Testarossa Winery
Active WDID 2 43I014555 Los Gatos, Santa Clara County Region 2 · San Francisco Bay
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Los Gatos, Santa Clara County
- Region 2 · San Francisco Bay · Location · Statewide map
- Receiving water
- Los Gatos Creek (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; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 244 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 17, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 0 inspections · 2 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
- 37.21516, -121.98073
- 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
- 300A College Ave PO box 969, Los Gatos 95030
- Regional Water Board
- 2 — San Francisco Bay
HUC12 watershed Evidence: spatial
- Los Gatos Creek HUC12 180500030303
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
- Testarossa Vineyards
- Primary industry (SIC)
- 2084-Wines, Brandy, and Brandy Spirits
- Application ID
- 184157
- NOI processed
- Sep 03, 1998
- Last certified
- Jun 18, 2015
- Facility size
- 135000 SqFt
- Impervious area
- 70 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 184157 | Industrial | Active | Sep 03, 1998 | — | Jun 18, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Los Gatos Creek
- 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
3 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 |
|---|---|---|---|
| Los Gatos Creek, Lower CAR2054005020171207059470 | 571 m | listed | 3 |
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.
244 distinct measurements across 5 parameters, most recent sample Feb 17, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 16 | 4 | 0 | Dec 31, 2025 | Feb 17, 2026 |
| 2024 | 16 | 4 | 0 | Nov 25, 2024 | Feb 04, 2025 |
| 2023 | 16 | 4 | 0 | Dec 20, 2023 | Mar 06, 2024 |
| 2022 | 32 | 4 | 0 | Nov 08, 2022 | Mar 21, 2023 |
| 2021 | 16 | 4 | 0 | Nov 09, 2021 | Dec 13, 2021 |
| 2020 | 24 | 4 | 0 | Nov 18, 2020 | Jan 28, 2021 |
| 2019 | 24 | 4 | 0 | Dec 02, 2019 | Jan 16, 2020 |
| 2018 | 24 | 4 | 0 | Nov 29, 2018 | Mar 27, 2019 |
| 2017 | 24 | 4 | 0 | Nov 09, 2017 | Mar 22, 2018 |
| 2016 | 34 | 5 | 0 | Oct 28, 2016 | Feb 07, 2017 |
| 2015 | 18 | 3 | 0 | Dec 03, 2015 | Apr 22, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 62 | 16 | Dec 03, 2015 | Feb 17, 2026 | Results |
| pH | SU | 62 | 8 | Dec 03, 2015 | Feb 17, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 62 | 11 | Dec 03, 2015 | Feb 17, 2026 | Results |
| Total Organic Carbon (TOC) | mg/L | 56 | 8 | Oct 28, 2016 | Feb 17, 2026 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 2 | 0 | Oct 28, 2016 | Oct 28, 2016 | Results |
All results (244 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 17, 2026 | Oil and Grease | 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372923 | |
| Feb 17, 2026 | Oil and Grease | 2.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372923 | |
| Feb 17, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1372923 | |
| Feb 17, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1372923 | |
| Feb 17, 2026 | Total Organic Carbon (TOC) | .54 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1372923 | |
| Feb 17, 2026 | Total Organic Carbon (TOC) | 1.3 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1372923 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 2.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372923 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 27.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372923 | |
| Dec 31, 2025 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1364893 | |
| Dec 31, 2025 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1364893 | |
| Dec 31, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1364893 | |
| Dec 31, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1364893 | |
| Dec 31, 2025 | Total Organic Carbon (TOC) | 1.9 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1364893 | |
| Dec 31, 2025 | Total Organic Carbon (TOC) | 8.3 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1364893 | |
| Dec 31, 2025 | Total Suspended Solids (TSS) | 2.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364893 | |
| Dec 31, 2025 | Total Suspended Solids (TSS) | 4.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364893 | |
| Feb 04, 2025 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1332333 | |
| Feb 04, 2025 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1332333 | |
| Feb 04, 2025 | pH | 6.75 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1332333 | |
| Feb 04, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1332333 | |
| Feb 04, 2025 | Total Organic Carbon (TOC) | .54 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1332333 | |
