Sharondale Mesa Hoa, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 0.6 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. 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
Sharondale Mesa Hoa serves about 340 people through 244 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Riverside County, California. EPA system ID: CA3301879; phone on file: 909-795-8921. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Sharondale Mesa Hoa's lead record
Against the period ending 2021 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Sharondale Mesa Hoa is 0.6 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0.6 ppb |
| 2021 | 0 (not detected) |
| 2018 | 0 (not detected) |
Against other California systems
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. Sharondale Mesa Hoa's 0.6 ppb sits at the 66th percentile in California and the 45th nationally (higher means more lead).
Other water systems in Riverside County
92 other systems share Riverside County; 32 of them have a higher latest lead result than Sharondale Mesa Hoa. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Eastern Municipal Wd | 659,923 | 2.8 ppb |
| Riverside, City Of | 302,776 | 1 ppb |
| Coachella Vwd: Cove Community | 270,000 | 0 (not detected) |
| Elsinore Valley Mwd | 169,455 | 1.3 ppb |
| Corona, City Of | 169,380 | 1.8 ppb |
| Rancho California Water District | 146,147 | 0 (not detected) |
| Jurupa Community Sd | 134,638 | 0 (not detected) |
| Indio Water Authority | 89,137 | 0 (not detected) |
| Western Mwd | 87,955 | 1.3 ppb |
| Desert Water Agency | 75,588 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Calimesa, 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 Sharondale Mesa Hoa 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. The action level is dropping - the 10 ppb rule from 2027.