City Of Livermore, CA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
City Of Livermore serves about 38,892 people through 9,958 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Alameda County, California. EPA system ID: CA0110011; phone on file: 925-960-8138. They can tell you what your service line is made of and whether they pay to replace it.
City Of Livermore's lead record
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for City Of Livermore is 0 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
How City Of Livermore 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. City Of Livermore's reported as 0 (not detected) sits at the 58th percentile in California and the 39th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Alameda County
13 other systems share Alameda County; 3 of them have a higher latest lead result than City Of Livermore. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| East Bay Mud | 1,468,000 | 0 (not detected) |
| Alameda County Water District | 344,000 | 0 (not detected) |
| City Of Hayward | 162,954 | 0 (not detected) |
| Dublin San Ramon Services District | 98,776 | 0 (not detected) |
| City Of Pleasanton | 76,689 | 0 (not detected) |
| California Water Service - Livermore | 60,414 | 7.5 ppb |
| Alameda Point | 600 | 0 (not detected) |
| Castlewood Domestic Water System | 524 | 0 (not detected) |
| Trailer Haven Mobile Home Park | 459 | 2.7 ppb |
| Town Of Sunol - Sfpuc | 281 | 0 (not detected) |
Next steps for Livermore, CA
Look up your address in City Of Livermore's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask City Of Livermore 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. Small systems behave differently: why small systems go over more often.