CITY REPORT ID

Viola, ID: 23 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)
$480K
Median Home Value

Viola Water: The Quick Version

  • Your city's water systems recorded 23 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.004 mg/L.
  • Homes built before 1986: 38% - older plumbing may contain lead solder.
  • Health risk index (ZipCheckup composite of CDC data): 10.48.

Water Systems Serving Viola

Just one provider appears in the list below for Viola, ID, among 1 on the federal list. A listing shows which system is tied to the area, not which one serves a particular street; the water bill or the utility itself confirms that for a given address.

Overview

We track home safety data for 1 ZIP code in Viola, Idaho (population ~893), covering 1 community water system serving approximately 26,000 people region-wide. 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

Viola water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0040 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
1,2,4-Trichlorobenzene Organic 2 1
cis-1,2-Dichloroethylene Organic 2 1
Haloacetic Acids (HAA5) Disinfection Byproducts 2 1
Total Trihalomethanes (TTHM) Disinfection Byproducts 2 1
Xylenes, Total Organic 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
83872 — 23 0 Moscow Water Department

All ZIP Codes in Viola

  • 83872 - 23 violations recorded for mapped water systems

Data Sources

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

CDC Health Data for Viola

10.7%
Asthma (US: 9.8%)
7.8%
Diabetes (US: 10.4%)
17.2%
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 10.7% ↑
Diabetes 7.8% ↓
Mental Health 17.2% ↑

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

Key Contaminants Detected in Viola

1,2,4-Trichlorobenzene 2 violations
Organic
cis-1,2-Dichloroethylene 2 violations
Organic
Haloacetic Acids (HAA5) 2 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.06 mg/L
Increased cancer risk with long-term exposure above the MCL

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

How Old Is Viola's Housing Stock?

1994
Median Build Year
38%
Built Before 1986
10%
Built Before 1970
Copper
Likely Pipe Material

Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.

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

Housing Age Profile

Over the decades, Viola accumulated housing from multiple construction periods. The median build year of 1994 can be read against 1986, when lead solder in plumbing became federally prohibited - a regulatory line, not a safety line, and individual homes on either side of it can have different plumbing.

1994
Median Year Built
38%
Pre-1986 (lead solder era; lead paint banned 1978)
10%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (10%) 1970–1986 (28%) Post-1986 (62%)

Most homes in Viola were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

Protecting Children from Lead in Viola

38%
Homes Built Before 1986
0.004
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 Viola?
EPA records list 23 EPA violations for Viola water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Viola water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Viola is 0.004 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 Viola?
Our records map 1 water system to 1 ZIP code in Viola. The related population figure in our data is approximately 893 people; it is not a count of people served citywide.
Home → Cities → Idaho → Viola, ID

How to cite this page

APA ZipCheckup. (2026). Viola, ID: 23 Violations - Home Safety Score unavailable. https://zipcheckup.com/cities/id/viola/
BibTeX
@misc{zipcheckup-cities-id-viola,
  author = {{ZipCheckup}},
  title  = {{Viola, ID: 23 Violations - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/id/viola/}
}

Page version: October 2026.

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