Carpinteria Valley Water District, CA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
About Carpinteria Valley Water District
Carpinteria Valley Water District serves about 16,356 people through 4,453 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Santa Barbara County, California. EPA system ID: CA4210001; phone on file: 805-600-4871. They can tell you what your service line is made of and whether they pay to replace it.
Carpinteria Valley Water District's lead record
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Carpinteria Valley Water District is 3.1 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 2.6 ppb |
| 2019 | 2.6 ppb |
| 2016 | 3.1 ppb |
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. Carpinteria Valley Water District's reported as 0 (not detected) sits at the 55th percentile in California and the 38th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Santa Barbara County
62 other systems share Santa Barbara County; 15 of them have a higher latest lead result than Carpinteria Valley Water District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Santa Maria Utilities Department | 112,208 | 0 (not detected) |
| City Of Santa Barbara Water Department | 93,334 | 2.5 ppb |
| Goleta Water District | 85,535 | 0 (not detected) |
| Lompoc-City Water Utility Div | 40,538 | 0 (not detected) |
| Golden State Water Company - Orcutt | 34,267 | 2.6 ppb |
| American Water O&M, Llc - Vsfb | 14,971 | 0 (not detected) |
| Montecito Water Dist | 12,010 | 0 (not detected) |
| Guadalupe Water Department | 8,897 | 0 (not detected) |
| Vandenberg Village Comm. Serv. Dist. | 7,308 | 0 (not detected) |
| Santa Ynez River Water Cons. Dist. Id#1 | 7,022 | 0 (not detected) |
What to do in your house
Look up your address in Carpinteria Valley Water District'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 Carpinteria Valley Water District 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. Small systems behave differently: why small systems go over more often.