Psmcsd - Blackie Rd Ws, CA
Exceeded the action level in the past
Latest 90th-percentile lead: 3.6 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.
Psmcsd - Blackie Rd Ws at a glance
Psmcsd - Blackie Rd Ws serves about 60 people through 21 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: CA2702094; phone on file: 831-722-1389. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is up 1.3 ppb from 2.3 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Psmcsd - Blackie Rd Ws is 64 ppb across 11 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3.6 ppb |
| 2025 | 2.3 ppb |
| 2025 | 11.6 ppb over 10 |
| 2024 | 4.2 ppb |
| 2024 | 32.5 ppb over 15 |
| 2023 | 64 ppb over 15 |
| 2022 | 2.9 ppb |
| 2021 | 2.4 ppb |
| 2020 | 7.5 ppb |
| 2019 | 4.1 ppb |
| 2016 | 3 ppb |
Where this result ranks
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. Psmcsd - Blackie Rd Ws's 3.6 ppb sits at the 88th percentile in California and the 85th nationally (higher means more lead).
Other water systems in Monterey County
155 other systems share Monterey County; 29 of them have a higher latest lead result than Psmcsd - Blackie Rd Ws. 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 Royal Oaks, CA
Test your own tap with a certified lab first-draw sample; Royal Oaks, 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 Psmcsd - Blackie Rd Ws whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1385 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Why an old exceedance still matters: over the limit before, under it now.