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Tap water quality report

Helena North Koa

EPA monitoring tested this supplier for 2 contaminants and detected 2. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

2
contaminants tested
2
detected
50
people served
8
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Lewis and Clark

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.

8
health-based violations
274
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2004-10-01 → 2004-10-31
MCL Health-based Resolved 2004-10-01 → 2004-10-31
MCL Health-based Resolved 2004-10-01 → 2004-10-31
MCL Health-based Resolved 2004-10-01 → 2004-10-31
MCL Health-based Resolved 2004-10-01 → 2004-10-31
MCL Health-based Resolved 2004-10-01 → 2004-10-31
MCL Health-based Resolved 2004-10-01 → 2004-10-31
MCL Health-based Resolved 2004-10-01 → 2004-10-31
MR Monitoring Resolved 2020-12-08
MR Monitoring Resolved 2020-12-08

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
Nitrate-Nitrite
8830.5 µg/L 88%
of the EPA limit 10000 µg/L
worst single sample: 11900 µg/L
28/30 SYR4 2012–2019
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2025

Utility contact

Contact
NORBECK, AMBER
Phone
406-458-3725
Email
[email protected]

Frequently asked questions about Helena North Koa

Is Helena North Koa tap water safe to drink?

EPA monitoring detected 2 contaminants in Helena North Koa'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 Helena North Koa's water?

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

How many people does Helena North Koa serve?

Helena North Koa reports serving 50 people in Montana, per its EPA record.

Has Helena North Koa had any water quality violations?

The EPA has 274 violations on file for Helena North Koa, of which 8 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.