Casselton City Of, ND
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 12.1 ppb (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
Casselton City Of at a glance
Casselton City Of serves about 2,513 people through 575 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 Cass County, North Dakota. EPA system ID: ND0900166; phone on file: 701-347-4861. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 6.37 ppb from 5.73 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Casselton City Of is 12.1 ppb across 3 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 12.1 ppb over 10 |
| 2021 | 5.73 ppb |
| 2018 | 4.98 ppb |
How Casselton City Of 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. Casselton City Of's 12.1 ppb sits at the 98th percentile in North Dakota and the 98th nationally (higher means more lead).
Other water systems in Cass County
25 other systems share Cass County; 0 of them have a higher latest lead result than Casselton City Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Fargo City Of | 120,762 | 1.89 ppb |
| West Fargo City Of | 34,858 | 0 (not detected) |
| Cass Rural Water District Fargo | 4,242 | 1.63 ppb |
| Cass Rural Water District-Phase I | 3,658 | 0 (not detected) |
| Cass Rural Water District-Phase Ii | 1,700 | 0 (not detected) |
| Cass Rural Water District-Phase Iii | 1,682 | 0 (not detected) |
| Horace City Of | 1,641 | 0 (not detected) |
| Mapleton City Of | 1,320 | 0 (not detected) |
| Harwood City Of | 718 | 6.72 ppb |
| Kindred City Of | 692 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Casselton, 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 Casselton 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. What a 90th-percentile result does and does not tell you: how to read a lead result. This system is in the band the 2027 10 ppb rule changes.