Crown Butte Coop, ND
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
About Crown Butte Coop
Crown Butte Coop serves about 320 people through 93 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Morton County, North Dakota. EPA system ID: ND3000597; phone on file: 701-595-6533. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Crown Butte Coop is 1.5 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 1.5 ppb |
How Crown Butte Coop compares
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. Crown Butte Coop's reported as 0 (not detected) sits at the 19th percentile in North Dakota and the 19th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
11 other systems share Morton County; 5 of them have a higher latest lead result than Crown Butte Coop. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mandan City Of | 21,769 | 4.2 ppb |
| Missouri West Water System | 4,303 | 0 (not detected) |
| New Salem City Of | 946 | 1.54 ppb |
| Glen Ullin City Of | 807 | 0 (not detected) |
| Hebron City Of | 747 | 0 (not detected) |
| Flasher City Of | 232 | 0.52 ppb |
| Riverview Heights | 200 | 0 (not detected) |
| Southwest Wa-Junction Inn(Missouri West) | 173 | 0 (not detected) |
| Almont City Of | 122 | 0 (not detected) |
| Southwest Wa-Tower Hill (Missouri West) | 43 | 1.67 ppb |
Next steps for Mandan, ND
Look up your address in Crown Butte Coop'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 Crown Butte Coop 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. Why sampled homes are the worst-case ones is in the guide to reading the number. A zero today does not rule out a jump later - the rules are tightening in 2027.