Bachelor Knolls, MA
Exceeded the action level in the past
Latest 90th-percentile lead: 1.3 ppb (monitoring period 2025-2027). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
About Bachelor Knolls
Bachelor Knolls serves about 101 people through 31 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: MA1111000; phone on file: 4135636007. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is up 1.3 ppb from 0 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Bachelor Knolls is 21.8 ppb across 13 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2027 | 1.3 ppb |
| 2024 | 0 (not detected) |
| 2024 | 1.9 ppb |
| 2023 | 1.2 ppb |
| 2022 | 0 (not detected) |
| 2021 | 1.4 ppb |
| 2018 | 0 (not detected) |
| 2018 | 1.9 ppb |
| 2017 | 2.5 ppb |
| 2017 | 1.58 ppb |
| 2017 | 16 ppb over 15 |
| 2016 | 21.8 ppb over 15 |
| 2016 | 0.95 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. Bachelor Knolls's 1.3 ppb sits at the 40th percentile in Massachusetts and the 60th nationally (higher means more lead).
Other water systems in Hampshire County
27 other systems share Hampshire County; 16 of them have a higher latest lead result than Bachelor Knolls. 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 |
Next steps for Granby, MA
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 Bachelor Knolls 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. Why an old exceedance still matters: over the limit before, under it now.