Water quality for ZIP code 93440
ZIP 93440 covers Los Alamos in Santa Barbara County, California, one of 24 ZIP codes in the county. 151 active public water systems serve the county; 47 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Santa Barbara County
62 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Bobcat Springs Mutual Water Company |
115 | 0 | 4.8 mi | |
| Jonata Homeowners Association |
38 | 0 | 5.9 mi | |
| Vista Hills Mutual Water Company |
75 | 2 | 6.2 mi | |
| Walking M Ranches |
54 | 2 | 6.8 mi | |
| City of Buellton Water Division |
5,091 | 0 | 7.2 mi | |
| Mesa Hills Mutual Water Company |
34 | 0 | 8.2 mi | |
| Midland School |
100 | 0 | 8.2 mi | |
| Rancho Ynecita |
129 | 0 | 8.4 mi | |
| Santa Rita Water |
66 | 1 | 8.5 mi | |
| Oak Trail Ranch |
102 | 0 | 8.6 mi | |
| Chalk Hill Estates HOA Lompoc |
38 | 0 | 8.8 mi | |
| Oak Trail Estates |
211 | 0 | 9.5 mi | |
| Santa Ynez Roblar Mobile Home Park |
25 | 4 | 9.5 mi | |
| Santa Ynez River Water Cons. Dist. Id#1 |
7,022 | 0 | 9.7 mi | |
| Solvang Water Division |
5,980 | 0 | 9.9 mi | |
| Woodstock Ranch |
325 | 0 | 9.9 mi | |
| Cachuma Project |
0 | 0 | 9.9 mi | |
| Rancho Marcelino Water |
240 | 0 | 10.3 mi | |
| Skyline Park |
295 | 0 | 10.5 mi | |
| Sisquoc |
137 | 0 | 11.0 mi | |
| Mission Hills Csd |
3,600 | 0 | 12.2 mi | |
| Rolling Hills Mutual Water Company |
66 | 1 | 12.7 mi | |
| Meadowlark Ranches Mutual Water Company |
150 | 1 | 12.8 mi | |
| Santa Ynez Rancho Estates |
304 | 0 | 12.9 mi | |
| Golden State Water Company Lake Marie |
548 | 0 | 13.1 mi |
Non-community systems in Santa Barbara County (88: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Santa Barbara County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the town EPA lists the system as serving, from OpenStreetMap.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The California records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.