Valencia Water Reclamation Plant
Active WDID 4 19I007154 Valencia, Los Angeles County Region 4 · Los Angeles
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Valencia, Los Angeles County
- Region 4 · Los Angeles · Location · Statewide map
- Receiving water
- Santa Clara River Reach 5 (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
- 3 waterbodies; 2 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 67 distinct results, 10 reporting years (2015 to 2025)
- Most recent sample Feb 10, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 5 violation records · 2 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
- 34.43076, -118.59079
- 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
- 28185 The Old Road, Valencia 91355
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Salt Canyon-Santa Clara River HUC12 180701020403
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
- Sanitation Districts of Los Angeles County
- Primary industry (SIC)
- 4952-Sewerage Systems
- Application ID
- 189689
- NOI processed
- Jun 04, 1992
- Last certified
- Aug 16, 2019
- Facility size
- 33 Acres
- Impervious area
- 5 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 189689 | Industrial | Active | Jun 04, 1992 | — | Aug 16, 2019 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Santa Clara River Reach 5
- Discharges directly / indirectly
- Y / N (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
1 official waterbody shares 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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Santa Clara River Reach 5 (Blue Cut gaging station to West Pier Hwy 99 Bridge) (was named Santa Clara River Reach 7 on 2002 303(d) list) CAR4035100019990203102901 | 179 m | listed | 13 |
| Unnamed Tributary to Santa Clara River Reach 5 (Los Angeles County) CAR4035100020220915036626 | 265 m | not listed | 0 |
| Santa Clara River Reach 6 (W Pier Hwy 99 to Bouquet Cyn Rd) (was named Santa Clara River Reach 8 on 2002 303(d) list) CAR4035100019990204123459 | 688 m | listed | 4 |
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.
67 distinct measurements across 5 parameters, most recent sample Feb 10, 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 10, 2026 |
| 2024 | 3 | 3 | 0 | Feb 13, 2025 | Feb 13, 2025 |
| 2023 | 15 | 3 | 0 | Dec 20, 2023 | Feb 04, 2024 |
| 2022 | 17 | 3 | 0 | Nov 08, 2022 | Feb 24, 2023 |
| 2021 | 3 | 3 | 0 | Dec 23, 2021 | Dec 23, 2021 |
| 2019 | 3 | 3 | 0 | Nov 27, 2019 | Nov 27, 2019 |
| 2018 | 6 | 3 | 0 | Nov 29, 2018 | Jan 14, 2019 |
| 2017 | 6 | 3 | 0 | Jan 09, 2018 | Mar 02, 2018 |
| 2016 | 3 | 3 | 0 | Jan 22, 2017 | Jan 22, 2017 |
| 2015 | 5 | 5 | 0 | Jan 05, 2016 | Jan 05, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| pH | SU | 22 | 0 | Jan 05, 2016 | Feb 10, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 22 | 0 | Jan 05, 2016 | Feb 10, 2026 | Results |
| Oil and Grease | mg/L | 21 | 21 | Jan 05, 2016 | Feb 10, 2026 | Results |
| E.coli | MPN/100 mL | 1 | 0 | Jan 05, 2016 | Jan 05, 2016 | Results |
| Enterococci MPN | MPN/100 mL | 1 | 0 | Jan 05, 2016 | Jan 05, 2016 | Results |
All results (67 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 10, 2026 | Oil and Grease | < 9.2 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1371130 | |
| Feb 10, 2026 | pH | 7.43 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371130 | |
| Feb 10, 2026 | Total Suspended Solids (TSS) | 35.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371130 | |
| Oct 14, 2025 | Oil and Grease | DNQ 3.8 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1358644 | |
| Oct 14, 2025 | pH | 6.98 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358644 | |
| Oct 14, 2025 | Total Suspended Solids (TSS) | 27.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358644 | |
| Feb 13, 2025 | Oil and Grease | < 6.9 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1327663 | |
| Feb 13, 2025 | pH | 8.33 | SU | Effluent | Qualifying Storm Event | pH_Field | 1327663 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 65.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1327663 | |
| Feb 04, 2024 | Oil and Grease | < 6.4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1282026 | |
| Feb 04, 2024 | pH | 8.02 | SU | Effluent | Qualifying Storm Event | pH_Field | 1282026 | |
| Feb 04, 2024 | Total Suspended Solids (TSS) | 17.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1282026 | |
| Feb 01, 2024 | Oil and Grease | < 6 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1281848 | |
| Feb 01, 2024 | pH | 8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1281848 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 42 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281848 | |
| Jan 22, 2024 | Oil and Grease | DNQ 4.2 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1281101 | |
| Jan 22, 2024 | pH | 8.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1281101 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | 16.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281101 | |
| Dec 30, 2023 | Oil and Grease | < 6.1 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1270028 | |
| Dec 30, 2023 | pH | 7.88 | SU | Effluent | Qualifying Storm Event | pH_Field | 1270028 | |
