CITY REPORT WA HEALTH VIOLATIONS: 10

Lynden, WA: 10 Health Violations - Home Safety 92/100

1 ZIP code · 5 water systems · Updated

ZipCheckup grade for Lynden: A.

The model grade is high, but the records on this page include findings worth reviewing.

Your top priority: match a filter's certification to the violations (10 health-based violations). NSF certified filters →

Lynden, WA scores in the upper band of the ZipCheckup grade.

How Lynden Compares

Lynden92/100
Washington avg86/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
5
Water Systems
1
ZIPs Linked to Systems with Violations
A · 92
Avg Safety Score
Zone 3
County Radon Potential (Low)
$538K
Median Home Value
$600
Est. Remediation (0.1% of home value)

Lynden Water: The Quick Version

  • Your city's water systems recorded 15 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0056 mg/L.
  • Homes built before 1986: 40% - older plumbing may contain lead solder.
  • Estimated remediation: $600 per household.
  • Health risk index (ZipCheckup composite of CDC data): 10.84.

Water Systems Serving Lynden

More than one public water system is linked to Lynden, WA: federal records tie 5 systems to the area, and the 3 with the largest reported service populations are shown below. Which of them supplies a particular address depends on where the property sits, and a water bill or the utility can confirm it.

Overview

We track home safety data for 1 ZIP code in Lynden, Washington, covering 5 community water systems serving approximately 22,365 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. 10 health-based violations appear in the available health breakdown.

Home Safety Score

Average Home Safety Score for Lynden: A (92/100)

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

Lynden water systems draw from: Groundwater, Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0056 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 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
Nitrate Inorganic 18 1
Consumer Confidence Rule Reporting 6 1
Revised Total Coliform Rule Microbiological 2 1
Surface Water Treatment Rule Treatment Technique 2 1
Interim Enhanced Surface Water Treatment Rule Treatment Technique 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
98264 A 15 10 Lynden Water Department

All ZIP Codes in Lynden

  • 98264 [A] - 15 violations ⚠

Data Sources

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

CDC Health Data for Lynden

10.7%
Asthma (US: 9.8%)
8.8%
Diabetes (US: 10.4%)
17.9%
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 8.8% ↓
Mental Health 17.9% ↑

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

Key Contaminants Detected in Lynden

Nitrate 18 violations
Inorganic · EPA regulatory level for the contaminant named above: 10 mg/L
Blue baby syndrome in infants
Consumer Confidence Rule 6 violations
Reporting
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.

How Old Is Lynden's Housing Stock?

1997
Median Build Year
40%
Built Before 1986
18%
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

Buyers and renters in Lynden can ask a simple question of any home: was it built before 1986? The citywide median of 1997 will not answer it.

1997
Median Year Built
40%
Pre-1986 (lead solder era; lead paint banned 1978)
18%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (18%) 1970–1986 (22%) Post-1986 (60%)

Most homes in Lynden 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.

Lynden: Remediation Cost in Perspective

Relative to home values, Lynden remediation estimates run low.

Median Home Value
$538,100
Est. Remediation
$600
Remediation as % of home value 0.1%

Estimated remediation costs in Lynden can be compared with local home values. The $300–$1,500 estimated range can be set against the median property value; actual costs vary by home. Home values are 15% above the Washington average.

Protecting Children from Lead in Lynden

40%
Homes Built Before 1986
0.0056
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 Flood-Claim Evidence for Lynden

49
Total FEMA Flood Claims
$34,051
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Lynden contains 49 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $34,051. Among ZIP codes with claim records, 100% 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 $600 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 Lynden, WA

Frequently Asked Questions

What does the Home Safety Score mean for Lynden, WA?
Lynden has an average Home Safety Score of 92/100 (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. 15 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 Lynden?
EPA records list 15 EPA violations, including 10 health-based violations for Lynden water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Lynden water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Lynden is 0.0056 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 Lynden compare to Washington average?
Lynden has an average Home Safety Score of 92/100, which is at or above the Washington state average of 86/100 for the same model series.
How many water systems serve Lynden?
Our records map 5 water systems to 1 ZIP code in Lynden. The related population figure in our data is approximately 22,365 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Lynden?
Estimated remediation cost per household in Lynden: $600; modeled range $300 to $1,500. 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). Lynden, WA: 10 Health Violations - Home Safety 92/100. https://zipcheckup.com/cities/wa/lynden/
BibTeX 
@misc{zipcheckup-cities-wa-lynden,
  author = {{ZipCheckup}},
  title  = {{Lynden, WA: 10 Health Violations - Home Safety 92/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/wa/lynden/}
}

Page version: October 2026.

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