Golden State Water Company - Lake Marie, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 3.3 ppb (monitoring period 2024-2026). 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.
About Golden State Water Company - Lake Marie
Golden State Water Company - Lake Marie serves about 548 people through 207 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Santa Barbara County, California. EPA system ID: CA4210022; phone on file: 916-853-3615. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 3.3 ppb from 0 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Golden State Water Company - Lake Marie is 3.3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3.3 ppb |
| 2023 | 0 (not detected) |
| 2020 | 1.9 ppb |
| 2017 | 0 (not detected) |
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. Golden State Water Company - Lake Marie's 3.3 ppb sits at the 87th percentile in California and the 84th nationally (higher means more lead).
Neighbouring systems
62 other systems share Santa Barbara County; 8 of them have a higher latest lead result than Golden State Water Company - Lake Marie. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Santa Maria Utilities Department | 112,208 | 0 (not detected) |
| City Of Santa Barbara Water Department | 93,334 | 2.5 ppb |
| Goleta Water District | 85,535 | 0 (not detected) |
| Lompoc-City Water Utility Div | 40,538 | 0 (not detected) |
| Golden State Water Company - Orcutt | 34,267 | 2.6 ppb |
| Carpinteria Valley Water District | 16,356 | 0 (not detected) |
| American Water O&M, Llc - Vsfb | 14,971 | 0 (not detected) |
| Montecito Water Dist | 12,010 | 0 (not detected) |
| Guadalupe Water Department | 8,897 | 0 (not detected) |
| Vandenberg Village Comm. Serv. Dist. | 7,308 | 0 (not detected) |
Next steps for Rancho Cordova, CA
Test your own tap with a certified lab first-draw sample; Rancho Cordova, 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 Golden State Water Company - Lake Marie 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. The lead result guide covers how utilities pick the homes they sample. Systems that went over once often dip back under; here is what that means.