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Tap water quality report

Stanley City of

EPA monitoring tested this supplier for 14 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

14
contaminants tested
11
detected
1,138
people served
0
health-based violations
North Dakota rankingsLead in North DakotaPFAS in North Dakota
Water source
SWP
Ownership
Local government
Counties served
Mountrail

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.

0
health-based violations
29
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2016-10-01 → 2016-12-31
MR Monitoring Resolved 2016-10-01 → 2016-12-31
MR Monitoring Resolved 2016-10-01 → 2016-12-31
MR Monitoring Resolved 2016-10-01 → 2016-12-31
MON Monitoring Resolved 2016-10-01 → 2016-10-31
MON Monitoring Resolved 2016-10-01 → 2016-10-31
MON Monitoring Resolved 2016-10-01 → 2016-10-31
MON Monitoring Resolved 2016-10-01 → 2016-10-31
MR Monitoring Resolved 2015-01-01 → 2015-03-31
MR Monitoring Resolved 2015-01-01 → 2015-03-31

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
Total Haloacetic Acids (HAA5)
8.962 µg/L 15%
of the EPA limit 60 µg/L
worst single sample: 10.91 µg/L
24/25 SYR4 2013–2019
Chloroform
7.052 µg/L
No EPA limit set
worst single sample: 7.42 µg/L
23/25 SYR4 2013–2019
Dichloroacetic Acid
7.418 µg/L
No EPA limit set
worst single sample: 8.79 µg/L
23/25 SYR4 2013–2019
TTHM
9.735 µg/L 12%
of the EPA limit 80 µg/L
worst single sample: 10.59 µg/L
23/25 SYR4 2013–2019
Bromodichloromethane
2.5295 µg/L
No EPA limit set
worst single sample: 2.66 µg/L
22/25 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2025
Lead
7.94 µg/L 53%
of the EPA limit 15 µg/L
worst single sample: 9.38 µg/L
16/30 SYR4 2013–2019
Dibromochloromethane
1.0005 µg/L
No EPA limit set
worst single sample: 1.15 µg/L
14/25 SYR4 2013–2019
Copper
49 µg/L 3.8%
of the EPA limit 1300 µg/L
worst single sample: 57.2 µg/L
11/30 SYR4 2013–2019
Trichloroacetic Acid
1.994 µg/L
No EPA limit set
worst single sample: 2.12 µg/L
7/25 SYR4 2013–2019
Dibromoacetic Acid
1.7 µg/L
No EPA limit set
 1/25 SYR4 2013–2019
3 contaminants tested, none detected
BromoformMonobromoacetic AcidMonochloroacetic Acid

Utility contact

Contact
ARNESON, ADA
Phone
701-628-2225
Email
[email protected]

Frequently asked questions about Stanley City of

Is Stanley City of tap water safe to drink?

EPA monitoring detected 11 contaminants in Stanley City of'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 Stanley City of's water?

EPA monitoring detected Total Haloacetic Acids (HAA5), Chloroform, Dichloroacetic Acid, TTHM, Bromodichloromethane, and others. The full list with the level and data source for each is above.

How many people does Stanley City of serve?

Stanley City of reports serving 1,138 people in North Dakota, per its EPA record.

Has Stanley City of had any water quality violations?

The EPA has 29 violations on file for Stanley City of, of which 0 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.