Leisure Pines Mutual Water Co, CA
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 12.6 ppb (monitoring period 2020-2022). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
About Leisure Pines Mutual Water Co
Leisure Pines Mutual Water Co serves about 340 people through 105 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Tuolumne County, California. EPA system ID: CA5500053; phone on file: 209-586-8953. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2022 (12.6 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Leisure Pines Mutual Water Co is 12.6 ppb across 5 monitoring periods, none of them over 15 ppb (2 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2022 | 12.6 ppb over 10 |
| 2022 | 12.6 ppb over 10 |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 2.6 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. Leisure Pines Mutual Water Co's 12.6 ppb sits at the 98th percentile in California and the 98th nationally (higher means more lead).
Other water systems in Tuolumne County
48 other systems share Tuolumne County; 1 of them has a higher latest lead result than Leisure Pines Mutual Water Co. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Tud - Upper Basin Water System | 13,331 | 0 (not detected) |
| Tud - Sonora/Jamestown Water System | 11,113 | 0 (not detected) |
| Tud - Columbia Water System | 5,482 | 5.4 ppb |
| Cdcr - Sierra Conservation Center | 3,571 | 0 (not detected) |
| Groveland Community Serv Dist | 3,400 | 0 (not detected) |
| Twain Harte Community Services District | 2,378 | 0 (not detected) |
| Tud - Tuolumne Water System | 1,798 | 0 (not detected) |
| Tud - Ponderosa | 1,781 | 0 (not detected) |
| Cold Springs Water Co | 1,771 | 2.8 ppb |
| Lake Don Pedro Csd | 1,700 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Twain Harte, 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 Leisure Pines Mutual Water Co 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. What a 90th-percentile result does and does not tell you: how to read a lead result. See what changes at 10 ppb in 2027.