Magic Mountain Mutual Water Company, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 6 ppb (monitoring period 2023-2023). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Magic Mountain Mutual Water Company at a glance
Magic Mountain Mutual Water Company serves about 171 people through 67 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Sonoma County, California. EPA system ID: CA4900637; phone on file: 707-632-5299. They can tell you what your service line is made of and whether they pay to replace it.
Magic Mountain Mutual Water Company's lead record
That is up 6 ppb from 0 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Magic Mountain Mutual Water Company is 6 ppb across 12 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 6 ppb |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2017 | 4.5 ppb |
| 2017 | 0 (not detected) |
| 2016 | 0 (not detected) |
| 2016 | 5.5 ppb |
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. Magic Mountain Mutual Water Company's 6 ppb sits at the 94th percentile in California and the 93rd nationally (higher means more lead).
Nearby utilities
128 other systems share Sonoma County; 3 of them have a higher latest lead result than Magic Mountain Mutual Water Company. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Santa Rosa, City Of | 178,452 | 1.32 ppb |
| Petaluma, City Of | 61,427 | 0 (not detected) |
| Rohnert Park, City Of | 43,821 | 0 (not detected) |
| Windsor, Town Of | 25,561 | 0 (not detected) |
| Valley Of The Moon Water District | 23,140 | 0 (not detected) |
| Healdsburg, City Of | 10,972 | 0 (not detected) |
| Sonoma, City Of | 10,619 | 0 (not detected) |
| Cloverdale, City Of | 8,710 | 0 (not detected) |
| California-American Larkfield (Puc) | 7,911 | 6 ppb |
| Sebastopol, City Of | 7,522 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Santa Barbara, 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 Magic Mountain Mutual Water Company whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1450 ppb (copper action level 1,300 ppb).
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. Systems that went over once often dip back under; here is what that means.