Marquez Mobile Home Park
EPA ID: WA5341640 · 120 people served · 1 ZIP code
Marquez Mobile Home Park earns a clean bill from EPA monitoring — no violations in five years across a service area of 120 people.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Marquez Mobile Home Park Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Marquez Mobile Home Park serves a community with a median household income of $60,167 and an estimated 24,048 residents across its service area. Approximately 70% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 56% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Marquez Mobile Home Park's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 1% of homes in Yakima County, Washington rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Washington
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Marquez Mobile Home Park (EPA ID: WA5341640) is a community water system in Washington that serves approximately 120 people from groundwater sources.
This system serves ZIP code 98944 in Sunnyside.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by WA or modeled from parcel and building-footprint data.
- 98944 — Sunnyside
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Marquez Mobile Home Park (WA5341640) on EPA.gov.
Frequently Asked Questions
Is Marquez Mobile Home Park water safe to drink?
Based on EPA records, Marquez Mobile Home Park has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Marquez Mobile Home Park serve?
Marquez Mobile Home Park serves approximately 120 people across 1 ZIP code in Washington.
Where does Marquez Mobile Home Park get its water?
The primary water source is groundwater.