Mcclure Boat Club, Inc., CA
Lead detected, under the action levels
Latest 90th-percentile lead: 10 ppb (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. 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.
Who runs the water here
Mcclure Boat Club, Inc. serves about 36 people through 68 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Mariposa County, California. EPA system ID: CA2210905; phone on file: 415-608-2253. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 10 ppb from 0 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Mcclure Boat Club, Inc. is 10 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 10 ppb |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
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. Mcclure Boat Club, Inc.'s 10 ppb sits at the 97th percentile in California and the 97th nationally (higher means more lead).
Other water systems in Mariposa County
10 other systems share Mariposa County; 0 of them have a higher latest lead result than Mcclure Boat Club, Inc.. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mariposa Public Utility Dist | 2,000 | 0 (not detected) |
| Yosemite Nps-Yosemite Valley | 1,000 | 0 (not detected) |
| Ponderosa Basin Mutual Wtr Co | 798 | 0 (not detected) |
| Yosemite Nps-El Portal | 635 | 0 (not detected) |
| Yosemite West Water System | 420 | 2.2 ppb |
| Mariposa Pines Mutual | 294 | 0 (not detected) |
| Mpwd-Coulterville Csa 1 | 193 | 1.4 ppb |
| Yosemite Nps-Wawona | 150 | 0 (not detected) |
| Yosemite Terrace Estates | 130 | 6.6 ppb |
| Cedar Lodge | 28 | 3.7 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Snelling, 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 Mcclure Boat Club, Inc. 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. Size matters more than most people expect: small vs large water systems.