Riselen Park, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 2.1 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. 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.
Who runs the water here
Riselen Park serves about 100 people through 35 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Yuba County, California. EPA system ID: CA5800823; phone on file: 916-893-3498. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Riselen Park's lead record
That is up 1.1 ppb from 1 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Riselen Park is 2.1 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 2.1 ppb |
| 2020 | 1 ppb |
How Riselen Park 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. Riselen Park's 2.1 ppb sits at the 79th percentile in California and the 74th nationally (higher means more lead).
Other water systems in Yuba County
20 other systems share Yuba County; 8 of them have a higher latest lead result than Riselen Park. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Linda County Water District | 21,654 | 1.69 ppb |
| Olivehurst Public Utility District | 16,595 | 0 (not detected) |
| Cal-Water Service Co.-Marysville | 12,888 | 0 (not detected) |
| Plumas Lake | 11,374 | 0 (not detected) |
| City Of Wheatland | 4,124 | 0.63 ppb |
| North Yuba Water District | 2,772 | 2.43 ppb |
| Beale Air Force Base | 2,000 | 0 (not detected) |
| River Highlands Csd | 200 | 0 (not detected) |
| Castlewood Mobile Home Park | 200 | 0.5 ppb |
| Countryside Mobile Home Park | 185 | 2.5 ppb |
Your move
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 Riselen 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. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.