Schlosser Forge Company
Active WDID 8 36I000436 Rancho Cucamonga, San Bernardino County Region 8 · Santa Ana
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Rancho Cucamonga, San Bernardino County
- Region 8 · Santa Ana · Location · Statewide map
- Receiving water
- Santa Ana 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
- 1 waterbody; 0 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 383 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Apr 01, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 3 inspections · 1 violation record · 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
- 34.09914, -117.54948
- 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
- 11711 Arrow Rte, Rancho Cucamonga 91730
- Regional Water Board
- 8 — Santa Ana
HUC12 watershed Evidence: spatial
- Lower Cucamonga Creek HUC12 180702030705
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
- Schlosser Forge Company
- Primary industry (SIC)
- 3463-Nonferrous Forgings
- Secondary SIC
- 3462-Iron and Steel Forgings
- Application ID
- 213084
- NOI processed
- Mar 13, 1992
- Last certified
- Mar 11, 2021
- Facility size
- 20.6 Acres
- Impervious area
- 99 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 213084 | Industrial | Active | Mar 13, 1992 | — | Mar 11, 2021 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Santa Ana 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
6 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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Day Canyon Creek (Valley Reach) CAR8012100019991013171811 | 752 m | not listed | 0 |
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.
383 distinct measurements across 9 parameters, most recent sample Apr 01, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 45 | 9 | 0 | Oct 14, 2025 | Apr 01, 2026 |
| 2024 | 45 | 9 | 0 | Nov 15, 2024 | Mar 13, 2025 |
| 2023 | 45 | 9 | 0 | Jan 03, 2024 | Apr 15, 2024 |
| 2022 | 36 | 9 | 0 | Dec 08, 2022 | Feb 23, 2023 |
| 2021 | 54 | 9 | 0 | Oct 25, 2021 | Mar 28, 2022 |
| 2020 | 14 | 7 | 0 | Jan 29, 2021 | Feb 12, 2021 |
| 2019 | 21 | 7 | 0 | Nov 27, 2019 | Apr 06, 2020 |
| 2018 | 26 | 7 | 0 | Nov 29, 2018 | Feb 14, 2019 |
| 2017 | 7 | 7 | 0 | Jan 09, 2018 | Jan 09, 2018 |
| 2016 | 62 | 7 | 0 | Oct 24, 2016 | Feb 17, 2017 |
| 2015 | 28 | 7 | 0 | Sep 15, 2015 | Mar 06, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Aluminum, Total | mg/L | 48 | 0 | Sep 15, 2015 | Apr 01, 2026 | Results |
| Iron, Total | mg/L | 48 | 0 | Sep 15, 2015 | Apr 01, 2026 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 48 | 7 | Sep 15, 2015 | Apr 01, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 48 | 1 | Sep 15, 2015 | Apr 01, 2026 | Results |
| Zinc, Total | mg/L | 48 | 0 | Sep 15, 2015 | Apr 01, 2026 | Results |
| Oil and Grease | mg/L | 47 | 10 | Sep 15, 2015 | Apr 01, 2026 | Results |
| pH | SU | 46 | 0 | Sep 15, 2015 | Apr 01, 2026 | Results |
| Chemical Oxygen Demand (COD) | mg/L | 25 | 2 | Oct 25, 2021 | Apr 01, 2026 | Results |
| Nickel, Total | mg/L | 25 | 5 | Oct 25, 2021 | Apr 01, 2026 | Results |
pH results (46 distinct rows, show all)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 01, 2026 | pH | 6.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371955 | |
| Feb 11, 2026 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1367885 | |
| Nov 20, 2025 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1360529 | |
| Nov 14, 2025 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1359399 | |
| Oct 14, 2025 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1354893 | |
| Mar 13, 2025 | pH | 6.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1328276 | |
| Mar 05, 2025 | pH | 6.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1327345 | |
| Feb 13, 2025 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1325790 | |
| Feb 07, 2025 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1323970 | |
| Nov 15, 2024 | pH | 7.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1315871 | |
| Apr 15, 2024 | pH | 6.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1285642 | |
| Feb 19, 2024 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1282663 | |
| Feb 01, 2024 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1279561 | |
| Jan 25, 2024 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1279552 | |
| Jan 03, 2024 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1274541 | |
