Is Ncmrwa Tiber Service Area Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: Liberty

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
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-01-01 → 2024-03-31
MCL	Health-based	Resolved	2024-01-01 → 2024-03-31
MCL	Health-based	Resolved	2024-01-01 → 2024-03-31
MCL	Health-based	Resolved	2024-01-01 → 2024-03-31
MCL	Health-based	Resolved	2024-01-01 → 2024-03-31
MCL	Health-based	Resolved	2024-01-01 → 2024-03-31
MCL	Health-based	Resolved	2023-10-01 → 2023-12-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Bromodichloromethane	13.4 µg/L No EPA limit set worst single sample: 15 µg/L	17/17	SYR4	2016–2019
Chloroform	83.2 µg/L No EPA limit set worst single sample: 104 µg/L	17/17	SYR4	2016–2019
Dibromochloromethane	2.66 µg/L No EPA limit set worst single sample: 2.9 µg/L	17/17	SYR4	2016–2019
Dichloroacetic Acid	40.4 µg/L No EPA limit set worst single sample: 42 µg/L	17/17	SYR4	2016–2019
TTHM	95.6 µg/L 119% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 118 µg/L	17/17	SYR4	2016–2019
Total Haloacetic Acids (HAA5)	98.2 µg/L 164% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 127 µg/L	17/17	SYR4	2016–2019
Trichloroacetic Acid	47.8 µg/L No EPA limit set worst single sample: 83 µg/L	17/17	SYR4	2016–2019
Monochloroacetic Acid	11 µg/L No EPA limit set	11/17	SYR4	2016–2019
Dibromoacetic Acid	0.5375 µg/L No EPA limit set worst single sample: 0.5700 µg/L	6/17	SYR4	2016–2019
Monobromoacetic Acid	0.9200 µg/L No EPA limit set	1/17	SYR4	2016–2019

1 contaminants tested, none detected

Bromoform

Utility contact

Contact: MINNETI, ERIC
Phone: 406-594-7115
Email: [email protected]

Frequently asked questions about Ncmrwa Tiber Service Area

Is Ncmrwa Tiber Service Area tap water safe to drink?

EPA monitoring detected 10 contaminants in Ncmrwa Tiber Service Area'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 Ncmrwa Tiber Service Area's water?

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

How many people does Ncmrwa Tiber Service Area serve?

Ncmrwa Tiber Service Area reports serving 200 people in Montana, per its EPA record.

Has Ncmrwa Tiber Service Area had any water quality violations?

The EPA has 86 violations on file for Ncmrwa Tiber Service Area, of which 74 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.