Malletts Bay Water Co, VT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Malletts Bay Water Co at a glance
Malletts Bay Water Co serves about 533 people through 232 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 surface water, in Chittenden County, Vermont. EPA system ID: VT0020333; phone on file: 802-864-7454. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
The highest 90th-percentile result EPA holds for Malletts Bay Water Co is 0 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
How Malletts Bay Water Co 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. Malletts Bay Water Co's reported as 0 (not detected) sits at the 22nd percentile in Vermont and the 23rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Chittenden County
44 other systems share Chittenden County; 23 of them have a higher latest lead result than Malletts Bay Water Co. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Burlington Dept Public Works Water Div | 42,000 | 1.4 ppb |
| South Burlington City Water System | 19,500 | 0 (not detected) |
| Colchester Water System | 11,299 | 0 (not detected) |
| Essex Town Water System | 9,734 | 0 (not detected) |
| Essex Jct Water Dept | 9,500 | 0.7 ppb |
| Winooski Water Dept | 8,500 | 0.4 ppb |
| Colchester Fire District 2 | 8,300 | 0 (not detected) |
| Milton Water Dept | 8,260 | 0 (not detected) |
| Williston Water Dept | 7,259 | 1.2 ppb |
| Shelburne Water Dept | 5,764 | 0 (not detected) |
Your move
Look up your address in Malletts Bay Water Co's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Malletts Bay Water Co 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. A zero today does not rule out a jump later - the rules are tightening in 2027.