Grass Valley Waste Water Treatment Plant
Active WDID 6B36I026475 Lake Arrowhead, San Bernardino County Region 6B · Lahontan (Victorville)
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Lake Arrowhead, San Bernardino County
- Region 6B · Lahontan (Victorville) · Location · Statewide map
- 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
- 604 distinct results, 12 reporting years (2015 to 2026)
- Most recent sample Sep 06, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 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
- 34.28657, -117.219208
- 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
- 27000 Pilot Rock Rd, Lake Arrowhead 92352
- Regional Water Board
- 6B — Lahontan (Victorville)
HUC12 watershed Evidence: spatial
- Grass Valley Creek-West Fork Mojave River HUC12 180902080202
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
- Lake Arrowhead Community Services District
- Primary industry (SIC)
- 4952-Sewerage Systems
- Application ID
- 470052
- NOI processed
- Mar 03, 2016
- Last certified
- Feb 22, 2022
- Facility size
- 10 Acres
- Impervious area
- 70 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 470052 | Industrial | Active | Mar 03, 2016 | — | Feb 22, 2022 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Grass Valley Creek
- 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 |
|---|---|---|---|
| Grass Valley Lake Creek CAR6282000020171227025977 | 387 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.
604 distinct measurements across 10 parameters, most recent sample Sep 06, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2026 | 18 | 9 | 0 | Sep 06, 2026 | Sep 06, 2026 |
| 2025 | 54 | 9 | 0 | Oct 14, 2025 | Jan 01, 2026 |
| 2024 | 36 | 10 | 0 | Feb 13, 2025 | May 05, 2025 |
| 2023 | 64 | 8 | 0 | Aug 20, 2023 | Mar 02, 2024 |
| 2022 | 64 | 9 | 0 | Oct 12, 2022 | Mar 14, 2023 |
| 2021 | 32 | 9 | 0 | Oct 25, 2021 | Mar 28, 2022 |
| 2020 | 32 | 8 | 0 | Feb 01, 2021 | Mar 13, 2021 |
| 2019 | 48 | 9 | 0 | Nov 20, 2019 | Apr 06, 2020 |
| 2018 | 95 | 9 | 0 | Nov 29, 2018 | May 16, 2019 |
| 2017 | 48 | 8 | 0 | Aug 31, 2017 | Mar 15, 2018 |
| 2016 | 61 | 9 | 0 | Oct 24, 2016 | Feb 27, 2017 |
| 2015 | 52 | 9 | 0 | Oct 04, 2015 | Apr 09, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 77 | 29 | Oct 04, 2015 | Sep 06, 2026 | Results |
| pH | SU | 77 | 0 | Oct 04, 2015 | Sep 06, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 76 | 0 | Oct 04, 2015 | Sep 06, 2026 | Results |
| Chloride | mg/L | 71 | 0 | Mar 06, 2016 | Sep 06, 2026 | Results |
| Fluoride, Total | mg/L | 71 | 20 | Mar 06, 2016 | Sep 06, 2026 | Results |
| Sulfate, Total (as SO4) | mg/L | 71 | 0 | Mar 06, 2016 | Sep 06, 2026 | Results |
| Total Dissolved Solids (TDS) | mg/L | 71 | 0 | Mar 06, 2016 | Sep 06, 2026 | Results |
| Nitrate, Total (as NO3) | mg/L | 46 | 13 | Mar 06, 2016 | Sep 06, 2026 | Results |
| Nitrate, Total (as N) | mg/L | 32 | 12 | Mar 06, 2016 | Feb 13, 2025 | Results |
| Sodium, Total | mg/L | 12 | 0 | Feb 13, 2025 | Sep 06, 2026 | Results |
All results (604 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Sep 06, 2026 | Chloride | 97 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1396946 | |
| Sep 06, 2026 | Chloride | 65 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1396946 | |
| Sep 06, 2026 | Fluoride, Total | .11 | mg/L | Effluent | Qualifying Storm Event | 1396946 | ||
| Sep 06, 2026 | Fluoride, Total | .089 | mg/L | Effluent | Qualifying Storm Event | 1396946 | ||
| Sep 06, 2026 | Nitrate, Total (as NO3) | .34 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1396946 | |
| Sep 06, 2026 | Nitrate, Total (as NO3) | .45 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1396946 | |
| Sep 06, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1396946 | |
| Sep 06, 2026 | Oil and Grease | 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1396946 | |
| Sep 06, 2026 | pH | 7.75 | SU | Effluent | Qualifying Storm Event | A4500HB | 1396946 | |
| Sep 06, 2026 | pH | 7.82 | SU | Effluent | Qualifying Storm Event | A4500HB | 1396946 | |
| Sep 06, 2026 | Sodium, Total | 73 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1396946 | |
| Sep 06, 2026 | Sodium, Total | 53 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1396946 | |
| Sep 06, 2026 | Sulfate, Total (as SO4) | 20 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1396946 | |
| Sep 06, 2026 | Sulfate, Total (as SO4) | 15 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1396946 | |
| Sep 06, 2026 | Total Dissolved Solids (TDS) | 340 | mg/L | Effluent | Qualifying Storm Event | A2540C | 1396946 | |
| Sep 06, 2026 | Total Dissolved Solids (TDS) | 250 | mg/L | Effluent | Qualifying Storm Event | A2540C | 1396946 | |