| Dec 30, 2023 | Total Suspended Solids (TSS) | 30.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1270028 | |
| Dec 20, 2023 | Oil and Grease | DNQ 4.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1276969 | |
| Dec 20, 2023 | pH | 8.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1276969 | |
| Dec 20, 2023 | Total Suspended Solids (TSS) | 102 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1276969 | |
| Feb 24, 2023 | Oil and Grease | < 5.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1227810 | |
| Feb 24, 2023 | pH | 8.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1227810 | |
| Feb 24, 2023 | Total Suspended Solids (TSS) | 115 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1227810 | |
| Jan 14, 2023 | Oil and Grease | < 6.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1225947 | |
| Jan 14, 2023 | pH | 9.04 | SU | Effluent | Qualifying Storm Event | pH_Field | 1225947 | |
| Jan 14, 2023 | Total Suspended Solids (TSS) | 112 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1225947 | |
| Jan 09, 2023 | Oil and Grease | < 5.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1225942 | |
| Jan 09, 2023 | pH | 8.06 | SU | Effluent | Qualifying Storm Event | pH_Field | 1225942 | |
| Jan 09, 2023 | Total Suspended Solids (TSS) | 324 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1225942 | |
| Jan 05, 2023 | Oil and Grease | < 6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1225904 | |
| Jan 05, 2023 | pH | 8.75 | SU | Effluent | Qualifying Storm Event | pH_Field | 1225904 | |
| Jan 05, 2023 | Total Suspended Solids (TSS) | 152 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1225904 | |
| Dec 11, 2022 | pH | 7.66 | SU | Effluent | Qualifying Storm Event | pH_Field | 1222683 | |
| Dec 11, 2022 | Total Suspended Solids (TSS) | 159 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1222683 | |
| Nov 08, 2022 | Oil and Grease | DNQ 3.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1218465 | |
| Nov 08, 2022 | pH | 8.28 | SU | Effluent | Qualifying Storm Event | pH_Field | 1218465 | |
| Nov 08, 2022 | Total Suspended Solids (TSS) | 399 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1218465 | |
| Dec 23, 2021 | Oil and Grease | < 6.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1177178 | |
| Dec 23, 2021 | pH | 7.06 | SU | Effluent | Qualifying Storm Event | pH_Field | 1177178 | |
| Dec 23, 2021 | Total Suspended Solids (TSS) | 49.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1177178 | |
| Nov 27, 2019 | Oil and Grease | < 4.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1098518 | |
| Nov 27, 2019 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1098518 | |
| Nov 27, 2019 | Total Suspended Solids (TSS) | 117 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1098518 | |
| Jan 14, 2019 | Oil and Grease | < 5.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1045153 | |
| Jan 14, 2019 | pH | 7.67 | SU | Effluent | Qualifying Storm Event | pH_Field | 1045153 | |
| Jan 14, 2019 | Total Suspended Solids (TSS) | 76 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1045153 |
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 | 5 | 4 Violation · 1 Potential (preliminary) · 0 Dismissed | Jul 02, 1999 – Jul 10, 2024 | Oct 21, 2026 | All violations |
| Enforcement actions | 2 | 2 issued · 0 draft · 0 withdrawn, rescinded or superseded | May 31, 2002 – Feb 15, 2023 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | May 31, 2002 – Jun 25, 2002 | 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 (20 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 13, 2026 | Annual reports | 1335463 | Annual report 2025 | — | |
| Jul 14, 2025 | Annual reports | 1294283 | Annual report 2024 | — | |
| Jul 10, 2024 | Annual reports | 1243370 | Annual report 2023 | — | |
| Jul 10, 2024 | Violations | 889346 | Enforcement Action | Potential | Internal Report |
| Jul 12, 2023 | Annual reports | 1189374 | Annual report 2022 | — | |
| Feb 15, 2023 | Enforcement actions | 449503 | NOV (Notice of Violation) | Active | |
| Feb 15, 2023 | Violations | 884570 | Incomplete/Insufficient SWPPP | Violation | Report |
| Jul 13, 2022 | Annual reports | 1112757 | Annual report 2021 | — | |
| Jul 12, 2021 | Annual reports | 1068770 | Annual report 2020 | — | |
| Jul 10, 2020 | Annual reports | 986038 | Annual report 2019 | — | |
| Jul 01, 2019 | Annual reports | 953598 | Annual report 2018 | — | |
| Jul 10, 2018 | Annual reports | 939014 | Annual report 2017 | — | |
| Jul 13, 2017 | Annual reports | 878258 | Annual report 2016 | — | |
| Jul 15, 2016 | Annual reports | 842753 | Annual report 2015 | — | |
| Jun 25, 2002 | Inspections | 1732851 | Enforcement Follow-up | — | |
| May 31, 2002 | Enforcement actions | 247367 | NTC (Notice to Comply) | Historical | Field NTC |
| May 31, 2002 | Inspections | 1732850 | B Type compliance | — | Additional Info Required |
| May 31, 2002 | Violations | 218849 | Deficient BMP Implementation | Violation | Inspection |
| May 31, 2002 | Violations | 218850 | Deficient BMP Implementation | Violation | Inspection |
| Jul 02, 1999 | Violations | 155088 | Deficient Report | Violation | Inspection |
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.