Hatfield Water Dept, MA
Above the federal action level
Latest 90th-percentile lead: 23.1 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. In the most recent monitoring period, more than 10% of the sampled homes measured above 15 ppb. Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking now, and test your own tap.
Hatfield Water Dept at a glance
Hatfield Water Dept serves about 3,164 people through 1,346 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 Hampshire County, Massachusetts. EPA system ID: MA1127000; phone on file: 4133450345. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is up 20.1 ppb from 3 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Hatfield Water Dept is 23.1 ppb across 9 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 23.1 ppb over 15 |
| 2025 | 3 ppb |
| 2024 | 2.4 ppb |
| 2023 | 3 ppb |
| 2022 | 5.2 ppb |
| 2021 | 2.24 ppb |
| 2020 | 5.5 ppb |
| 2019 | 5.9 ppb |
| 2017 | 3.1 ppb |
How Hatfield Water Dept 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. Hatfield Water Dept's 23.1 ppb sits at the 99th percentile in Massachusetts and the 99th nationally (higher means more lead).
Nearby utilities
27 other systems share Hampshire County; 0 of them have a higher latest lead result than Hatfield Water Dept. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Amherst Dpw Water Division | 39,263 | 8 ppb |
| Northampton Water Division | 29,571 | 1.2 ppb |
| Easthampton Water Dept | 16,211 | 2.5 ppb |
| South Hadley Fd #1 (Mwra) | 14,800 | 4 ppb |
| Ware Water Dept | 10,066 | 4.7 ppb |
| South Hadley Fire District #2 Water Dept | 6,200 | 5.3 ppb |
| Southampton Water Dept | 4,853 | 4.1 ppb |
| Hadley Dpw Water Division | 4,819 | 4.6 ppb |
| Belchertown Water District | 3,253 | 3 ppb |
| Huntington Water Dept | 2,180 | 0 (not detected) |
What to do in your house
Use a filter certified to NSF/ANSI 53 for lead on the tap you drink and cook from, now, before you test. Then test your own tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Hatfield 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. The lead result guide covers how utilities pick the homes they sample. Systems that went over once often dip back under; here is what that means.