Tap WaterIndex

← Montana

Tap water quality report

Dry Redwater Regional Water Authority

EPA monitoring tested this supplier for 3 contaminants and detected 3. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

3
contaminants tested
3
detected
365
people served
10
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
GWP
Ownership
Local government
Counties served
McCone

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.

10
health-based violations
22
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2015-01-01 → 2015-01-31
MCL Health-based Resolved 2015-01-01 → 2015-01-31
MCL Health-based Resolved 2015-01-01 → 2015-01-31
MCL Health-based Resolved 2015-01-01 → 2015-01-31
MCL Health-based Resolved 2015-01-01 → 2015-01-31
MCL Health-based Resolved 2014-12-01 → 2014-12-31
MCL Health-based Resolved 2014-12-01 → 2014-12-31
MCL Health-based Resolved 2014-12-01 → 2014-12-31
MCL Health-based Resolved 2014-12-01 → 2014-12-31
MCL Health-based Resolved 2014-12-01 → 2014-12-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
361.8 µg/L 28%
of the EPA limit 1300 µg/L
worst single sample: 1490 µg/L
35/35 SYR4 2014–2018
Lead
23.9 µg/L 159%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 30 µg/L
23/35 SYR4 2014–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2024

Utility contact

Contact
DRY REDWATER REG WATER AUT
Phone
406-485-3792

Frequently asked questions about Dry Redwater Regional Water Authority

Is Dry Redwater Regional Water Authority tap water safe to drink?

EPA monitoring detected 3 contaminants in Dry Redwater Regional Water Authority'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 Dry Redwater Regional Water Authority's water?

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

How many people does Dry Redwater Regional Water Authority serve?

Dry Redwater Regional Water Authority reports serving 365 people in Montana, per its EPA record.

Has Dry Redwater Regional Water Authority had any water quality violations?

The EPA has 22 violations on file for Dry Redwater Regional Water Authority, of which 10 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.