Psmcsd - Sunny Mesa, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.3 ppb (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Who runs the water here
Psmcsd - Sunny Mesa serves about 880 people through 268 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Monterey County, California. EPA system ID: CA2700773; phone on file: 831-722-1389. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Psmcsd - Sunny Mesa's lead record
That is up 1.3 ppb from 0 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Psmcsd - Sunny Mesa is 6.4 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.3 ppb |
| 2022 | 0 (not detected) |
| 2019 | 6.4 ppb |
| 2016 | 0 (not detected) |
How Psmcsd - Sunny Mesa compares
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 - Sunny Mesa's 1.3 ppb sits at the 73rd percentile in California and the 60th nationally (higher means more lead).
Neighbouring systems
155 other systems share Monterey County; 64 of them have a higher latest lead result than Psmcsd - Sunny Mesa. 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 - Sunny Mesa whether it covers that cost before hiring anyone - many utilities now do.
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. Size matters more than most people expect: small vs large water systems.