Yulica, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.29 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.
Yulica at a glance
Yulica serves about 25 people through 13 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Nevada County, California. EPA system ID: CA2900546; phone on file: 530-273-3183. They can tell you what your service line is made of and whether they pay to replace it.
Yulica's lead record
Against the period ending 2023 (1.39 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Yulica is 7.75 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.29 ppb |
| 2023 | 1.39 ppb |
| 2023 | 1.94 ppb |
| 2020 | 0 (not detected) |
| 2019 | 3.04 ppb |
| 2018 | 0 (not detected) |
| 2018 | 7.75 ppb |
How Yulica 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. Yulica's 1.29 ppb sits at the 73rd percentile in California and the 60th nationally (higher means more lead).
Other water systems in Nevada County
20 other systems share Nevada County; 6 of them have a higher latest lead result than Yulica. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Truckee-Donner Pud, Main | 36,730 | 3.9 ppb |
| Nevada Id - E. George, Banner Mountain | 17,154 | 0 (not detected) |
| Nevada Id - Loma Rica | 14,072 | 0.77 ppb |
| Nevada Id - Lake Wildwood | 9,108 | 0 (not detected) |
| Nevada Id - Lake Of Pines | 6,870 | 0 (not detected) |
| City Of Grass Valley | 4,947 | 0.88 ppb |
| City Of Nevada City | 3,148 | 0 (not detected) |
| Washington Water District | 330 | 41.4 ppb |
| Creekside Village | 300 | 0 (not detected) |
| Ananda Village | 226 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Nevada City, 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 Yulica 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. Systems that went over once often dip back under; here is what that means.