Water Quality in Great Falls, MT (59465)

EPA violation data for public water systems serving ZIP code 59465.

No Health-Based Violations

None of the 8 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are3 monitoring/reporting violations (missed testing deadlines), all resolved.

Better than 43% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

39

Population

8

Water Systems

3

Violations (5yr)

0

Health-Based

Location

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Water Systems Serving This Area (8)

Great Falls City Of

Surface water 60,000 people served
0 violations
Lead tested: 8 ppb (limit: 15 ppb) ✓

Many Pines Campground

Groundwater 7,000 people served
0 violations

Aspen Campground

Groundwater 1,200 people served
0 violations

Showdown Ski Lift Inc

All resolved
Groundwater 448 people served
1 violation (5yr) · All resolved

Neihart Town Of

All resolved
Surface water 229 people served
2 violations (5yr) · All resolved
Lead tested: 7 ppb (limit: 15 ppb) ✓

Logging Creek

Groundwater 50 people served
0 violations

Kings Hill

Groundwater 50 people served
0 violations

District Ranger

Groundwater 40 people served
0 violations

Contaminants Found

Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

3 violations
All resolved

Lead & Copper Levels

Lead (Pb)

Approaching limit
8 ppb measured Action level: 15 ppb

Sampled: Jul 2025

How Does This Compare?

Great Falls (59465) has more violations than 43% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 3, most of which are monitoring/reporting issues.

Fewer violations 43th percentile More violations

Water Filter Recommendations

No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.

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