Great Basin Water Kiona
EPA ID: WA5310724 · 520 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for Great Basin Water Kiona (WA5310724): 21 violations on record since 2021. Although 21 violations appeared on Great Basin Water Kiona's record, each is listed as resolved; the system serves about 520 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Great Basin Water Kiona Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Great Basin Water Kiona have a median household income of $102,445 and about 28,859 residents live in those ZIP codes (Census; not the number of people this system supplies).
Environmental Justice Note: On average, 31% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). 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?
Great Basin Water Kiona'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 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 6 detections recorded. 2 detections are above the level of a federal PFAS MCL (4 ppt for PFOA and PFOS), with compliance required from 2029.
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
Great Basin Water Kiona (EPA ID: WA5310724) is a community water system in Washington that serves approximately 520 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 21 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| September 1, 2023 | Revised Total Coliform Rule | Non-health-based | Resolved |
| January 1, 2021 | 1,2,4-Trichlorobenzene | Non-health-based | Resolved |
| January 1, 2021 | cis-1,2-Dichloroethylene | Non-health-based | Resolved |
| January 1, 2021 | DICHLOROMETHANE | Non-health-based | Resolved |
| January 1, 2021 | o-Dichlorobenzene | Non-health-based | Resolved |
| January 1, 2021 | p-Dichlorobenzene | Non-health-based | Resolved |
| January 1, 2021 | Vinyl chloride | Non-health-based | Resolved |
| January 1, 2021 | 1,1-Dichloroethylene | Non-health-based | Resolved |
| January 1, 2021 | trans-1,2-Dichloroethylene | Non-health-based | Resolved |
| January 1, 2021 | 1,2-Dichloroethane | Non-health-based | Resolved |
| January 1, 2021 | 1,1,1-Trichloroethane | Non-health-based | Resolved |
| January 1, 2021 | Carbon tetrachloride | Non-health-based | Resolved |
| January 1, 2021 | 1,2-Dichloropropane | Non-health-based | Resolved |
| January 1, 2021 | Trichloroethylene | Non-health-based | Resolved |
| January 1, 2021 | 1,1,2-Trichloroethane | Non-health-based | Resolved |
| January 1, 2021 | Tetrachloroethylene | Non-health-based | Resolved |
| January 1, 2021 | CHLOROBENZENE | Non-health-based | Resolved |
| January 1, 2021 | Benzene | Non-health-based | Resolved |
| January 1, 2021 | Toluene | Non-health-based | Resolved |
| January 1, 2021 | Ethylbenzene | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| 1,2,4-Trichlorobenzene | Monitoring & Reporting | 1 | No |
| cis-1,2-Dichloroethylene | Monitoring & Reporting | 1 | No |
| DICHLOROMETHANE | Monitoring & Reporting | 1 | No |
| o-Dichlorobenzene | Monitoring & Reporting | 1 | No |
| p-Dichlorobenzene | Monitoring & Reporting | 1 | No |
| Vinyl chloride | Monitoring & Reporting | 1 | No |
| 1,1-Dichloroethylene | Monitoring & Reporting | 1 | No |
| trans-1,2-Dichloroethylene | Monitoring & Reporting | 1 | No |
| 1,2-Dichloroethane | Monitoring & Reporting | 1 | No |
| 1,1,1-Trichloroethane | Monitoring & Reporting | 1 | No |
| Carbon tetrachloride | Monitoring & Reporting | 1 | No |
| 1,2-Dichloropropane | Monitoring & Reporting | 1 | No |
| Trichloroethylene | Monitoring & Reporting | 1 | No |
| 1,1,2-Trichloroethane | Monitoring & Reporting | 1 | No |
| Tetrachloroethylene | Monitoring & Reporting | 1 | No |
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 | 2025-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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 Great Basin Water Kiona (WA5310724) on EPA.gov.
Frequently Asked Questions
Is Great Basin Water Kiona water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Great Basin Water Kiona; its 21 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Great Basin Water Kiona serve?
Great Basin Water Kiona serves approximately 520 people across 2 ZIP codes in Washington.
Where does Great Basin Water Kiona get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Great Basin Water Kiona (WA): 21 EPA Violations. https://zipcheckup.com/water-system/wa5310724/
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author = {{ZipCheckup}},
title = {{Great Basin Water Kiona (WA): 21 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wa5310724/}
}
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Great Basin Water Kiona (EPA ID: WA5310724) - request the latest Consumer Confidence Report or ask about specific contaminants.