Pinecrest Permittees Assn, CA
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 12.1 ppb (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. 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.
Who runs the water here
Pinecrest Permittees Assn serves about 55 people through 390 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Tuolumne County, California. EPA system ID: CA5510004; phone on file: 209-965-3234. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 12.1 ppb from 0 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Pinecrest Permittees Assn is 12.1 ppb across 5 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 12.1 ppb over 10 |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 3.3 ppb |
How Pinecrest Permittees Assn 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. Pinecrest Permittees Assn's 12.1 ppb sits at the 98th percentile in California and the 98th nationally (higher means more lead).
Neighbouring systems
48 other systems share Tuolumne County; 2 of them have a higher latest lead result than Pinecrest Permittees Assn. 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) |
Your move
Test your own tap with a certified lab first-draw sample; Pinecrest, 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 Pinecrest Permittees Assn 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. This system is in the band the 2027 10 ppb rule changes.