Blackstone Water Department, MA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). 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.
Who runs the water here
Blackstone Water Department serves about 9,463 people through 2,797 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Worcester County, Massachusetts. EPA system ID: MA2032000; phone on file: 5088839331. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Blackstone Water Department is 1.1 ppb across 9 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2023 | 1.1 ppb |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 1 ppb |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
How Blackstone Water Department compares
Of the 535 Massachusetts systems with a lead result, the median latest reading is 1.7 ppb; 13 are over 15 ppb right now and 66 have gone over at some point. Blackstone Water Department's reported as 0 (not detected) sits at the 20th percentile in Massachusetts and the 37th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Worcester County
107 other systems share Worcester County; 75 of them have a higher latest lead result than Blackstone Water Department. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Worcester Dpwp, Water Supply Division | 206,518 | 2 ppb |
| Fitchburg Dpw Division Of Water Supply | 41,946 | 5 ppb |
| Leominster Water Division | 41,683 | 2.8 ppb |
| Shrewsbury Water Department | 38,325 | 0 (not detected) |
| Milford Water Department | 30,379 | 1 ppb |
| Westborough Water Department | 21,567 | 1.8 ppb |
| Gardner Water Department | 21,381 | 8 ppb |
| Southbridge Water Department | 19,562 | 3 ppb |
| Holden Water Division, Dpw | 18,016 | 3.1 ppb |
| Webster Water Department | 17,776 | 3.7 ppb |
Next steps for Blackstone, MA
Look up your address in Blackstone Water Department'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 Blackstone Water Department 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. The lead result guide covers how utilities pick the homes they sample. Small systems behave differently: why small systems go over more often.