Cornish Water District, ME
Lead detected, under the action levels
Latest 90th-percentile lead: 1.4 ppb (monitoring period 2021-2023). 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.
Cornish Water District at a glance
Cornish Water District serves about 758 people through 303 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in York County, Maine. EPA system ID: ME0090380; phone on file: 207-625-8642. They can tell you what your service line is made of and whether they pay to replace it.
Cornish Water District's lead record
Against the period ending 2020 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Cornish Water District is 3.3 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1.4 ppb |
| 2020 | 1 ppb |
| 2017 | 1.7 ppb |
| 2017 | 1.7 ppb |
| 2016 | 3.3 ppb |
Where this result ranks
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. Cornish Water District's 1.4 ppb sits at the 49th percentile in Maine and the 62nd nationally (higher means more lead).
Other water systems in York County
34 other systems share York County; 13 of them have a higher latest lead result than Cornish Water District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Maine Water Company Biddeford Saco Div | 42,508 | 0 (not detected) |
| Kennebunk, Kennebunkport & Wells Wd | 35,663 | 1 ppb |
| Kittery Water District | 14,478 | 2 ppb |
| Sanford Water District | 14,328 | 4 ppb |
| York Water District | 13,675 | 2 ppb |
| South Berwick Water District | 3,722 | 0 (not detected) |
| Lake Arrowhead Community Inc | 3,500 | 2 ppb |
| Berwick Water Department | 2,845 | 0 (not detected) |
| North Berwick Water District | 2,125 | 4 ppb |
| Maine Water Company Kezar Falls Division | 1,115 | 0 (not detected) |
Next steps for Cornish, ME
Test your own tap with a certified lab first-draw sample; Cornish, 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 Cornish Water District 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. The lead result guide covers how utilities pick the homes they sample. Systems that went over once often dip back under; here is what that means.