The Macduffie School, MA
Lead detected, under the action levels
Latest 90th-percentile lead: 0.5 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.
About The Macduffie School
The Macduffie School serves about 305 people through 2 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Hampshire County, Massachusetts. EPA system ID: MA1111001; phone on file: 4134671601. They can tell you what your service line is made of and whether they pay to replace it.
The Macduffie School's lead record
Against the period ending 2025 (1.4 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for The Macduffie School is 1.6 ppb across 19 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.5 ppb |
| 2025 | 1.4 ppb |
| 2025 | 1 ppb |
| 2024 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2023 | 0.5 ppb |
| 2022 | 0 (not detected) |
| 2022 | 1.22 ppb |
| 2022 | 0.5 ppb |
| 2021 | 1.4 ppb |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 1 ppb |
| 2019 | 0 (not detected) |
| 2018 | 0.5 ppb |
| 2017 | 1.6 ppb |
Where this result ranks
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. The Macduffie School's 0.5 ppb sits at the 26th percentile in Massachusetts and the 43rd nationally (higher means more lead).
Other water systems in Hampshire County
27 other systems share Hampshire County; 22 of them have a higher latest lead result than The Macduffie School. 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 |
| Hatfield Water Dept | 3,164 | 23.1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Granby, MA 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 The Macduffie School whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 2380 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. What a 90th-percentile result does and does not tell you: how to read a lead result. The action level is dropping - the 10 ppb rule from 2027.