Ladwp - Control Gorge Power Plant, CA
Exceeded the action level in the past
Latest 90th-percentile lead: 0.6 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.
Who runs the water here
Ladwp - Control Gorge Power Plant serves about 30 people through 12 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Inyo County, California. EPA system ID: CA1400155; phone on file: 800-342-5397. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2024 (0.8 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Ladwp - Control Gorge Power Plant is 39 ppb across 13 monitoring periods, 4 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.6 ppb |
| 2024 | 0.8 ppb |
| 2023 | 0.85 ppb |
| 2022 | 1.1 ppb |
| 2022 | 7.8 ppb |
| 2021 | 20.5 ppb over 15 |
| 2020 | 21.1 ppb over 15 |
| 2019 | 10.5 ppb over 10 |
| 2019 | 8 ppb |
| 2018 | 9.4 ppb |
| 2018 | 21 ppb over 15 |
| 2017 | 6.7 ppb |
| 2017 | 39 ppb over 15 |
Against other California systems
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. Ladwp - Control Gorge Power Plant's 0.6 ppb sits at the 65th percentile in California and the 44th nationally (higher means more lead).
Neighbouring systems
43 other systems share Inyo County; 6 of them have a higher latest lead result than Ladwp - Control Gorge Power Plant. 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) |
| Sierra Highland Csd | 600 | 0 (not detected) |
| Glenwood Mobile Estates | 468 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Los Angeles, 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 Ladwp - Control Gorge Power Plant 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. The lead result guide covers how utilities pick the homes they sample. More in what a past exceedance means today.