GWS Inc
Active WDID 4 19I025256 South Gate, 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
- South Gate, Los Angeles County
- Region 4 · Los Angeles · Location · Statewide map
- Receiving water
- Los Angeles River Reach Two (as reported by the facility)
- Evidence: not confirmed 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
- 2 waterbodies; 2 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 254 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 16, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 7 violation records · 3 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
- 33.93869, -118.17106
- 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
- 10120 Miller Way, South Gate 90280
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Alhambra Wash-Rio Hondo HUC12 180701050303
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
- Universal Waste Systems Inc
- Primary industry (SIC)
- 2875-Fertilizers, Mixing Only
- Application ID
- 452471
- NOI processed
- Jan 30, 2015
- Last certified
- Jan 09, 2026
- Facility size
- 11.73 Acres
- Impervious area
- 3 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 452471 | Industrial | Active | Jan 30, 2015 | — | Jan 09, 2026 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Los Angeles River Reach Two
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: not confirmed Not matchable to a single waterbody
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
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 |
|---|---|---|---|
| Rio Hondo Reach 1 (Confl. LA River to Snt Ana Fwy) CAR4051501019990202112624 | 104 m | listed | 8 |
| Los Angeles River Reach 2 (Carson to Figueroa Street) CAR4051501019990202085021 | 366 m | listed | 9 |
Waterbodies within 1.0 km of the reported facility location. Method proximity/1.
SMARTS TMDL records Evidence: SMARTS-reported
SMARTS TMDL record as reported for this facility; it is not a determination that the TMDL applies to the facility.
| TMDL | Waterbody (as reported) | Parameter | Limit | Type | Period | Due | Discharges to TMDL water |
|---|---|---|---|---|---|---|---|
| Los Angeles River Metals TMDL | Los Angeles River and Los Angeles River Tributaries | Lead, Total | .094 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| Los Angeles River Metals TMDL | Los Angeles River and Los Angeles River Tributaries | Zinc, Total | .159 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| Los Angeles River Nitrogen TMDL | Los Angeles River Watershed | Nitrate, Total (as N) | 8 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| Los Angeles River Nitrogen TMDL | Los Angeles River Watershed | Nitrite Plus Nitrate (as N) | 8 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| Los Angeles River Nitrogen TMDL | Los Angeles River Watershed | Nitrite, Total (as N) | 1 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
5 records. Links between these records and specific TMDL projects or listed waterbodies have not been reviewed and are not shown.
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.
254 distinct measurements across 10 parameters, most recent sample Feb 16, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 30 | 10 | 0 | Nov 20, 2025 | Feb 16, 2026 |
| 2024 | 10 | 10 | 0 | Feb 13, 2025 | Feb 13, 2025 |
| 2023 | 38 | 10 | 0 | Nov 15, 2023 | Feb 01, 2024 |
| 2022 | 37 | 10 | 0 | Nov 08, 2022 | Mar 14, 2023 |
| 2021 | 30 | 10 | 0 | Oct 25, 2021 | Mar 28, 2022 |
| 2020 | 40 | 10 | 0 | Dec 28, 2020 | Mar 10, 2021 |
| 2019 | 36 | 8 | 0 | Nov 27, 2019 | Apr 06, 2020 |
| 2018 | 6 | 3 | 0 | Dec 06, 2018 | Jan 14, 2019 |
| 2017 | 3 | 3 | 0 | Mar 21, 2018 | Mar 21, 2018 |
| 2016 | 12 | 3 | 0 | Jan 20, 2017 | Feb 17, 2017 |
| 2015 | 12 | 3 | 0 | Mar 07, 2016 | Mar 10, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| pH | SU | 35 | 0 | Mar 07, 2016 | Feb 16, 2026 | Results |
| Oil and Grease | mg/L | 34 | 21 | Mar 07, 2016 | Feb 16, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 34 | 0 | Mar 07, 2016 | Feb 16, 2026 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 24 | 4 | Nov 27, 2019 | Feb 16, 2026 | Results |
| Phosphorus, Total (as P) | mg/L | 24 | 2 | Nov 27, 2019 | Feb 16, 2026 | Results |
| Iron, Total Recoverable | mg/L | 23 | 0 | Nov 27, 2019 | Feb 16, 2026 | Results |