| Feb 23, 2023 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1228368 | |
| Jan 10, 2023 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1225060 | |
| Dec 28, 2022 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1222185 | |
| Dec 08, 2022 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1216576 | |
| Mar 28, 2022 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1181019 | |
| Mar 04, 2022 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1179295 | |
| Feb 23, 2022 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1179002 | |
| Feb 18, 2022 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1178556 | |
| Dec 14, 2021 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1173843 | |
| Oct 25, 2021 | pH | 8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1169412 | |
| Feb 12, 2021 | pH | 7.6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1144699 | |
| Jan 29, 2021 | pH | 8.6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1144699 | |
| Apr 06, 2020 | pH | 7 | SU | Effluent | Qualifying Storm Event | A4500HB | 1097197 | |
| Dec 04, 2019 | pH | 6.6 | SU | Effluent | Qualifying Storm Event | A4500HB | 1097197 | |
| Nov 27, 2019 | pH | 7.5 | SU | Effluent | Qualifying Storm Event | A4500HB | 1097197 | |
| Feb 14, 2019 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1045423 | |
| Jan 31, 2019 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1045435 | |
| Nov 29, 2018 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | A4500HB | 1030047 | |
| Jan 09, 2018 | pH | 6.6 | SU | Effluent | Qualifying Storm Event | A4500HB | 992428 | |
| Feb 17, 2017 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | A4500HB | 928500 | |
| Feb 07, 2017 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | A4500HB | 929418 | |
| Jan 24, 2017 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | A4500HB | 928403 | |
| Jan 09, 2017 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 917329 | |
| Jan 05, 2017 | pH | 8.2 | SU | Effluent | Qualifying Storm Event | A4500HB | 917239 | |
| Dec 21, 2016 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | A4500HB | 929422 | |
| Dec 16, 2016 | pH | 8 | SU | Effluent | Qualifying Storm Event | A4500HB | 929419 | |
| Nov 21, 2016 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | A4500HB | 928405 | |
| Mar 06, 2016 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 867778 | |
| Jan 05, 2016 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 861551 | |
| Oct 05, 2015 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 856722 | |
| Sep 15, 2015 | pH | 6 | SU | Effluent | Qualifying Storm Event | GRAB | 855419 |
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 | 1 | 1 Violation · 0 Potential (preliminary) · 0 Dismissed | Oct 01, 2019 – Oct 01, 2019 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | May 21, 2020 – May 21, 2020 | Oct 21, 2026 | All actions |
| Inspections | 3 | inspections, not findings | Oct 11, 2011 – Jul 20, 2021 | 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 (16 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 06, 2026 | Annual reports | 1336783 | Annual report 2025 | — | |
| Jul 09, 2025 | Annual reports | 1295663 | Annual report 2024 | — | |
| Jul 09, 2024 | Annual reports | 1244822 | Annual report 2023 | — | |
| Jul 12, 2023 | Annual reports | 1190897 | Annual report 2022 | — | |
| Jul 06, 2022 | Annual reports | 1114408 | Annual report 2021 | — | |
| Jul 20, 2021 | Inspections | 2052304 | B Type compliance | Performed | No Further Action |
| Jul 12, 2021 | Annual reports | 1070495 | Annual report 2020 | — | |
| Jul 08, 2020 | Annual reports | 987887 | Annual report 2019 | — | |
| May 21, 2020 | Enforcement actions | 436784 | SEL (Staff Enforcement Letter) | Active | |
| Oct 01, 2019 | Violations | 873186 | Late Report | Violation | Report |
| Jul 15, 2019 | Annual reports | 955514 | Annual report 2018 | — | |
| Jul 12, 2018 | Annual reports | 940935 | Annual report 2017 | — | |
| Jul 14, 2017 | Annual reports | 880290 | Annual report 2016 | — | |
| Jul 11, 2016 | Annual reports | 843670 | Annual report 2015 | — | |
| Oct 11, 2011 | Inspections | 2013030 | B Type compliance | — | No Further Action |
| Oct 11, 2011 | Inspections | 2013568 | B Type compliance | — | No Further Action |
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.