Coleharbor City Of, ND
Lead detected, under the action levels
Latest 90th-percentile lead: 3.6 ppb (monitoring period 2023-2025). 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.
Who runs the water here
Coleharbor City Of serves about 79 people through 47 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 Mclean County, North Dakota. EPA system ID: ND2800194; phone on file: 701-226-1154. They can tell you what your service line is made of and whether they pay to replace it.
Coleharbor City Of's lead record
Against the period ending 2022 (4.1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Coleharbor City Of is 4.1 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.6 ppb |
| 2022 | 4.1 ppb |
| 2019 | 0.96 ppb |
| 2016 | 3.77 ppb |
Against other North Dakota systems
Of the 300 North Dakota systems with a lead result, the median latest reading is 0.91 ppb; 3 are over 15 ppb right now and 20 have gone over at some point. Coleharbor City Of's 3.6 ppb sits at the 86th percentile in North Dakota and the 85th nationally (higher means more lead).
Nearby utilities
11 other systems share Mclean County; 2 of them have a higher latest lead result than Coleharbor City Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Garrison Rural Water District | 1,805 | 0 (not detected) |
| Mclean-Sheridan Water District-System 1 | 1,800 | 1.07 ppb |
| Garrison City Of | 1,453 | 2.12 ppb |
| Washburn City Of | 1,246 | 5.08 ppb |
| Underwood City Of | 778 | 2.6 ppb |
| Turtle Lake City Of | 581 | 4.16 ppb |
| Mclean-Sheridan Water District-System 3 | 400 | 2.22 ppb |
| Mclean-Sheridan Water District-System 2 | 390 | 0.78 ppb |
| Max City Of | 334 | 0 (not detected) |
| Riverdale City Of | 205 | 1.22 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Coleharbor, ND 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 Coleharbor City Of 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.