Is Mapleton City of Tap Water Safe? Quality Report

Water source: GWP
Ownership: Local government
Counties served: Cass

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MR	Monitoring	Archived	2002-06-01 → 2002-06-30
MR	Monitoring	Archived	2002-06-01 → 2002-06-30
MR	Monitoring	Archived	2002-06-01 → 2002-06-30

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Copper	712.7 µg/L 55% of the EPA limit 1300 µg/L worst single sample: 932 µg/L	30/30	SYR4	2012–2018
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	15/15	LCR	2024
Bromodichloromethane	4.164 µg/L No EPA limit set worst single sample: 4.17 µg/L	7/7	SYR4	2014–2019
Chloroform	10.162 µg/L No EPA limit set worst single sample: 10.24 µg/L	7/7	SYR4	2014–2019
Dibromochloromethane	1.317 µg/L No EPA limit set worst single sample: 1.32 µg/L	7/7	SYR4	2014–2019
Dichloroacetic Acid	5.856 µg/L No EPA limit set worst single sample: 5.88 µg/L	7/7	SYR4	2014–2019
Lead	14.266 µg/L 95% of the EPA limit 15 µg/L worst single sample: 18.7 µg/L	7/30	SYR4	2012–2018
TTHM	15.555 µg/L 19% of the EPA limit 80 µg/L worst single sample: 15.6 µg/L	7/7	SYR4	2014–2019
Total Haloacetic Acids (HAA5)	13.745 µg/L 23% of the EPA limit 60 µg/L worst single sample: 14.6 µg/L	7/7	SYR4	2014–2019
Trichloroacetic Acid	4.931 µg/L No EPA limit set worst single sample: 4.94 µg/L	7/7	SYR4	2014–2019
Dibromoacetic Acid	1.9845 µg/L No EPA limit set worst single sample: 2.07 µg/L	4/7	SYR4	2014–2019
Monochloroacetic Acid	2.28 µg/L No EPA limit set	1/7	SYR4	2014–2019

2 contaminants tested, none detected

BromoformMonobromoacetic Acid

Utility contact

Contact: KALVODA-BAUMANN, MICHELLE
Phone: 701-282-6992
Email: [email protected]

Frequently asked questions about Mapleton City of

Is Mapleton City of tap water safe to drink?

EPA monitoring detected 12 contaminants in Mapleton 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 Mapleton City of's water?

EPA monitoring detected Copper, Lead, Bromodichloromethane, Chloroform, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Mapleton City of serve?

Mapleton City of reports serving 1,320 people in North Dakota, per its EPA record.

Has Mapleton City of had any water quality violations?

The EPA has 3 violations on file for Mapleton 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.