Monson Utilities District, ME
Lead detected, under the action levels
Latest 90th-percentile lead: 1.4 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. 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 Monson Utilities District
Monson Utilities District serves about 298 people through 119 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Piscataquis County, Maine. EPA system ID: ME0091030; phone on file: 207-997-3641. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Monson Utilities District's lead record
Against the period ending 2025 (1.3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Monson Utilities District is 4.1 ppb across 11 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.4 ppb |
| 2025 | 1.3 ppb |
| 2025 | 1.5 ppb |
| 2024 | 3.1 ppb |
| 2024 | 2.4 ppb |
| 2023 | 3.3 ppb |
| 2019 | 1.7 ppb |
| 2018 | 2.5 ppb |
| 2017 | 1 ppb |
| 2016 | 1.8 ppb |
| 2016 | 4.1 ppb |
Against other Maine systems
Of the 358 Maine systems with a lead result, the median latest reading is 1.5 ppb; 2 are over 15 ppb right now and 40 have gone over at some point. Monson Utilities District's 1.4 ppb sits at the 48th percentile in Maine and the 62nd nationally (higher means more lead).
Neighbouring systems
7 other systems share Piscataquis County; 3 of them have a higher latest lead result than Monson Utilities District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Dover-Foxcroft Water District | 2,400 | 0 (not detected) |
| Milo Water District | 1,720 | 15 ppb |
| Guilford-Sangerville Utilities District | 1,535 | 2.5 ppb |
| Maine Water Company Greenville Division | 1,335 | 0 (not detected) |
| Brownville Jct Water Dept | 663 | 1.5 ppb |
| Brownville Water Department | 253 | 1 ppb |
| Covered Bridge Apartments | 25 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Monson, ME 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 Monson Utilities District whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1600 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. Systems that went over once often dip back under; here is what that means.