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Tap water quality report

Rainbow Estates

EPA monitoring tested this supplier for 66 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

66
contaminants tested
8
detected
30
people served
6
health-based violations
North Dakota rankingsLead in North DakotaPFAS in North Dakota
Water source
Ground water
Ownership
Private
Counties served
Dawson

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.

6
health-based violations
909
violations on file
1
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2023-11-29
TT Health-based Resolved 2023-11-29
TT Health-based Resolved 2023-11-29
TT Health-based Resolved 2023-01-18
TT Health-based Resolved 2023-01-18
TT Health-based Resolved 2023-01-18
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2025-07-01
MR Monitoring Unaddressed 2024-12-30
MR Monitoring Resolved 2023-10-05

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
Copper
68.95 µg/L 5.3%
of the EPA limit 1300 µg/L
worst single sample: 77 µg/L
22/36 SYR4 2014–2018
Lead
18.7 µg/L 125%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 33 µg/L
14/36 SYR4 2014–2018
Nitrate-Nitrite
2500 µg/L 25%
of the EPA limit 10000 µg/L
 8/14 SYR4 2014–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2024
Fluoride
2125 µg/L 53%
of the EPA limit 4000 µg/L
worst single sample: 2200 µg/L
4/4 SYR4 2015–2017
Gross Alpha, Excl. Radon And U
8.815 pCi/L 59%
of the EPA limit 15 pCi/L
worst single sample: 9.1 pCi/L
4/4 SYR4 2015
Combined Radium (-226 And -228)
1.095 pCi/L 22%
of the EPA limit 5 pCi/L
worst single sample: 1.1 pCi/L
2/3 SYR4 2015
Chromium
7 µg/L 7%
of the EPA limit 100 µg/L
 1/2 SYR4 2015–2019
58 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-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
RAINBOW ESTATES
Phone
701-319-5617
Email
DAN.VONDRACHEK@GMAIL.COM

Frequently asked questions about Rainbow Estates

Is Rainbow Estates tap water safe to drink?

EPA monitoring detected 8 contaminants in Rainbow Estates'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 Rainbow Estates's water?

EPA monitoring detected Copper, Lead, Nitrate-Nitrite, Lead, Fluoride, and others. The full list with the level and data source for each is above.

How many people does Rainbow Estates serve?

Rainbow Estates reports serving 30 people in North Dakota, per its EPA record.

Has Rainbow Estates had any water quality violations?

The EPA has 909 violations on file for Rainbow Estates, of which 6 are health-based (a contaminant limit or required treatment was breached) and 1 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.