Walnut Cove Mobile Estates, 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.
About Walnut Cove Mobile Estates
Walnut Cove Mobile Estates serves about 200 people through 60 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Lake County, California. EPA system ID: CA1700674; phone on file: 707-694-1170. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2019 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Walnut Cove Mobile Estates is 0 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
How Walnut Cove Mobile Estates 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. Walnut Cove Mobile Estates's reported as 0 (not detected) sits at the 27th percentile in California and the 15th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Lake County
41 other systems share Lake County; 10 of them have a higher latest lead result than Walnut Cove Mobile Estates. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Highlands Mutual Water Company | 7,772 | 0 (not detected) |
| Hidden Valley Lake Csd | 6,235 | 0 (not detected) |
| Konocti County Water District | 5,928 | 0 (not detected) |
| Lakeport, City Of | 4,762 | 0 (not detected) |
| Golden State Water Co.-Clearlake System | 4,623 | 4.1 ppb |
| Mt. Konocti Mutual Water Company | 4,360 | 0 (not detected) |
| Kelseyville Co Waterworks District 3 | 4,102 | 5.2 ppb |
| Lake County Csa 21 - North Lakeport | 4,046 | 0 (not detected) |
| Cobb Area County Water District | 3,515 | 0 (not detected) |
| Nice Mutual Water Company | 2,929 | 0 (not detected) |
What to do in your house
Look up your address in Walnut Cove Mobile Estates'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 Walnut Cove Mobile Estates 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. A zero today does not rule out a jump later - the rules are tightening in 2027.