Caspar South Service Company, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 2.7 ppb (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. 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.
Caspar South Service Company at a glance
Caspar South Service Company serves about 188 people through 95 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Mendocino County, California. EPA system ID: CA2300610; phone on file: 707-479-8880. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Caspar South Service Company's lead record
That is up 2.7 ppb from 0 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Caspar South Service Company is 7 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2.7 ppb |
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2017 | 7 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. Caspar South Service Company's 2.7 ppb sits at the 83rd percentile in California and the 79th nationally (higher means more lead).
Other water systems in Mendocino County
40 other systems share Mendocino County; 4 of them have a higher latest lead result than Caspar South Service Company. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ukiah, City Of | 16,067 | 0 (not detected) |
| Fort Bragg, City Of | 7,117 | 0 (not detected) |
| Willits, City Of | 6,175 | 0 (not detected) |
| Millview County Water District | 5,500 | 0 (not detected) |
| Redwood Valley County Water District | 5,200 | 0 (not detected) |
| Willow County Water District | 3,797 | 0 (not detected) |
| Brooktrails Township Csd | 3,632 | 0 (not detected) |
| North Gualala Water Company | 3,508 | 0 (not detected) |
| Rogina Water Company Inc. | 2,554 | 0 (not detected) |
| Laytonville County Water District | 1,152 | 0 (not detected) |
Next steps for Santa Rosa, CA
Test your own tap with a certified lab first-draw sample; Santa Rosa, 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 Caspar South Service 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Systems that went over once often dip back under; here is what that means.