Maxwell Public Utility District, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 0.98 ppb (monitoring period 2021-2023). 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.
Maxwell Public Utility District at a glance
Maxwell Public Utility District serves about 1,175 people through 393 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Colusa County, California. EPA system ID: CA0610003; phone on file: 530-438-2505. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Maxwell Public Utility District's lead record
Against the period ending 2020 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Maxwell Public Utility District is 0.98 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0.98 ppb |
| 2020 | 0 (not detected) |
| 2017 | 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. Maxwell Public Utility District's 0.98 ppb sits at the 69th percentile in California and the 50th nationally (higher means more lead).
Nearby utilities
8 other systems share Colusa County; 3 of them have a higher latest lead result than Maxwell Public Utility District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Colusa | 6,675 | 6.8 ppb |
| City Of Williams | 5,538 | 0 (not detected) |
| Arbuckle Public Utility District | 3,251 | 0 (not detected) |
| Colusa Co. Wwd #1 - Grimes | 512 | 5.77 ppb |
| Colusa Co. Service Area #1-Century Ranch | 450 | 0 (not detected) |
| Colusa Co. Wwd #2 - Princeton | 382 | 1.3 ppb |
| Del Oro Wc - Arbuckle District | 185 | 0 (not detected) |
| Colusa Co. Service Area #2-Stonyford | 160 | 0 (not detected) |
Next steps for Maxwell, CA
Test your own tap with a certified lab first-draw sample; Maxwell, 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 Maxwell Public Utility District 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.