Rio Vista Mobile Home Park, CA
Exceeded the action level in the past
Latest 90th-percentile lead: 7.35 ppb (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Rio Vista Mobile Home Park serves about 543 people through 195 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Tehama County, California. EPA system ID: CA5200508; phone on file: 916-818-2121. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Rio Vista Mobile Home Park's lead record
Against the period ending 2021 (6.4 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Rio Vista Mobile Home Park is 22.5 ppb across 4 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 7.35 ppb |
| 2021 | 6.4 ppb |
| 2020 | 22.5 ppb over 15 |
| 2016 | 7.7 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. Rio Vista Mobile Home Park's 7.35 ppb sits at the 96th percentile in California and the 95th nationally (higher means more lead).
Nearby utilities
47 other systems share Tehama County; 0 of them have a higher latest lead result than Rio Vista Mobile Home Park. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Red Bluff | 14,286 | 0 (not detected) |
| City Of Corning | 8,244 | 1.08 ppb |
| Rio Alto Water District | 3,377 | 0 (not detected) |
| Los Molinos Comm. Services Dist. | 1,450 | 0 (not detected) |
| Gerber Las Flores Csd | 1,200 | 0 (not detected) |
| Mineral County Water District | 634 | 4.21 ppb |
| Vista Grande Water System | 468 | 0.89 ppb |
| City Of Tehama | 436 | 0 (not detected) |
| Sky View County Water | 429 | 0 (not detected) |
| River Ranch Mobile Home Park | 305 | 3.22 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Sacramento, 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 Rio Vista 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. The lead result guide covers how utilities pick the homes they sample. Why an old exceedance still matters: over the limit before, under it now.