Quincy Water Dept. (Mwra), MA
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 14.4 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. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
Who runs the water here
Quincy Water Dept. (Mwra) serves about 106,000 people through 23,750 service connections, which makes it a very large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Norfolk County, Massachusetts. EPA system ID: MA3243000; phone on file: 6173761910. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2024 (13.9 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Quincy Water Dept. (Mwra) is 82.1 ppb across 17 monitoring periods, 7 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 14.4 ppb over 10 |
| 2024 | 13.9 ppb over 10 |
| 2024 | 7.4 ppb |
| 2022 | 10 ppb |
| 2021 | 16.5 ppb over 15 |
| 2021 | 18.5 ppb over 15 |
| 2020 | 8.17 ppb |
| 2020 | 21 ppb over 15 |
| 2020 | 5.67 ppb |
| 2019 | 14.5 ppb over 10 |
| 2018 | 8.29 ppb |
| 2018 | 82.1 ppb over 15 |
| 2017 | 17.4 ppb over 15 |
| 2016 | 8.74 ppb |
| 2016 | 13.2 ppb over 10 |
| 2016 | 17.4 ppb over 15 |
| 2016 | 15.5 ppb over 15 |
Against other Massachusetts systems
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. Quincy Water Dept. (Mwra)'s 14.4 ppb sits at the 98th percentile in Massachusetts and the 99th nationally (higher means more lead).
Nearby utilities
38 other systems share Norfolk County; 1 of them has a higher latest lead result than Quincy Water Dept. (Mwra). 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 | - |
| 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 |
| Norwood Water Dept. (Mwra) | 29,909 | 7 ppb |
Next steps for Quincy, MA
Test your own tap with a certified lab first-draw sample; Quincy, 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 Quincy Water Dept. (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. What a 90th-percentile result does and does not tell you: how to read a lead result. See what changes at 10 ppb in 2027.