Frccsd Old Mill Ranch, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 4.64 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.
Who runs the water here
Frccsd Old Mill Ranch serves about 32 people through 36 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 Plumas County, California. EPA system ID: CA3200078; phone on file: 415-867-8652. They can tell you what your service line is made of and whether they pay to replace it.
Frccsd Old Mill Ranch's lead record
Against the period ending 2021 (4.05 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Frccsd Old Mill Ranch is 4.64 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 4.64 ppb |
| 2021 | 4.05 ppb |
| 2018 | 0 (not detected) |
How Frccsd Old Mill Ranch 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. Frccsd Old Mill Ranch's 4.64 ppb sits at the 91st percentile in California and the 90th nationally (higher means more lead).
Neighbouring systems
26 other systems share Plumas County; 0 of them have a higher latest lead result than Frccsd Old Mill Ranch. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| American Valley Csd | 3,778 | 0.3 ppb |
| Chester Public U.D. | 2,187 | 0 (not detected) |
| City Of Portola | 2,100 | 2 ppb |
| Hamilton Branch Csd | 1,874 | 0 (not detected) |
| West Almanor M.W.C. | 1,464 | 0 (not detected) |
| Ivcsd-Greenville | 795 | 1.49 ppb |
| Graeagle Water Company | 737 | 0 (not detected) |
| Grizzly Lake Csd-Delleker | 657 | 0 (not detected) |
| Whitehawk Ranch Mwc | 540 | 0 (not detected) |
| Lake Almanor Country Club Mwc | 500 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Twain, 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 Frccsd Old Mill Ranch 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. Systems that went over once often dip back under; here is what that means.