Yosemite Nps-Hodgdon Meadow, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 4.7 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. 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.
Yosemite Nps-Hodgdon Meadow at a glance
Yosemite Nps-Hodgdon Meadow serves about 51 people through 24 service connections, which makes it a very small system under EPA's size classes. It is federally owned and draws groundwater, in Tuolumne County, California. EPA system ID: CA5510503; phone on file: 209-379-1055. They can tell you what your service line is made of and whether they pay to replace it.
Yosemite Nps-Hodgdon Meadow's lead record
That is up 4.7 ppb from 0 ppb in the period ending 2019. The highest 90th-percentile result EPA holds for Yosemite Nps-Hodgdon Meadow is 4.7 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2022 | 4.7 ppb |
| 2019 | 0 (not detected) |
| 2016 | 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. Yosemite Nps-Hodgdon Meadow's 4.7 ppb sits at the 91st percentile in California and the 90th nationally (higher means more lead).
Other water systems in Tuolumne County
48 other systems share Tuolumne County; 8 of them have a higher latest lead result than Yosemite Nps-Hodgdon Meadow. 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) |
Next steps for Yosemite Np, CA
Test your own tap with a certified lab first-draw sample; Yosemite Np, 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 Yosemite Nps-Hodgdon Meadow 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. The action level is dropping - the 10 ppb rule from 2027.