Rolling Hills Mutual Water Company, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.6 ppb (monitoring period 2017-2019). 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.
Rolling Hills Mutual Water Company at a glance
Rolling Hills Mutual Water Company serves about 66 people through 21 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Santa Barbara County, California. EPA system ID: CA4200851; phone on file: 805-878-9681. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is down 1.7 ppb from 3.3 ppb in the period ending 2016. The highest 90th-percentile result EPA holds for Rolling Hills Mutual Water Company is 3.3 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2019 | 1.6 ppb |
| 2016 | 3.3 ppb |
Where this result ranks
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. Rolling Hills Mutual Water Company's 1.6 ppb sits at the 75th percentile in California and the 65th nationally (higher means more lead).
Nearby utilities
62 other systems share Santa Barbara County; 14 of them have a higher latest lead result than Rolling Hills Mutual Water Company. 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 |
| Carpinteria Valley Water District | 16,356 | 0 (not detected) |
| 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) |
Your move
Test your own tap with a certified lab first-draw sample; Orcutt, 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 Rolling Hills Mutual Water Company 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. The action level is dropping - the 10 ppb rule from 2027.