| Feb 04, 2025 | Total Organic Carbon (TOC) | 2.1 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1332333 | |
| Feb 04, 2025 | Total Suspended Solids (TSS) | 2.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1332333 | |
| Feb 04, 2025 | Total Suspended Solids (TSS) | 2.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1332333 | |
| Nov 25, 2024 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1332332 | |
| Nov 25, 2024 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1332332 | |
| Nov 25, 2024 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1332332 | |
| Nov 25, 2024 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1332332 | |
| Nov 25, 2024 | Total Organic Carbon (TOC) | .54 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1332332 | |
| Nov 25, 2024 | Total Organic Carbon (TOC) | 11.1 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1332332 | |
| Nov 25, 2024 | Total Suspended Solids (TSS) | 3.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1332332 | |
| Nov 25, 2024 | Total Suspended Solids (TSS) | 5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1332332 | |
| Mar 06, 2024 | Oil and Grease | 1.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1282444 | |
| Mar 06, 2024 | Oil and Grease | 1.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1282444 | |
| Mar 06, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1282444 | |
| Mar 06, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1282444 | |
| Mar 06, 2024 | Total Organic Carbon (TOC) | .54 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1282444 | |
| Mar 06, 2024 | Total Organic Carbon (TOC) | 3.3 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1282444 | |
| Mar 06, 2024 | Total Suspended Solids (TSS) | 4.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1282444 | |
| Mar 06, 2024 | Total Suspended Solids (TSS) | 13.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1282444 | |
| Dec 20, 2023 | Oil and Grease | 1.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1271026 | |
| Dec 20, 2023 | Oil and Grease | 1.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1271026 | |
| Dec 20, 2023 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1271026 | |
| Dec 20, 2023 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1271026 | |
| Dec 20, 2023 | Total Organic Carbon (TOC) | .54 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1271026 | |
| Dec 20, 2023 | Total Organic Carbon (TOC) | 1.6 | mg/L | Effluent | Qualifying Storm Event | A5310B | 1271026 | |
| Dec 20, 2023 | Total Suspended Solids (TSS) | 2.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1271026 | |
| Dec 20, 2023 | Total Suspended Solids (TSS) | 32.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1271026 | |
| Mar 21, 2023 | Oil and Grease | DNQ 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1235315 | |
| Mar 21, 2023 | Oil and Grease | DNQ 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1235315 |
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 | 2 | 1 Violation · 0 Potential (preliminary) · 1 Dismissed | Jul 02, 1999 – Jul 04, 2005 | Oct 21, 2026 | All violations |
| Enforcement actions | 3 | 2 issued · 1 draft · 0 withdrawn, rescinded or superseded | Nov 08, 1999 – Aug 05, 2005 | Oct 21, 2026 | All actions |
| 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 (16 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jun 27, 2026 | Annual reports | 1333931 | Annual report 2025 | — | |
| Jun 28, 2025 | Annual reports | 1292692 | Annual report 2024 | — | |
| Jun 30, 2024 | Annual reports | 1241681 | Annual report 2023 | — | |
| Jul 13, 2023 | Annual reports | 1187599 | Annual report 2022 | — | |
| Jun 30, 2022 | Annual reports | 1110840 | Annual report 2021 | — | |
| Jul 13, 2021 | Annual reports | 1066761 | Annual report 2020 | — | |
| Jul 09, 2020 | Annual reports | 983900 | Annual report 2019 | — | |
| Jun 30, 2019 | Annual reports | 951392 | Annual report 2018 | — | |
| Jul 15, 2018 | Annual reports | 936798 | Annual report 2017 | — | |
| Jul 06, 2017 | Annual reports | 875928 | Annual report 2016 | — | |
| Jul 14, 2016 | Annual reports | 839779 | Annual report 2015 | — | |
| Aug 05, 2005 | Enforcement actions | 311356 | NNC (Notice of Non-Compliance) | Draft | 97-03DWQ |
| Jul 04, 2005 | Violations | 435493 | Late Report | Dismissed | Report |
| Dec 28, 1999 | Enforcement actions | 226871 | NOV (Notice of Violation) | Active | UNKNOWN |
| Nov 08, 1999 | Enforcement actions | 226612 | NOV (Notice of Violation) | Active | UNKNOWN |
| Jul 02, 1999 | Violations | 138091 | 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.