Yolo Co Housing Authority-El Rio Villa, CA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Yolo Co Housing Authority-El Rio Villa at a glance
Yolo Co Housing Authority-El Rio Villa serves about 432 people through 13 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Yolo County, California. EPA system ID: CA5700615; phone on file: 530-669-2240. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is down 7 ppb from 7 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Yolo Co Housing Authority-El Rio Villa is 7 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 7 ppb |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 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. Yolo Co Housing Authority-El Rio Villa's reported as 0 (not detected) sits at the 35th percentile in California and the 21st nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
15 other systems share Yolo County; 0 of them have a higher latest lead result than Yolo Co Housing Authority-El Rio Villa. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Davis | 67,826 | 0 (not detected) |
| City Of Woodland | 61,462 | 0 (not detected) |
| City Of West Sacramento | 55,991 | 0 (not detected) |
| Uc - Davis | 13,177 | 0 (not detected) |
| City Of Winters | 7,115 | 0 (not detected) |
| Esparto C.S.D. | 3,572 | 0 (not detected) |
| Wild Wings Golf Community | 1,115 | 0 (not detected) |
| Knights Landing Svc. Dist. | 1,099 | 0 (not detected) |
| Madison Service Dist | 876 | 0 (not detected) |
| Cal Am - Dunnigan | 602 | 0 (not detected) |
Your move
Look up your address in Yolo Co Housing Authority-El Rio Villa's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Yolo Co Housing Authority-El Rio Villa 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. A zero today does not rule out a jump later - the rules are tightening in 2027.