Woodside Wa, CA
Exceeded the action level in the past
Latest 90th-percentile lead: 2.4 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Woodside Wa at a glance
Woodside Wa serves about 45 people through 26 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Monterey County, California. EPA system ID: CA2702140; phone on file: 410-703-6972. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Woodside Wa's lead record
That is down 1.9 ppb from 4.3 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Woodside Wa is 21.3 ppb across 8 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.4 ppb |
| 2025 | 4.3 ppb |
| 2025 | 3.2 ppb |
| 2024 | 0 (not detected) |
| 2024 | 3.4 ppb |
| 2023 | 21.3 ppb over 15 |
| 2020 | 0 (not detected) |
| 2018 | 0 (not detected) |
Against other California systems
Of the 2,884 California systems with a lead result, the median latest reading is 0 ppb; 30 are over 15 ppb right now and 215 have gone over at some point. Woodside Wa's 2.4 ppb sits at the 81st percentile in California and the 76th nationally (higher means more lead).
Nearby utilities
155 other systems share Monterey County; 46 of them have a higher latest lead result than Woodside Wa. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Cal Am Water Company - Monterey | 128,928 | 1 ppb |
| Cwsc Salinas | 114,286 | 1.2 ppb |
| Alco Water Service | 56,253 | 0 (not detected) |
| Marina Coast Water District | 38,918 | 0 (not detected) |
| Soledad, City Of | 19,732 | 0 (not detected) |
| Greenfield, City Of | 18,967 | 0 (not detected) |
| Cwsc King City | 14,046 | 0 (not detected) |
| Gonzales, City Of | 8,333 | 0 (not detected) |
| Cwsc Salinas Hills | 7,733 | 0.9 ppb |
| Castroville Community Services District | 7,515 | 0 (not detected) |
Next steps for Carmel Valley, CA
Test your own tap with a certified lab first-draw sample; Carmel Valley, CA may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Woodside Wa whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 5230 ppb (copper action level 1,300 ppb).
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. The lead result guide covers how utilities pick the homes they sample. More in what a past exceedance means today.