Rancho Corralitos, CA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
Rancho Corralitos at a glance
Rancho Corralitos serves about 87 people through 33 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Santa Cruz County, California. EPA system ID: CA4400624; phone on file: 714-642-2097. They can tell you what your service line is made of and whether they pay to replace it.
Rancho Corralitos's lead record
Against the period ending 2021 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Rancho Corralitos is 1 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2021 | 1 ppb |
| 2018 | 0 (not detected) |
How Rancho Corralitos 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. Rancho Corralitos's reported as 0 (not detected) sits at the 16th percentile in California and the 8th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
51 other systems share Santa Cruz County; 27 of them have a higher latest lead result than Rancho Corralitos. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Santa Cruz Water Department | 94,626 | 0 (not detected) |
| Watsonville, City Of | 65,231 | 1.2 ppb |
| Soquel Creek Water District | 40,962 | 2 ppb |
| San Lorenzo Valley Water Dist | 21,513 | 2.7 ppb |
| Scotts Valley Water District | 11,197 | 0.69 ppb |
| Slvwd - Felton Water System | 4,491 | 0.95 ppb |
| Central Water District | 2,726 | 0 (not detected) |
| Mission Springs Conference Center | 1,310 | 2.4 ppb |
| Mt. Hermon Association, Inc. | 1,176 | 0 (not detected) |
| Big Basin Water Company | 1,120 | 12 ppb |
Next steps for Corralitos, CA
Look up your address in Rancho Corralitos'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 Rancho Corralitos 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. A zero today does not rule out a jump later - the rules are tightening in 2027.