CITY REPORT WA

Mount Vernon, WA: 5 Violations - Home Safety 98/100

2 ZIP codes · 4 water systems · Updated

ZipCheckup grade for Mount Vernon: A.

Checked records flag no major concern; missing data is unknown.

In the dataset behind this page, Mount Vernon, WA receives one of the two highest grades; read the compliance history system by system for details.

How Mount Vernon Compares

Mount Vernon98/100
Washington avg86/100
National avg73/100

Data: EPA SDWIS

2
ZIP Codes
4
Water Systems
2
ZIPs Linked to Systems with Violations
A · 98
Avg Safety Score
Zone 3
County Radon Potential (Low)
$492K
Median Home Value
$500
Est. Remediation (0.1% of home value)

What You Should Know About Mount Vernon Water

  • Your city's water systems recorded 5 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0027 mg/L.
  • Homes built before 1986: 53% - older plumbing may contain lead solder.
  • Estimated remediation: $500 per household.
  • Health risk index (ZipCheckup composite of CDC data): 12.43.

Who Supplies Your Water in Mount Vernon

Counting every public water system linked to Mount Vernon, WA in federal data gives 4. The list below keeps the 3 largest by reported population served, a figure that covers each system's whole service area rather than the city alone. A household's own supplier is named on its water bill.

Overview

We track home safety data for 2 ZIP codes in Mount Vernon, Washington (population ~49,325), covering 4 community water systems serving approximately 114,329 people region-wide. The EPA snapshots used for this build directly map water systems to 2 of 2 ZIP codes.

2 of 2 ZIP codes 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.

Home Safety Score

Average Home Safety Score for Mount Vernon: A (98/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor What It Measures
Water Quality EPA violations and compliance history
PFAS MCL Screen UCMR 5 testing against the covered federal MCLs
Radon Risk EPA radon zone classification
Annual AQI EPA AirData county-year median with at least 90 observed days

Water Sources

Mount Vernon water systems draw from: Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0027 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 2 ZIP codes with known status exceed the EPA lead action level

Radon Risk

2 of 2 ZIP records with known zones are in EPA Radon Zone 3.

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
Revised Total Coliform Rule Microbiological 6 1
Consumer Confidence Rule Reporting 3 2
Surface Water Treatment Rule Treatment Technique 3 2

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
98273 A 5 0 Skagit County Pud 1 Judy Res
98274 — 2 0 Skagit County Pud 1 Judy Res

All ZIP Codes in Mount Vernon

  • 98273 [A] - 5 violations
  • 98274 - 2 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 Mount Vernon

11%
Asthma (US: 9.8%)
10.8%
Diabetes (US: 10.4%)
15.8%
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 11% ↑
Diabetes 10.8% ↑
Mental Health 15.8% ↑

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

Top Contaminants in Mount Vernon Water

Revised Total Coliform Rule 6 violations
Microbiological
Indicates possible bacterial contamination
Consumer Confidence Rule 3 violations
Reporting
Surface Water Treatment Rule 3 violations
Treatment Technique
Pathogens may not be adequately removed

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

Housing & Infrastructure in Mount Vernon

1986
Median Build Year
53%
Built Before 1986
32%
Built Before 1970
Copper
Likely Pipe Material

With 53% 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

Plumbing risk in older housing is tied to the period before 1986, when lead pipes and lead solder were still permitted in new plumbing. Mount Vernon's median build year is 1986, and properties from before that year might still contain lead-bearing joints or pipes. Much of that risk sits inside individual properties, which city-level water quality averages don't capture.

1986
Median Year Built
53%
Pre-1986 (lead solder era; lead paint banned 1978)
32%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (32%) 1970–1986 (21%) Post-1986 (47%)

Over half of homes in Mount Vernon 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.

Cost Context: What Remediation Means for Mount Vernon Homeowners

Estimated remediation for Mount Vernon is a small fraction of median property value - one percent or less - though the ratio does not describe any single household.

Median Home Value
$492,400
Est. Remediation
$500
Remediation as % of home value 0.1%

Estimated remediation costs in Mount Vernon can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 5% above the Washington average.

Lead Exposure Risk for Children in Mount Vernon

53%
Homes Built Before 1986
0.0027
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.

Historical NFIP Claim Context in Mount Vernon

252
Total FEMA Flood Claims
$15,664
Avg Reported Sum With Payment Data
50%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Mount Vernon contains 252 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $15,664. Among ZIP codes with claim records, 50% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $500 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

Deep Dive Reports

Detailed analysis for Mount Vernon, WA

Frequently Asked Questions

What does the Home Safety Score mean for Mount Vernon, WA?
Mount Vernon has an average Home Safety Score of 98/100 (Grade A) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. 5 violations appear in EPA records for water systems mapped to these ZIP codes. Check individual ZIP code reports for component details.
How many violations are on record for water systems serving Mount Vernon?
EPA records list 5 EPA violations for Mount Vernon water systems. These water-system violations are shown for 2 mapped ZIP codes.
Does Mount Vernon water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Mount Vernon is 0.0027 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 does Mount Vernon compare to Washington average?
Mount Vernon has an average Home Safety Score of 98/100, which is at or above the Washington state average of 86/100 for the same model series.
How many water systems serve Mount Vernon?
Our records map 4 water systems to 2 ZIP codes in Mount Vernon. The related population figure in our data is approximately 49,325 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Mount Vernon?
Estimated remediation cost per household in Mount Vernon: $500; modeled range $300 to $800. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Mount Vernon, WA: 5 Violations - Home Safety 98/100. https://zipcheckup.com/cities/wa/mount-vernon/
BibTeX 
@misc{zipcheckup-cities-wa-mount-vernon,
  author = {{ZipCheckup}},
  title  = {{Mount Vernon, WA: 5 Violations - Home Safety 98/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/wa/mount-vernon/}
}

Page version: October 2026.

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