East Walnut Grove [Sws], CA
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 11 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. 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.
East Walnut Grove [Sws] at a glance
East Walnut Grove [Sws] serves about 300 people through 169 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Sacramento County, California. EPA system ID: CA3400106; phone on file: 916-875-2216. Call that number and ask whether your address has a lead, galvanized or unknown service line.
East Walnut Grove [Sws]'s lead record
That is down 5 ppb from 16 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for East Walnut Grove [Sws] is 16 ppb across 4 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 11 ppb over 10 |
| 2022 | 16 ppb over 15 |
| 2019 | 8.7 ppb |
| 2016 | 5.9 ppb |
Against other California systems
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. East Walnut Grove [Sws]'s 11 ppb sits at the 98th percentile in California and the 98th nationally (higher means more lead).
Nearby utilities
61 other systems share Sacramento County; 3 of them have a higher latest lead result than East Walnut Grove [Sws]. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Sacramento Main | 527,979 | 0 (not detected) |
| Sacramento Suburban Water District | 194,444 | 0 (not detected) |
| Scwa - Laguna/Vineyard | 188,417 | 0 (not detected) |
| Folsom, City Of - Main | 80,969 | 0 (not detected) |
| Citrus Heights Water District | 67,818 | 0 (not detected) |
| Cal Am - Suburban Rosemont | 54,893 | 0 (not detected) |
| Cal Am - Parkway | 50,646 | 1 ppb |
| Cal Am - Lincoln Oaks | 48,105 | 1 ppb |
| Golden State Water Co. - Cordova | 47,366 | 0 (not detected) |
| Elk Grove Water District | 44,065 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Sacramento, 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 East Walnut Grove [Sws] 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. See what changes at 10 ppb in 2027.