Smith River C.S.D., CA
Lead detected, under the action levels
Latest 90th-percentile lead: 4.05 ppb (monitoring period 2025-2025). 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
Smith River C.S.D. serves about 2,568 people through 693 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 Del Norte County, California. EPA system ID: CA0810002; phone on file: 707-487-5381. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2025 (4.48 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Smith River C.S.D. is 5.3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4.05 ppb |
| 2025 | 4.48 ppb |
| 2018 | 3.7 ppb |
| 2017 | 5.3 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. Smith River C.S.D.'s 4.05 ppb sits at the 90th percentile in California and the 88th nationally (higher means more lead).
Nearby utilities
15 other systems share Del Norte County; 2 of them have a higher latest lead result than Smith River C.S.D.. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Crescent City | 15,202 | 3.01 ppb |
| Bertsch Ocean View Csd | 2,669 | 0 (not detected) |
| Gasquet C.S.D. | 657 | 0.74 ppb |
| Big Rock C.S.D. | 513 | 0 (not detected) |
| Northcrest Mobile Home Park | 250 | 1.18 ppb |
| Klamath C.S.D. | 240 | 5.7 ppb |
| Redwood Park C.S.D. | 200 | 4.2 ppb |
| Hrc C.S.D. | 185 | 3.35 ppb |
| Pine Grove Mobile Home Park | 142 | 0 (not detected) |
| Las Palmas Mobile Home Park | 120 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Smith River, 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 Smith River C.S.D. whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 2525 ppb (copper action level 1,300 ppb).
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. The action level is dropping - the 10 ppb rule from 2027.