Melrose Water Division (Mwra), MA
Exceeded the action level in the past
Latest 90th-percentile lead: 9.31 ppb (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 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.
Who runs the water here
Melrose Water Division (Mwra) serves about 29,938 people through 8,639 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Middlesex County, Massachusetts. EPA system ID: MA3178000; phone on file: 7819794172. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is up 1.93 ppb from 7.38 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Melrose Water Division (Mwra) is 24.2 ppb across 15 monitoring periods, 4 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 9.31 ppb |
| 2024 | 7.38 ppb |
| 2024 | 13.8 ppb over 10 |
| 2024 | 10.1 ppb over 10 |
| 2022 | 16.3 ppb over 15 |
| 2021 | 8.63 ppb |
| 2021 | 6.28 ppb |
| 2020 | 10.2 ppb over 10 |
| 2020 | 21.3 ppb over 15 |
| 2020 | 11.9 ppb over 10 |
| 2020 | 19.1 ppb over 15 |
| 2018 | 11.2 ppb over 10 |
| 2018 | 24.2 ppb over 15 |
| 2016 | 10 ppb |
| 2016 | 8.31 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. Melrose Water Division (Mwra)'s 9.31 ppb sits at the 95th percentile in Massachusetts and the 97th nationally (higher means more lead).
Nearby utilities
94 other systems share Middlesex County; 2 of them have a higher latest lead result than Melrose Water Division (Mwra). If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lowell Regional Water Utility | 120,418 | 0 (not detected) |
| Cambridge Water Department | 118,214 | 8 ppb |
| Newton Water Dept. (Mwra) | 88,931 | 1.09 ppb |
| Somerville Water Dept. (Mwra) | 81,045 | 6.62 ppb |
| Framingham Water Dept. (Mwra) | 72,362 | 1.74 ppb |
| Malden Water Division (Mwra) | 66,263 | 9.74 ppb |
| Waltham Water Department | 65,218 | 2.24 ppb |
| Medford Water Dept. (Mwra) | 61,700 | 8.31 ppb |
| Everett Water Dept. (Mwra) | 49,075 | 1.25 ppb |
| Arlington Water Dept. (Mwra) | 46,308 | 2.68 ppb |
Next steps for Melrose, MA
Test your own tap with a certified lab first-draw sample; Melrose, 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 Melrose Water Division (Mwra) 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. More in what a past exceedance means today.