Riviera Terrace Tc, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 0.69 ppb (monitoring period 2023-2025). 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.
Riviera Terrace Tc at a glance
Riviera Terrace Tc serves about 435 people through 143 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Anchorage Municipality County, California. EPA system ID: AK2210451; phone on file: 818-825-5488. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2022 (0.21 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Riviera Terrace Tc is 10.1 ppb across 4 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.69 ppb |
| 2022 | 0.21 ppb |
| 2019 | 10.1 ppb over 10 |
| 2016 | 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. Riviera Terrace Tc's 0.69 ppb sits at the 66th percentile in California and the 46th nationally (higher means more lead).
Next steps for Encino, CA
Test your own tap with a certified lab first-draw sample; Encino, 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 Riviera Terrace Tc 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.