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Tap water quality report

Willowbank Colony

EPA monitoring tested this supplier for 55 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

55
contaminants tested
9
detected
95
people served
8
health-based violations
North Dakota rankingsLead in North DakotaPFAS in North Dakota
Water source
Ground water
Ownership
Private
Counties served
LaMoure

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

8
health-based violations
282
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2016-10-01 → 2016-12-31
MCL Health-based Resolved 2016-10-01 → 2016-12-31
MCL Health-based Resolved 2016-10-01 → 2016-12-31
MCL Health-based Resolved 2016-10-01 → 2016-12-31
MCL Health-based Resolved 2016-04-01 → 2016-06-30
MCL Health-based Resolved 2016-04-01 → 2016-06-30
MCL Health-based Resolved 2016-04-01 → 2016-06-30
MCL Health-based Resolved 2016-04-01 → 2016-06-30
MON Monitoring Resolved 2025-09-01 → 2025-09-30
MON Monitoring Resolved 2025-09-01 → 2025-09-30

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2023
Combined Radium (-226 And -228)
8.204 pCi/L 164%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
worst single sample: 8.21 pCi/L
7/7 SYR4 2015–2017
Combined Uranium
0.6800 µg/L 2.3%
of the EPA limit 30 µg/L
 6/7 SYR4 2015–2017
Gross Alpha, Excl. Radon And U
8.5425 pCi/L 57%
of the EPA limit 15 pCi/L
worst single sample: 9.97 pCi/L
6/7 SYR4 2015–2017
Copper
51.23 µg/L 3.9%
of the EPA limit 1300 µg/L
worst single sample: 55.2 µg/L
3/15 SYR4 2013–2017
Lead
9.236 µg/L 62%
of the EPA limit 15 µg/L
worst single sample: 10 µg/L
3/15 SYR4 2013–2017
Barium
3.53 µg/L 0.2%
of the EPA limit 2000 µg/L
 1/1 SYR4 2018
Fluoride
2450 µg/L 61%
of the EPA limit 4000 µg/L
 1/1 SYR4 2018
Selenium
1.8 µg/L 3.6%
of the EPA limit 50 µg/L
 1/1 SYR4 2018
46 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) PhthalateDinosebEndrinEthylbenzeneHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorNitrate-NitritePentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WIPF, CALVIN
Phone
701-493-2060

Frequently asked questions about Willowbank Colony

Is Willowbank Colony tap water safe to drink?

EPA monitoring detected 9 contaminants in Willowbank Colony's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Willowbank Colony's water?

EPA monitoring detected Lead, Combined Radium (-226 And -228), Combined Uranium, Gross Alpha, Excl. Radon And U, Copper, and others. The full list with the level and data source for each is above.

How many people does Willowbank Colony serve?

Willowbank Colony reports serving 95 people in North Dakota, per its EPA record.

Has Willowbank Colony had any water quality violations?

The EPA has 282 violations on file for Willowbank Colony, of which 8 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.