Mt. Konocti Mutual Water Company, CA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). 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.
Who runs the water here
Mt. Konocti Mutual Water Company serves about 4,360 people through 1,590 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Lake County, California. EPA system ID: CA1710014; phone on file: 707-277-7466. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Mt. Konocti Mutual Water Company's lead record
Against the period ending 2017 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Mt. Konocti Mutual Water Company is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2017 | 0 (not detected) |
Where this result ranks
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. Mt. Konocti Mutual Water Company's reported as 0 (not detected) sits at the 49th percentile in California and the 34th 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 Mt. Konocti Mutual Water Company. 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 |
| 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) |
| Clearlake Oaks County Water District | 2,359 | 0 (not detected) |
Next steps for Kelseyville, CA
Look up your address in Mt. Konocti Mutual Water Company'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 Mt. Konocti Mutual Water Company 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. A zero today does not rule out a jump later - the rules are tightening in 2027.