Cal Am - Isleton, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 2 ppb (monitoring period 2022-2024). 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
Cal Am - Isleton serves about 1,693 people through 513 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Sacramento County, California. EPA system ID: CA3410012; phone on file: 916-568-4259. 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 2 ppb from 0 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Cal Am - Isleton is 2 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2 ppb |
| 2021 | 0 (not detected) |
| 2020 | 1 ppb |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
| 2016 | 1 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. Cal Am - Isleton's 2 ppb sits at the 79th percentile in California and the 72nd nationally (higher means more lead).
Neighbouring systems
61 other systems share Sacramento County; 10 of them have a higher latest lead result than Cal Am - Isleton. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Sacramento Main | 527,979 | 0 (not detected) |
| Sacramento Suburban Water District | 194,444 | 0 (not detected) |
| Scwa - Laguna/Vineyard | 188,417 | 0 (not detected) |
| Folsom, City Of - Main | 80,969 | 0 (not detected) |
| Citrus Heights Water District | 67,818 | 0 (not detected) |
| Cal Am - Suburban Rosemont | 54,893 | 0 (not detected) |
| Cal Am - Parkway | 50,646 | 1 ppb |
| Cal Am - Lincoln Oaks | 48,105 | 1 ppb |
| Golden State Water Co. - Cordova | 47,366 | 0 (not detected) |
| Elk Grove Water District | 44,065 | 0 (not detected) |
Next steps for Sacramento, CA
Test your own tap with a certified lab first-draw sample; Sacramento, 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 Cal Am - Isleton 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Size matters more than most people expect: small vs large water systems.