CITY REPORT WA

Deer Park, WA: PFAS Found in Water - Home Safety 36/100

1 ZIP code · 4 water systems · Updated

ZipCheckup grade for Deer Park: F.

Lowest grade in federal records; check your home directly.

Your top priority: see the breakdown below and consider a certified water filter. NSF certified filters →

Within Deer Park, WA, the grade lands in the lower tier; residents whose system has violations on record may want independent testing.

How Deer Park Compares

Deer Park36/100
Washington avg86/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
4
Water Systems
1
ZIPs Linked to Systems with Violations
F · 36
Avg Safety Score
Zone 1
County Radon Potential (High)
$367K
Median Home Value
$500
Est. Remediation (0.1% of home value)

What You Should Know About Deer Park Water

  • Your city's water systems recorded 43 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0016 mg/L.
  • Homes built before 1986: 48% - older plumbing may contain lead solder.
  • Estimated remediation: $500 per household.
  • Health risk index (ZipCheckup composite of CDC data): 12.04.

Who Supplies Your Water in Deer Park

When a city is linked to 4 water systems, as Deer Park, WA is in federal records, water in one neighborhood may come from a different system than in another. The 3 systems with the largest reported populations are shown below, and their compliance records are kept separately, so a violation logged for one does not describe the others.

Overview

We track home safety data for 1 ZIP code in Deer Park, Washington (population ~14,666), covering 4 community water systems serving approximately 40,167 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.

Home Safety Score

Average Home Safety Score for Deer Park: F (36/100)

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

Deer Park water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0016 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
Nitrate Inorganic 6 1
Endrin Organic 2 1
BHC-gamma (Lindane) Organic 2 1
Methoxychlor Organic 2 1
Toxaphene Organic 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
99006 F 43 0 City of Deer Park

All ZIP Codes in Deer Park

  • 99006 [F] - 43 violations

Data Sources

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

Health Outcomes in Deer Park

11.5%
Asthma (US: 9.8%)
10.2%
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 11.5% ↑
Diabetes 10.2% ↓
Mental Health 17.5% ↑

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

Top Contaminants in Deer Park Water

Nitrate 6 violations
Inorganic · EPA regulatory level for the contaminant named above: 10 mg/L
Blue baby syndrome in infants
Endrin 2 violations
Organic
BHC-gamma (Lindane) 2 violations
Organic

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

Housing & Infrastructure in Deer Park

1983
Median Build Year
48%
Built Before 1986
17%
Built Before 1970
Copper
Likely Pipe Material

With 48% 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

Homes on the same street in Deer Park can differ: one may keep original pre-1986 plumbing while another has been replumbed, so the 1983 median is only a starting point.

1983
Median Year Built
48%
Pre-1986 (lead solder era; lead paint banned 1978)
17%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (17%) 1970–1986 (31%) Post-1986 (52%)

Most homes in Deer Park 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.

Cost Context: What Remediation Means for Deer Park Homeowners

The remediation-to-value ratio for Deer Park sits at the bottom of the scale.

Median Home Value
$366,600
Est. Remediation
$500
Remediation as % of home value 0.1%

Estimated remediation costs in Deer Park 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 22% below the Washington average.

Lead Exposure Risk for Children in Deer Park

48%
Homes Built Before 1986
0.0016
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.

What You Can Do in Deer Park

  1. Test your water at home. City-level data shows averages - your tap may differ. Check the certification, price and turnaround time of any water test kit or lab service.
  2. Install a certified water filter. For Nitrate, listed in the water-quality records for Deer Park: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
  3. Check your home's plumbing. With 48% of homes built before 1986, lead solder is a real possibility.
  4. Review your water system's CCR. If you use a community water system, request its annual Consumer Confidence Report for system-level test results or find it online.

Deep Dive Reports

Detailed analysis for Deer Park, WA

Frequently Asked Questions

What does the Home Safety Score mean for Deer Park, WA?
Deer Park has an average Home Safety Score of 36/100 (Grade F) 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. 43 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 Deer Park?
EPA records list 43 EPA violations for Deer Park water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Deer Park water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Deer Park is 0.0016 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 Deer Park compare to Washington average?
Deer Park has an average Home Safety Score of 36/100, which is below the Washington state average of 86/100 for the same model series.
How many water systems serve Deer Park?
Our records map 4 water systems to 1 ZIP code in Deer Park. The related population figure in our data is approximately 14,666 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Deer Park?
Estimated remediation cost per household in Deer Park: $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). Deer Park, WA: PFAS Found in Water - Home Safety 36/100. https://zipcheckup.com/cities/wa/deer-park/
BibTeX 
@misc{zipcheckup-cities-wa-deer-park,
  author = {{ZipCheckup}},
  title  = {{Deer Park, WA: PFAS Found in Water - Home Safety 36/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/wa/deer-park/}
}

Page version: October 2026.

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