County · California
Santa Cruz County, California: drinking water records
This overview covers 17 ZIP codes and 52 community water systems in Santa Cruz County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| San Lorenzo Valley Water Dist CA4410014 | 21,145 | 540 | 1 | 1 | 0 ppb |
| Slvwd - Felton Water System CA4410002 | 4,340 | 180 | 0 | 1 | 0 ppb |
| Santa Cruz Water Department CA4410010 | 94,626 | 234 | 0 | 0 | 0 ppb |
| Watsonville, City of CA4410011 | 65,231 | 840 | 6 | 0 | 1.2 ppb |
| Soquel Creek Water District CA4410017 | 40,809 | 840 | 0 | 0 | 2 ppb |
| Scotts Valley Water District CA4410013 | 11,197 | 180 | 2 | 0 | 0 ppb |
| Mt. Hermon Association, INC. CA4410008 | 1,176 | 0 | 0 | 1 | 0 ppb |
| Trout Gulch Mutual Water Company CA4400502 | 614 | 60 | 0 | 0 | 0 ppb |
| Summit West Mutual Water Co. CA4400617 | 481 | 0 | 0 | 1 | 0 ppb |
| Las Cumbres Mutual Water Co CA4400631 | 402 | 0 | 0 | 4 | 2.5 ppb |
| Forest Springs CA4400608 | 385 | 0 | 0 | 4 | 5.9 ppb |
| Rountree Facility(Prev. Sheriff'S Rehab) CA4400762 | 235 | 0 | 0 | 1 | 2.8 ppb |
| Ridge Mutual Water Company CA4400618 | 213 | 0 | 0 | 1 | 5.3 ppb |
| Fern Grove Water Club CA4400572 | 187 | 0 | 0 | 1 | 0 ppb |
| Big Redwood Park Water CA4400526 | 182 | 0 | 0 | 1 | 0 ppb |
| Summit Mutual Water Company CA4400559 | 152 | 0 | 0 | 2 | 6.4 ppb |
| Jardines del Valle CA4400664 | 130 | 0 | 0 | 1 | 0 ppb |
| Jarvis Mutual Water System CA4400611 | 125 | 0 | 0 | 1 | 0 ppb |
| Laurel Community League CA4400528 | 64 | 0 | 0 | 2 | 0 ppb |
| Cathedral Wood Mutual Water Company CA4400642 | 60 | 0 | 0 | 1 | 1.2 ppb |
| The Willows Resort CA4400850 | 57 | 0 | 0 | 2 | 0 ppb |
| River Grove Mutual Water Assn CA4400621 | 54 | 0 | 0 | 7 | 4 ppb |
| Bracken Brae Country Club CA4400604 | 52 | 0 | 0 | 1 | 0 ppb |
| Lakeview Apartments CA4400517 | 43 | 0 | 0 | 1 | 0 ppb |
| Aptos Hills Mutual Water Co CA4400634 | 32 | 0 | 0 | 1 | 0.8 ppb |
ZIP reports in Santa Cruz County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.