Nooksack Valley Water Association
EPA ID: WA5359850 · 1,343 people served · 3 ZIP codes
ZipCheckup's reading of EPA records for Nooksack Valley Water Association (WA5359850): no drinking-water violations recorded since 2021. Nooksack Valley Water Association has no EPA violations on record; the utility serves 1,343 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Nooksack Valley Water Association Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: A
Demographics of ZIP Codes Served
The ZIP codes associated with Nooksack Valley Water Association have a median household income of $85,781 and about 13,606 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 48% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Nooksack Valley Water Association's water is classified in EPA records as a groundwater source. 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.
Superfund Proximity Note: This service area ranks in the 70th 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
Nooksack Valley Water Association (EPA ID: WA5359850) is a community water system in Washington that serves approximately 1,343 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
ZIP-Area Home Safety Context: A (92/100)
This is the average Home Safety Score for 1 of 3 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | No | 2023-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
3 of 3 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.
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Nooksack Valley Water Association (WA5359850) on EPA.gov.
Frequently Asked Questions
Is Nooksack Valley Water Association water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Nooksack Valley Water Association in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Nooksack Valley Water Association serve?
Nooksack Valley Water Association serves approximately 1,343 people across 3 ZIP codes in Washington.
Where does Nooksack Valley Water Association get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Nooksack Valley Water Association Water Quality Report, WA. https://zipcheckup.com/water-system/wa5359850/
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author = {{ZipCheckup}},
title = {{Nooksack Valley Water Association Water Quality Report, WA}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wa5359850/}
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