Sky Acres Mutual Water Corp, CA
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 12 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
About Sky Acres Mutual Water Corp
Sky Acres Mutual Water Corp serves about 175 people through 64 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Madera County, California. EPA system ID: CA2000524; phone on file: 559-760-8616. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is down 15 ppb from 27 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Sky Acres Mutual Water Corp is 27 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 12 ppb over 10 |
| 2025 | 27 ppb over 15 |
| 2022 | 0.73 ppb |
| 2019 | 0 (not detected) |
| 2016 | 1 ppb |
How Sky Acres Mutual Water Corp compares
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. Sky Acres Mutual Water Corp's 12 ppb sits at the 98th percentile in California and the 98th nationally (higher means more lead).
Other water systems in Madera County
67 other systems share Madera County; 1 of them has a higher latest lead result than Sky Acres Mutual Water Corp. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Madera | 66,560 | 3 ppb |
| Chowchilla City Water Dept | 13,916 | 0 (not detected) |
| Riverstone/Rootcreek Water District | 10,276 | 1.2 ppb |
| Madera Valley Water Company | 6,524 | 0 (not detected) |
| Yosemite Spring Park Util Co | 5,300 | 0 (not detected) |
| Tesoro Viejo Master Mwc, Inc. | 4,660 | 0 (not detected) |
| Cal Am - Oakhurst | 3,710 | 5 ppb |
| Valley State Prison | 3,151 | 0 (not detected) |
| Madera Co Md10a-Madera Ranchos | 3,072 | 5.4 ppb |
| Cal Am - Bass Lake | 3,066 | 2 ppb |
Next steps for Oakhurst, CA
Test your own tap with a certified lab first-draw sample; Oakhurst, 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 Sky Acres Mutual Water Corp 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. The lead result guide covers how utilities pick the homes they sample. This system is in the band the 2027 10 ppb rule changes.