| Sep 06, 2026 | Total Suspended Solids (TSS) | 66 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1396946 | |
| Sep 06, 2026 | Total Suspended Solids (TSS) | 17 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1396946 | |
| Jan 01, 2026 | Chloride | 31 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1367341 | |
| Jan 01, 2026 | Chloride | 4.5 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1367341 | |
| Jan 01, 2026 | Fluoride, Total | .19 | mg/L | Effluent | Qualifying Storm Event | 1367341 | ||
| Jan 01, 2026 | Fluoride, Total | .058 | mg/L | Effluent | Qualifying Storm Event | 1367341 | ||
| Jan 01, 2026 | Nitrate, Total (as NO3) | .36 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1367341 | |
| Jan 01, 2026 | Nitrate, Total (as NO3) | .36 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1367341 | |
| Jan 01, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1367341 | |
| Jan 01, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1367341 | |
| Jan 01, 2026 | pH | 8.37 | SU | Effluent | Qualifying Storm Event | A4500HB | 1367341 | |
| Jan 01, 2026 | pH | 8.28 | SU | Effluent | Qualifying Storm Event | A4500HB | 1367341 | |
| Jan 01, 2026 | Sodium, Total | 50 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1367341 | |
| Jan 01, 2026 | Sodium, Total | 10 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1367341 | |
| Jan 01, 2026 | Sulfate, Total (as SO4) | 11 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1367341 | |
| Jan 01, 2026 | Sulfate, Total (as SO4) | 3.9 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1367341 | |
| Jan 01, 2026 | Total Dissolved Solids (TDS) | 260 | mg/L | Effluent | Qualifying Storm Event | A2540C | 1367341 | |
| Jan 01, 2026 | Total Dissolved Solids (TDS) | 89 | mg/L | Effluent | Qualifying Storm Event | A2540C | 1367341 | |
| Jan 01, 2026 | Total Suspended Solids (TSS) | 8.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1367341 | |
| Jan 01, 2026 | Total Suspended Solids (TSS) | 2.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1367341 | |
| Nov 15, 2025 | Chloride | 21 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1364746 | |
| Nov 15, 2025 | Fluoride, Total | .042 | mg/L | Effluent | Qualifying Storm Event | 1364746 | ||
| Nov 15, 2025 | Nitrate, Total (as NO3) | .31 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1364746 | |
| Nov 15, 2025 | Oil and Grease | 5.7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1364746 | |
| Nov 15, 2025 | pH | 8.12 | SU | Effluent | Qualifying Storm Event | A4500HB | 1364746 | |
| Nov 15, 2025 | Sodium, Total | 17 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1364746 | |
| Nov 15, 2025 | Sulfate, Total (as SO4) | 5.6 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1364746 | |
| Nov 15, 2025 | Total Dissolved Solids (TDS) | 93 | mg/L | Effluent | Qualifying Storm Event | A2540C | 1364746 | |
| Nov 15, 2025 | Total Suspended Solids (TSS) | 15 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364746 | |
| Nov 11, 2025 | Chloride | 29 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1364746 | |
| Nov 11, 2025 | Fluoride, Total | .05 | mg/L | Effluent | Qualifying Storm Event | 1364746 | ||
| Nov 11, 2025 | Nitrate, Total (as NO3) | .44 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1364746 | |
| Nov 11, 2025 | Oil and Grease | 4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1364746 | |
| Nov 11, 2025 | pH | 7.9 | SU | Effluent | Qualifying Storm Event | A4500HB | 1364746 |
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 | 1 | inspections, not findings | May 13, 2021 – May 13, 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 (12 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 09, 2026 | Annual reports | 1339302 | Annual report 2025 | — | |
| Jul 14, 2025 | Annual reports | 1298347 | Annual report 2024 | — | |
| Jul 15, 2024 | Annual reports | 1247629 | Annual report 2023 | — | |
| Jun 29, 2023 | Annual reports | 1193835 | Annual report 2022 | — | |
| Jul 14, 2022 | Annual reports | 1117714 | Annual report 2021 | — | |
| Jul 14, 2021 | Annual reports | 1065950 | Annual report 2020 | — | |
| May 13, 2021 | Inspections | 2051256 | B Type compliance | Performed | No Further Action |
| Jul 13, 2020 | Annual reports | 959437 | Annual report 2018 | — | |
| Jul 15, 2019 | Annual reports | 983071 | Annual report 2019 | — | |
| Jul 10, 2018 | Annual reports | 944872 | Annual report 2017 | — | |
| Jun 30, 2017 | Annual reports | 884192 | Annual report 2016 | — | |
| Jun 15, 2016 | Annual reports | 865679 | 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.