Dingerville Usa Park, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 6.9 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.
Dingerville Usa Park at a glance
Dingerville Usa Park serves about 114 people through 80 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Butte County, California. EPA system ID: CA0400051; phone on file: 530-533-9343. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 6.9 ppb from 0 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Dingerville Usa Park is 6.9 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 6.9 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. Dingerville Usa Park's 6.9 ppb sits at the 95th percentile in California and the 94th nationally (higher means more lead).
Nearby utilities
41 other systems share Butte County; 2 of them have a higher latest lead result than Dingerville Usa Park. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Cal-Water Service Co.-Chico | 110,473 | 0 (not detected) |
| South Feather W&P - Miners Ranch | 22,638 | 0 (not detected) |
| Thermalito Water & Sewer Dist | 12,209 | 0 (not detected) |
| Cal-Water Service Co.-Oroville | 11,047 | 0.9 ppb |
| Del Oro Water Co.-Paradise Pines | 10,738 | 0.54 ppb |
| Paradise Irrigation District | 9,114 | 0 (not detected) |
| City Of Gridley | 7,269 | 0 (not detected) |
| City Of Biggs | 2,060 | 6.91 ppb |
| Durham Irrigation District | 1,581 | 0.74 ppb |
| Del Oro Water Co.-Lime Saddle Marina | 954 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Yorba Linda, 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 Dingerville Usa Park 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. Size matters more than most people expect: small vs large water systems.