Mci Norfolk/Cedar Junction/Walpole, MA
Lead detected, under the action levels
Latest 90th-percentile lead: 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. 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 Mci Norfolk/Cedar Junction/Walpole
Mci Norfolk/Cedar Junction/Walpole serves about 2,200 people through 12 service connections, which makes it a small system under EPA's size classes. It is owned by the state and draws groundwater, in Norfolk County, Massachusetts. EPA system ID: MA2208001; phone on file: 5084223661. 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 down 2 ppb from 3 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Mci Norfolk/Cedar Junction/Walpole is 8 ppb across 10 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2024 | 3 ppb |
| 2024 | 8 ppb |
| 2023 | 4 ppb |
| 2022 | 2 ppb |
| 2021 | 1 ppb |
| 2020 | 1 ppb |
| 2019 | 1 ppb |
| 2018 | 2 ppb |
| 2018 | 2 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. Mci Norfolk/Cedar Junction/Walpole's 1 ppb sits at the 32nd percentile in Massachusetts and the 54th nationally (higher means more lead).
Nearby utilities
38 other systems share Norfolk County; 28 of them have a higher latest lead result than Mci Norfolk/Cedar Junction/Walpole. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Tri Town Water Board | 856,000 | - |
| Quincy Water Dept. (Mwra) | 106,000 | 14.4 ppb |
| Brookline Water And Sewer Division | 63,191 | 2 ppb |
| Weymouth Water Department | 57,871 | 1.2 ppb |
| Randolph/Holbrook Joint Water Board | 46,519 | - |
| Dedham Westwood Water Dist. | 41,630 | 2 ppb |
| Braintree Water And Sewer Dept. | 39,143 | 4.8 ppb |
| Randolph Water Department | 35,114 | 3 ppb |
| Franklin Water Department | 33,706 | 5 ppb |
| Needham Water Dept | 31,664 | 2 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Milford, 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 Mci Norfolk/Cedar Junction/Walpole 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.