL required list) | 5A | 111389 |
| Toxicity | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 111385 |
| Turbidity | 5 | List on 303(d) list (TMDL required list) | 5A | 111386 |
Published by the State Water Resources Control Board (2026 California Integrated Report, Appendix A). Listing status is taken from Appendix A only. State Board adoption 2026-02-03; USEPA approval not confirmed. A listing describes the waterbody, not this facility. Waterbody profile.
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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Warm Springs Creek (Riverside County) CAR9023300020080825005933 | 158 m | listed | 6 |
| Murrieta Creek CAR9023200020010924152136 | 429 m | listed | 15 |
Waterbodies within 1.0 km of the reported facility location. Method proximity/1.
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.
102 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 | 6 | 3 | 0 | Oct 14, 2025 | Feb 11, 2026 |
| 2024 | 6 | 3 | 0 | Feb 12, 2025 | Mar 05, 2025 |
| 2023 | 9 | 3 | 0 | Nov 15, 2023 | Feb 05, 2024 |
| 2022 | 12 | 3 | 0 | Sep 09, 2022 | Feb 23, 2023 |
| 2021 | 9 | 3 | 0 | Aug 31, 2021 | Mar 28, 2022 |
| 2020 | 6 | 3 | 0 | Mar 03, 2021 | Mar 10, 2021 |
| 2019 | 15 | 3 | 0 | Nov 27, 2019 | Jun 29, 2020 |
| 2018 | 9 | 3 | 0 | Dec 05, 2018 | May 16, 2019 |
| 2017 | 12 | 3 | 0 | Aug 01, 2017 | Mar 22, 2018 |
| 2016 | 9 | 3 | 0 | Sep 16, 2016 | Jan 09, 2017 |
| 2015 | 9 | 3 | 0 | Sep 15, 2015 | Mar 11, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 34 | 15 | Sep 15, 2015 | Feb 11, 2026 | Results |
| pH | SU | 34 | 2 | Sep 15, 2015 | Feb 11, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 34 | 0 | Sep 15, 2015 | Feb 11, 2026 | Results |
All results (102 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 | 1367998 | |
| Feb 11, 2026 | pH | 7.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1367998 | |
| Feb 11, 2026 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1367998 | |
| Oct 14, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1354872 | |
| Oct 14, 2025 | pH | 7.7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1354872 | |
| Oct 14, 2025 | Total Suspended Solids (TSS) | 24 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1354872 | |
| Mar 05, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1326548 | |
| Mar 05, 2025 | pH | 8.3 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1326548 | |
| Mar 05, 2025 | Total Suspended Solids (TSS) | 20 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1326548 | |
| Feb 12, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1325033 | |
| Feb 12, 2025 | pH | 8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1325033 | |
| Feb 12, 2025 | Total Suspended Solids (TSS) | 29 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325033 | |
| Feb 05, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1279143 | |
| Feb 05, 2024 | pH | 7.7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1279143 | |
| Feb 05, 2024 | Total Suspended Solids (TSS) | 4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1279143 | |
| Jan 03, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1274213 | |
| Jan 03, 2024 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1274213 | |
| Jan 03, 2024 | Total Suspended Solids (TSS) | 7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1274213 | |
| Nov 15, 2023 | Oil and Grease | 3.9 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1268383 | |
| Nov 15, 2023 | pH | 8.13 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1268383 | |
| Nov 15, 2023 | Total Suspended Solids (TSS) | 150 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1268383 | |
| Feb 23, 2023 | Oil and Grease | 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1228266 | |
| Feb 23, 2023 | pH | 7.44 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1228266 | |
| Feb 23, 2023 | Total Suspended Solids (TSS) | 32 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1228266 | |
| Jan 10, 2023 | Oil and Grease | 5.5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1224424 | |
| Jan 10, 2023 | pH | 9.07 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1224424 | |
| Jan 10, 2023 | Total Suspended Solids (TSS) | 20 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1224424 | |
| Nov 02, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1215687 | |
| Nov 02, 2022 | pH | 8.6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1215687 | |
| Nov 02, 2022 | Total Suspended Solids (TSS) | 60 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1215687 | |
| Sep 09, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1214711 | |
| Sep 09, 2022 | pH | 8.15 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1214711 | |
| Sep 09, 2022 | Total Suspended Solids (TSS) | 39 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1214711 | |
| Mar 28, 2022 | Oil and Grease | 5.4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1180946 | |
| Mar 28, 2022 | pH | 8.3 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1180946 | |
| Mar 28, 2022 | Total Suspended Solids (TSS) | 12 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1180946 | |
| Oct 08, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1178560 | |
| Oct 08, 2021 | pH | 7.9 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1178560 | |
| Oct 08, 2021 | Total Suspended Solids (TSS) | 2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1178560 | |
| Aug 31, 2021 | Oil and Grease | 7.2 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1167190 | |
| Aug 31, 2021 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1167190 | |
| Aug 31, 2021 | Total Suspended Solids (TSS) | 64 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1167190 | |
| Mar 10, 2021 | Oil and Grease | 5.9 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1146946 | |
| Mar 10, 2021 | pH | 7.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1146946 | |
| Mar 10, 2021 | Total Suspended Solids (TSS) | 8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1146946 | |
| Mar 03, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1150687 | |
| Mar 03, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1150687 | |
| Mar 03, 2021 | Total Suspended Solids (TSS) | 7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1150687 | |
| Jun 29, 2020 | Oil and Grease | 13 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1122353 | |
| Jun 29, 2020 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1122353 |
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 | 0 | 0 issued · 0 draft · 0 withdrawn, rescinded or superseded | — | Oct 21, 2026 | |
| Inspections | 0 | inspections, not findings | — | Oct 21, 2026 | |
| 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 (11 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 01, 2026 | Annual reports | 1338680 | Annual report 2025 | — | |
| Jun 19, 2025 | Annual reports | 1297691 | Annual report 2024 | — | |
| Jun 25, 2024 | Annual reports | 1246942 | Annual report 2023 | — | |
| Jun 20, 2023 | Annual reports | 1193116 | Annual report 2022 | — | |
| Jun 21, 2022 | Annual reports | 1116898 | Annual report 2021 | — | |
| Jun 24, 2021 | Annual reports | 1065091 | Annual report 2020 | — | |
| Jul 15, 2020 | Annual reports | 982156 | Annual report 2019 | — | |
| Jul 11, 2019 | Annual reports | 958490 | Annual report 2018 | — | |
| Jul 12, 2018 | Annual reports | 943931 | Annual report 2017 | — | |
| Jan 12, 2018 | Annual reports | 883439 | Annual report 2016 | — | |
| Jun 24, 2016 | Annual reports | 848284 | Annual report 2015 | — |
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.