Williamstown Water Dept, VT
Lead detected, under the action levels
Latest 90th-percentile lead: 2.7 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
Williamstown Water Dept serves about 985 people through 378 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 Orange County, Vermont. EPA system ID: VT0005186; phone on file: 802-433-6671. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Williamstown Water Dept's lead record
Against the period ending 2021 (1.9 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Williamstown Water Dept is 2.7 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2.7 ppb |
| 2021 | 1.9 ppb |
| 2018 | 2.1 ppb |
How Williamstown Water Dept compares
Of the 372 Vermont systems with a lead result, the median latest reading is 1.4 ppb; 7 are over 15 ppb right now and 65 have gone over at some point. Williamstown Water Dept's 2.7 ppb sits at the 74th percentile in Vermont and the 79th nationally (higher means more lead).
Neighbouring systems
17 other systems share Orange County; 3 of them have a higher latest lead result than Williamstown Water Dept. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Randolph Village | 2,700 | 0 (not detected) |
| Bradford Village Water System | 1,512 | 3.1 ppb |
| Randolph Center Water System | 1,138 | 1.5 ppb |
| Fairlee Town Water | 967 | 0 (not detected) |
| Wells River Water System | 490 | 0 (not detected) |
| Newbury Village Inc | 480 | 1.6 ppb |
| Chelsea Water System | 450 | 5.6 ppb |
| Mobile Acres Mhp | 252 | 0 (not detected) |
| East Thetford Water Co | 250 | 0 (not detected) |
| Washington Fire District | 170 | 0.6 ppb |
Next steps for Williamstown, VT
Test your own tap with a certified lab first-draw sample; Williamstown, VT 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 Williamstown Water Dept 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.