Watsonville City Airport
Active WDID 3 44I003032 Watsonville, Santa Cruz County Region 3 · Central Coast
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Watsonville, Santa Cruz County
- Region 3 · Central Coast · 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
- 2 waterbodies; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 133 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 11, 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
- 36.935722, -121.789638
- Precision
- 6 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
- 100 100b Aviation Way, Watsonville 95076
- Regional Water Board
- 3 — Central Coast
HUC12 watershed Evidence: spatial
- Watsonville Slough Frontal HUC12 180600020804
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
- City of Watsonville
- Primary industry (SIC)
- 4581-Airports, Flying Fields, and Airport Terminal Services
- Application ID
- 186533
- NOI processed
- Apr 02, 1992
- Last certified
- Jul 02, 2026
- Facility size
- 330 Acres
- Impervious area
- 100 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 186533 | Industrial | Active | Apr 02, 1992 | — | Jul 02, 2026 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Watsonville Wetlands
- 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 |
|---|---|---|---|
| West Branch Struve Slough (Santa Cruz County) CAR3051003020191211026828 | 481 m | not listed | 0 |
| Struve Slough CAR3051003020080603125227 | 938 m | listed | 7 |
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.
133 distinct measurements across 4 parameters, most recent sample Feb 11, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 12 | 3 | 0 | Oct 02, 2025 | Feb 11, 2026 |
| 2024 | 12 | 3 | 0 | Nov 25, 2024 | Feb 13, 2025 |
| 2023 | 12 | 3 | 0 | Dec 06, 2023 | Jan 31, 2024 |
| 2022 | 12 | 3 | 0 | Sep 18, 2022 | Feb 23, 2023 |
| 2021 | 12 | 3 | 0 | Dec 12, 2021 | Apr 16, 2022 |
| 2020 | 12 | 3 | 0 | Nov 17, 2020 | Jan 22, 2021 |
| 2019 | 12 | 3 | 0 | Nov 27, 2019 | Mar 07, 2020 |
| 2018 | 15 | 3 | 0 | Nov 21, 2018 | Feb 08, 2019 |
| 2017 | 9 | 3 | 0 | Nov 16, 2017 | Nov 21, 2018 |
| 2016 | 12 | 3 | 0 | Oct 28, 2016 | Feb 02, 2017 |
| 2015 | 13 | 4 | 0 | Nov 03, 2015 | Mar 11, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 44 | 40 | Nov 03, 2015 | Feb 11, 2026 | Results |
| pH | SU | 44 | 0 | Nov 03, 2015 | Feb 11, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 44 | 26 | Nov 03, 2015 | Feb 11, 2026 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 1 | 0 | Mar 11, 2016 | Mar 11, 2016 | Results |
All results (133 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 11, 2026 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1365138 | |
| Feb 11, 2026 | pH | 8.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1365138 | |
| Feb 11, 2026 | Total Suspended Solids (TSS) | < 1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1365138 | |
| Jan 04, 2026 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1365225 | |
| Jan 04, 2026 | pH | 8.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1365225 | |
| Jan 04, 2026 | Total Suspended Solids (TSS) | < 5.9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1365225 | |
| Oct 13, 2025 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1356730 | |
| Oct 13, 2025 | pH | 8.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1356730 | |
| Oct 13, 2025 | Total Suspended Solids (TSS) | < 7.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1356730 | |
| Oct 02, 2025 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1356730 | |
| Oct 02, 2025 | pH | 8.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1356730 | |
| Oct 02, 2025 | Total Suspended Solids (TSS) | < 4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1356730 | |
| Feb 13, 2025 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1332754 | |
| Feb 13, 2025 | pH | 8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1332754 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 3.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1332754 | |
| Feb 04, 2025 | Oil and Grease | < .4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1324690 | |
| Feb 04, 2025 | pH | 8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1324690 | |
| Feb 04, 2025 | Total Suspended Solids (TSS) | < 27.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1324690 | |
| Dec 14, 2024 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1319945 | |
| Dec 14, 2024 | pH | 8.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1319945 | |
| Dec 14, 2024 | Total Suspended Solids (TSS) | < 3.9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319945 | |
| Nov 25, 2024 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1316578 | |
| Nov 25, 2024 | pH | 8.6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1316578 | |
| Nov 25, 2024 | Total Suspended Solids (TSS) | < 8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1316578 | |
| Jan 31, 2024 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1282015 | |
| Jan 31, 2024 | pH | 8.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1282015 | |
| Jan 31, 2024 | Total Suspended Solids (TSS) | < 8.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1282015 | |
| Jan 22, 2024 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1281390 | |
| Jan 22, 2024 | pH | 8.6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1281390 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | < 8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281390 | |
| Dec 17, 2023 | Oil and Grease | < .5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1274082 | |
| Dec 17, 2023 | pH | 8.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1274082 | |
| Dec 17, 2023 | Total Suspended Solids (TSS) | < 7.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1274082 | |
| Dec 06, 2023 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1272067 | |
| Dec 06, 2023 | pH | 8.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1272067 | |
| Dec 06, 2023 | Total Suspended Solids (TSS) | < 2.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1272067 | |
| Feb 23, 2023 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1231022 | |
| Feb 23, 2023 | pH | 8.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1231022 | |
| Feb 23, 2023 | Total Suspended Solids (TSS) | < 1.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1231022 | |
| Feb 03, 2023 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1231006 | |
| Feb 03, 2023 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1231006 | |
| Feb 03, 2023 | Total Suspended Solids (TSS) | < 6.9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1231006 | |
| Nov 08, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1216219 | |
| Nov 08, 2022 | pH | 8.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1216219 | |
| Nov 08, 2022 | Total Suspended Solids (TSS) | < 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1216219 | |
| Sep 18, 2022 | Oil and Grease | < .8 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1214832 | |
| Sep 18, 2022 | pH | 8.8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1214832 | |
| Sep 18, 2022 | Total Suspended Solids (TSS) | < 19 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1214832 | |
| Apr 16, 2022 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1181847 | |
| Apr 16, 2022 | pH | 8.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1181847 |
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 | Mar 22, 2018 – Mar 22, 2018 | 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 10, 2026 | Annual reports | 1336440 | Annual report 2025 | — | |
| Jul 11, 2025 | Annual reports | 1295303 | Annual report 2024 | — | |
| Jul 12, 2024 | Annual reports | 1244438 | Annual report 2023 | — | |
| Jul 10, 2023 | Annual reports | 1190497 | Annual report 2022 | — | |
| Jul 14, 2022 | Annual reports | 1113983 | Annual report 2021 | — | |
| Jun 24, 2021 | Annual reports | 1070053 | Annual report 2020 | — | |
| Jul 09, 2020 | Annual reports | 987411 | Annual report 2019 | — | |
| Jul 11, 2019 | Annual reports | 955021 | Annual report 2018 | — | |
| Jul 13, 2018 | Annual reports | 940439 | Annual report 2017 | — | |
| Mar 22, 2018 | Inspections | 2037499 | B Type compliance | — | No Further Action |
| Jul 03, 2017 | Annual reports | 879767 | Annual report 2016 | — | |
| Jul 14, 2016 | Annual reports | 843733 | 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.