Sierra Highland Csd, CA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
About Sierra Highland Csd
Sierra Highland Csd serves about 600 people through 215 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 Inyo County, California. EPA system ID: CA1400007; phone on file: 760-873-4302. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Sierra Highland Csd's lead record
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Sierra Highland Csd is 0 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2016 | 0 (not detected) |
How Sierra Highland Csd 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. Sierra Highland Csd's reported as 0 (not detected) sits at the 38th percentile in California and the 23rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
43 other systems share Inyo County; 7 of them have a higher latest lead result than Sierra Highland Csd. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Bishop, City Of | 3,819 | 0 (not detected) |
| Inyo County Pwd - Lone Pine | 1,835 | 0 (not detected) |
| Highland Mobile Home Park | 1,260 | 0 (not detected) |
| Inyo County Pwd - Independence | 1,108 | 0 (not detected) |
| Indian Creek Csd | 1,030 | 0 (not detected) |
| Rolling Green Utilities, Inc. | 940 | 0 (not detected) |
| Big Pine Csd | 798 | 0 (not detected) |
| Meadowcreek Mutual Water Company | 764 | 0 (not detected) |
| Glenwood Mobile Estates | 468 | 0 (not detected) |
| Owens Valley Water Resources, Inc. | 311 | 0 (not detected) |
Your move
Look up your address in Sierra Highland Csd'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 Sierra Highland Csd 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.