CITY REPORT MT

Charlo, MT: 3 Violations - Home Safety Score unavailable

1 ZIP code · 1 water system · Updated

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
1
ZIPs Linked to Systems with Violations
Zone 1
County Radon Potential (High)
$325K
Median Home Value

What You Should Know About Charlo Water

  • Your city's water systems recorded 3 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.002 mg/L.
  • Homes built before 1986: 62% - older plumbing may contain lead solder.
  • Health risk index (ZipCheckup composite of CDC data): 14.03.

Who Supplies Your Water in Charlo

Public water system records for Charlo, MT point to a single listed provider, drawn from 1 system in the federal data; its violation record appears below.

Overview

We track home safety data for 1 ZIP code in Charlo, Montana, covering 1 community water system serving approximately 1,453 people. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.

Water Sources

Charlo water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0020 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 1.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
E. coli Microbiological 2 1
Lead and Copper Rule Treatment Technique 2 1
Revised Total Coliform Rule Microbiological 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
59824 — 3 0 Round Butte Water Company

All ZIP Codes in Charlo

  • 59824 - 3 violations recorded for mapped water systems

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Health Outcomes in Charlo

12%
Asthma (US: 9.8%)
12.2%
Diabetes (US: 10.4%)
17.5%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 12% ↑
Diabetes 12.2% ↑
Mental Health 17.5% ↑

Vertical line = national average. ■ Above national · ■ Below national

Top Contaminants in Charlo Water

E. coli 2 violations
Microbiological
Gastrointestinal illness, potentially fatal
Lead and Copper Rule 2 violations
Treatment Technique
Developmental delays in children, kidney damage
Revised Total Coliform Rule 2 violations
Microbiological
Indicates possible bacterial contamination

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Housing & Infrastructure in Charlo

1971
Median Build Year
62%
Built Before 1986
29%
Built Before 1970
Copper
Likely Pipe Material

With 62% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

Viewed through the lens of construction era, Charlo has a median build year of 1971; houses completed ahead of 1986 can hold lead-bearing solder or fittings.

1971
Median Year Built
62%
Pre-1986 (lead solder era; lead paint banned 1978)
29%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (29%) 1970–1986 (33%) Post-1986 (38%)

Over half of homes in Charlo were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

Lead Exposure Risk for Children in Charlo

62%
Homes Built Before 1986
0.002
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Frequently Asked Questions

How many violations are on record for water systems serving Charlo?
EPA records list 3 EPA violations for Charlo water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Charlo water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Charlo is 0.002 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How many water systems serve Charlo?
Our records map 1 water system to 1 ZIP code in Charlo. The related population figure in our data is approximately 1,453 people; it is not a count of people served citywide.
Home → Cities → Montana → Charlo, MT

How to cite this page

APA ZipCheckup. (2026). Charlo, MT: 3 Violations - Home Safety Score unavailable. https://zipcheckup.com/cities/mt/charlo/
BibTeX
@misc{zipcheckup-cities-mt-charlo,
  author = {{ZipCheckup}},
  title  = {{Charlo, MT: 3 Violations - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/mt/charlo/}
}

Page version: October 2026.

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