Cci - Tehachapi, CA
Exceeded the action level in the past
Latest 90th-percentile lead: 1.6 ppb (monitoring period 2025-2025). 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.
Cci - Tehachapi at a glance
Cci - Tehachapi serves about 2,993 people through 1,806 service connections, which makes it a small system under EPA's size classes. It is owned by the state and draws groundwater, in Kern County, California. EPA system ID: CA1510800; phone on file: 661-822-4402. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2024 (1.7 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Cci - Tehachapi is 40 ppb across 15 monitoring periods, 3 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.6 ppb |
| 2024 | 1.7 ppb |
| 2023 | 5 ppb |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2020 | 7 ppb |
| 2019 | 0 (not detected) |
| 2019 | 6 ppb |
| 2018 | 0 (not detected) |
| 2018 | 23 ppb over 15 |
| 2017 | 7.5 ppb |
| 2017 | 18 ppb over 15 |
| 2016 | 40 ppb over 15 |
How Cci - Tehachapi 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. Cci - Tehachapi's 1.6 ppb sits at the 76th percentile in California and the 65th nationally (higher means more lead).
Other water systems in Kern County
165 other systems share Kern County; 39 of them have a higher latest lead result than Cci - Tehachapi. 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 |
What to do in your house
Test your own tap with a certified lab first-draw sample; Tehachapi, 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 Cci - Tehachapi 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. More in what a past exceedance means today.