R & T Water System, ND
Lead detected, under the action levels
Latest 90th-percentile lead: 1.67 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. 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
R & T Water System serves about 1,003 people through 401 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 surface water, in Williams County, North Dakota. EPA system ID: ND5301152; phone on file: 701-568-3422. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is up 1.67 ppb from 0 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for R & T Water System is 1.8 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.67 ppb |
| 2021 | 0 (not detected) |
| 2018 | 1.8 ppb |
How R & T Water System 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. R & T Water System's 1.67 ppb sits at the 67th percentile in North Dakota and the 66th nationally (higher means more lead).
Neighbouring systems
9 other systems share Williams County; 1 of them has a higher latest lead result than R & T Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Williston City Of | 26,426 | 0 (not detected) |
| Northwest Rural Water District | 5,102 | 0 (not detected) |
| Tioga City Of | 2,202 | 0 (not detected) |
| Ray City Of | 950 | 0 (not detected) |
| Trenton Water Users Assoc | 840 | 0.8 ppb |
| Grenora City Of | 244 | 0 (not detected) |
| Prairie View Hoa | 226 | 0 (not detected) |
| Wildrose City Of | 110 | 26.3 ppb |
| Western Area Water Supply Authority | - | - |
Your move
Test your own tap with a certified lab first-draw sample; Ray, 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 R & T Water System 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.