| Lead, Total Recoverable | mg/L | 23 | 8 | Nov 27, 2019 | Feb 16, 2026 | Results |
| Zinc, Total Recoverable | mg/L | 23 | 0 | Nov 27, 2019 | Feb 16, 2026 | Results |
| Nitrate, Total (as N) | mg/L | 17 | 6 | Dec 28, 2020 | Feb 16, 2026 | Results |
| Nitrite, Total (as N) | mg/L | 17 | 10 | Dec 28, 2020 | Feb 16, 2026 | Results |
All results (254 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 16, 2026 | Iron, Total Recoverable | .96 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1369932 | |
| Feb 16, 2026 | Lead, Total Recoverable | .00474 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1369932 | |
| Feb 16, 2026 | Nitrate, Total (as N) | ND .2 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1369932 | |
| Feb 16, 2026 | Nitrite Plus Nitrate (as N) | .11 | mg/L | Effluent | Qualifying Storm Event | A4500NOF | 1369932 | |
| Feb 16, 2026 | Nitrite, Total (as N) | ND .3 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1369932 | |
| Feb 16, 2026 | Oil and Grease | ND 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1369932 | |
| Feb 16, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1369932 | |
| Feb 16, 2026 | Phosphorus, Total (as P) | .83 | mg/L | Effluent | Qualifying Storm Event | A4500PFH | 1369932 | |
| Feb 16, 2026 | Total Suspended Solids (TSS) | 21 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369932 | |
| Feb 16, 2026 | Zinc, Total Recoverable | .072 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1369932 | |
| Dec 24, 2025 | Iron, Total Recoverable | .99 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1365376 | |
| Dec 24, 2025 | Lead, Total Recoverable | .00218 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1365376 | |
| Dec 24, 2025 | Nitrate, Total (as N) | .41 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1365376 | |
| Dec 24, 2025 | Nitrite Plus Nitrate (as N) | .8 | mg/L | Effluent | Qualifying Storm Event | A4500NOF | 1365376 | |
| Dec 24, 2025 | Nitrite, Total (as N) | .41 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1365376 | |
| Dec 24, 2025 | Oil and Grease | 1.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1365376 | |
| Dec 24, 2025 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1365376 | |
| Dec 24, 2025 | Phosphorus, Total (as P) | 3.1 | mg/L | Effluent | Qualifying Storm Event | A4500PFH | 1365376 | |
| Dec 24, 2025 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1365376 | |
| Dec 24, 2025 | Zinc, Total Recoverable | .034 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1365376 | |
| Nov 20, 2025 | Iron, Total Recoverable | .11 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1361868 | |
| Nov 20, 2025 | Lead, Total Recoverable | .00026 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1361868 | |
| Nov 20, 2025 | Nitrate, Total (as N) | ND .04 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1361868 | |
| Nov 20, 2025 | Nitrite Plus Nitrate (as N) | .086 | mg/L | Effluent | Qualifying Storm Event | A4500NOF | 1361868 | |
| Nov 20, 2025 | Nitrite, Total (as N) | ND .07 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1361868 | |
| Nov 20, 2025 | Oil and Grease | 3.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1361868 | |
| Nov 20, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1361868 | |
| Nov 20, 2025 | Phosphorus, Total (as P) | 3.8 | mg/L | Effluent | Qualifying Storm Event | A4500PFH | 1361868 | |
| Nov 20, 2025 | Total Suspended Solids (TSS) | 4.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1361868 | |
| Nov 20, 2025 | Zinc, Total Recoverable | .011 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1361868 | |
| Feb 13, 2025 | Iron, Total Recoverable | .91 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1327281 | |
| Feb 13, 2025 | Lead, Total Recoverable | .0026 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1327281 | |
| Feb 13, 2025 | Nitrate, Total (as N) | ND .04 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1327281 | |
| Feb 13, 2025 | Nitrite Plus Nitrate (as N) | .098 | mg/L | Effluent | Qualifying Storm Event | A4500NOF | 1327281 | |
| Feb 13, 2025 | Nitrite, Total (as N) | ND .07 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1327281 | |
