Inyokern Csd, CA
Exceeded the action level in the past
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 result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
About Inyokern Csd
Inyokern Csd serves about 1,125 people through 277 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 Kern County, California. EPA system ID: CA1510036; phone on file: 760-677-5597. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Inyokern Csd is 17 ppb across 6 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 5 ppb |
| 2018 | 0 (not detected) |
| 2016 | 0 (not detected) |
| 2016 | 17 ppb over 15 |
How Inyokern 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. Inyokern Csd's reported as 0 (not detected) sits at the 43rd percentile in California and the 27th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
165 other systems share Kern County; 75 of them have a higher latest lead result than Inyokern Csd. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Cws - Bakersfield | 268,129 | 2.8 ppb |
| Bakersfield, City Of | 171,108 | 1.3 ppb |
| Delano, City Of | 51,428 | 0 (not detected) |
| Oildale Mwc | 45,315 | 0 (not detected) |
| Indian Wells Valley W.D. | 41,474 | 0 (not detected) |
| Tejon Castac Wd - I5 & Laval Rd | 38,125 | 0 (not detected) |
| Antelope Valley E Kern Wtr Agy-Rosamond | 37,634 | - |
| Vaughn Wc Inc | 37,189 | 0 (not detected) |
| East Niles Csd | 32,517 | 1.4 ppb |
| Cws - North Garden | 27,634 | 4.2 ppb |
Next steps for Inyokern, CA
Test your own tap with a certified lab first-draw sample; Inyokern, 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 Inyokern 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Why an old exceedance still matters: over the limit before, under it now.