Maine Water Company Warren Division, ME
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Maine Water Company Warren Division serves about 815 people through 326 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Knox County, Maine. EPA system ID: ME0091565; phone on file: 207-294-6940. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Maine Water Company Warren Division's lead record
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Maine Water Company Warren Division is 1.1 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2021 | 1.1 ppb |
| 2018 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2016 | 0 (not detected) |
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. Maine Water Company Warren Division's reported as 0 (not detected) sits at the 25th percentile in Maine and the 25th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
15 other systems share Knox County; 10 of them have a higher latest lead result than Maine Water Company Warren Division. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Maine Water Company Camden & Rockland | 21,315 | 4.5 ppb |
| Vinalhaven Water District | 1,053 | 1.5 ppb |
| North Haven Water Department | 740 | 0.64 ppb |
| Tenants Harbor Water District | 378 | 0 (not detected) |
| Port Clyde Water District | 330 | 4.1 ppb |
| Maine Water Company Union Division | 238 | 0.5 ppb |
| Mountainside Mobile Home Park | 130 | 2 ppb |
| Friendship Water Department | 85 | 1.1 ppb |
| Elliott Apartments | 55 | 0 (not detected) |
| Crawford Commons | 50 | 1 ppb |
Your move
Look up your address in Maine Water Company Warren Division's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Maine Water Company Warren Division 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. A zero today does not rule out a jump later - the rules are tightening in 2027.