Gold Rush Mobile Home Park, CA
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 11.7 ppb (monitoring period 2021-2023). 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 Gold Rush Mobile Home Park
Gold Rush Mobile Home Park serves about 67 people through 57 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: CA5500128; phone on file: 949-388-8191. They can tell you what your service line is made of and whether they pay to replace it.
Gold Rush Mobile Home Park's lead record
That is up 10.5 ppb from 1.2 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Gold Rush Mobile Home Park is 11.7 ppb across 3 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 11.7 ppb over 10 |
| 2020 | 1.2 ppb |
| 2017 | 3.6 ppb |
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. Gold Rush Mobile Home Park's 11.7 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; 4 of them have a higher latest lead result than Gold Rush Mobile Home Park. 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; San Juan Capistrano, 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 Gold Rush Mobile Home Park 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.