| Feb 13, 2025 | Oil and Grease | 3.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1327281 | |
| Feb 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1327281 | |
| Feb 13, 2025 | Phosphorus, Total (as P) | .41 | mg/L | Effluent | Qualifying Storm Event | A4500PFH | 1327281 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 36 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1327281 | |
| Feb 13, 2025 | Zinc, Total Recoverable | .0613 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1327281 | |
| Feb 01, 2024 | Iron, Total Recoverable | .1 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1282010 | |
| Feb 01, 2024 | Lead, Total Recoverable | .00046 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1282010 | |
| Feb 01, 2024 | Nitrate, Total (as N) | .095 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1282010 | |
| Feb 01, 2024 | Nitrite Plus Nitrate (as N) | .095 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1282010 | |
| Feb 01, 2024 | Nitrite, Total (as N) | ND .05 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1282010 | |
| Feb 01, 2024 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1282010 | |
| Feb 01, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1282010 | |
| Feb 01, 2024 | Phosphorus, Total (as P) | .19 | mg/L | Effluent | Qualifying Storm Event | A4500PFH | 1282010 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 4.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1282010 | |
| Feb 01, 2024 | Zinc, Total Recoverable | .016 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1282010 |
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 | 7 | 7 Violation · 0 Potential (preliminary) · 0 Dismissed | Feb 14, 2022 – Nov 19, 2025 | Oct 21, 2026 | All violations |
| Enforcement actions | 3 | 3 issued · 0 draft · 0 withdrawn, rescinded or superseded | Jun 30, 2022 – May 13, 2026 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Aug 22, 2019 – Nov 19, 2025 | 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 | 2 | reports, by parameter | 2021-22 – 2021-22 | Oct 21, 2026 | All reports |
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 (25 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jun 30, 2026 | Annual reports | 1339168 | Annual report 2025 | — | |
| May 13, 2026 | Enforcement actions | 468333 | NOV (Notice of Violation) | Active | |
| Dec 16, 2025 | Enforcement actions | 468136 | EPL (Expedited Payment Letter) | Active | R4-2025-0073 |
| Nov 19, 2025 | Inspections | 2069982 | B Type compliance | Finalized | Additional Info Required |
| Nov 19, 2025 | Violations | 902804 | Incomplete/Insufficient SWPPP | Violation | Inspection |
| Nov 19, 2025 | Violations | 902807 | Deficient BMP Implementation | Violation | Inspection |
| Jun 27, 2025 | Annual reports | 1298203 | Annual report 2024 | — | |
| Jun 24, 2024 | Annual reports | 1247477 | Annual report 2023 | — | |
| Jun 19, 2023 | Annual reports | 1193678 | Annual report 2022 | — | |
| Feb 18, 2023 | Violations | 902662 | Late Report | Violation | Report |
| Jan 21, 2023 | Violations | 902663 | Late Report | Violation | Report |
| Aug 18, 2022 | Water-quality-based corrective action reports | 1203079 | WQBCAR 2021-22 | — | Zinc, Total |
| Jun 30, 2022 | Enforcement actions | 446770 | ACL (Administrative Civil Liability) | Historical | R4-2022-0195 |
| Jun 30, 2022 | Violations | 881996 | Effluent | Violation | Report |
| Jun 14, 2022 | Annual reports | 1117528 | Annual report 2021 | — | |
| May 19, 2022 | Violations | 902659 | Late Report | Violation | Report |
| Feb 14, 2022 | Violations | 902661 | Late Report | Violation | Report |
| Jan 31, 2022 | Water-quality-based corrective action reports | 1176491 | WQBCAR 2021-22 | — | Zinc, Total |
| Jun 29, 2021 | Annual reports | 1065751 | Annual report 2020 | — | |
| Jul 13, 2020 | Annual reports | 982866 | Annual report 2019 | — | |
| Aug 22, 2019 | Inspections | 2044617 | B Type compliance | — | No Further Action |
| Jun 18, 2019 | Annual reports | 959221 | Annual report 2018 | — | |
| Jun 13, 2018 | Annual reports | 944656 | Annual report 2017 | — | |
| Jul 12, 2017 | Annual reports | 884024 | Annual report 2016 | — | |
| Jul 14, 2016 | Annual reports | 847089 | 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.