Household 1,4-Dioxane Checklist for Barnstable Residents After Equipment Failure
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WSP Whole House 1,4-Dioxane Reduction System
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What to Write Down Before Seeking Treatment Advice
Note your water source type
Your household receives water from the Centerville Osterville Marstons Mills Water Department, which sources from groundwater.
Record the date your equipment stopped working
This helps identify if new concerns started recently or predate the failure.
Gather any recent water quality tests you’ve done
Private test results help clarify your home’s specific water beyond public system data.
List any 1,4-Dioxane-related symptoms or observations
While 1,4-Dioxane is not linked to immediate taste or odor changes, note any unusual water characteristics.
How Public Water System Records Differ from Private Well Testing
Public system data represent average conditions across many connections
The EPA’s sampling covers thousands of customers served by the Centerville Osterville Marstons Mills system, not individual homes.
Private testing measures water at your specific tap
This identifies what you actually receive at home, which can differ due to plumbing or localized variations.
Public records include detection reports, not safety verdicts
Detected levels of 1,4-Dioxane in the public system do not mean your water is unsafe or exceed any federal limit.
Public tests use federal occurrence surveys, not compliance monitoring for 1,4-Dioxane
This means the recorded concentrations support awareness but are not regulatory pass/fail results.
What the Measured Range Means Compared to Federal Guidance—and What It Does Not
The highest detected 1,4-Dioxane was 0.09 micrograms per liter
This is below the EPA’s cancer risk reference concentration of 0.35 micrograms per liter for 1,4-Dioxane.
There is no federal maximum contaminant level (MCL) for 1,4-Dioxane
Therefore, no measured level is a violation or breach of a legal standard in Barnstable’s system.
The presence of 1,4-Dioxane in public water requires awareness but not alarm
Detection means monitoring instruments found it; it is not a safety failure or contamination legally.
What a Certified Laboratory Test for 1,4-Dioxane Reports and How to Read It
Certified labs provide concentration in micrograms per liter (µg/L)
This numerical result shows your home's specific level at the tap.
Lab results may include detection limits
Results below those limits mean concentrations were too low for reliable measurement, not necessarily absent.
Interpret results in the context of EPA reference levels
Compare your test outcome with the EPA cancer risk reference concentration of 0.35 µg/L to understand relative magnitude.
Lab reports do not classify water as safe or unsafe
They provide objective data; interpretation requires considering regulatory standards and health advisories.
What 'Detected', 'Median', and 'Range' Mean in This Sampling Record
'Detected' means measured above the laboratory’s reporting level
Two of 29 samples from the public system were above 0.07 µg/L, with the highest at 0.09 µg/L.
'Median' is the middle value among detected measurements, here 0.082 µg/L
This summarizes central tendency without implying safety or health status.
'Range' describes the span from lowest to highest detected values
This helps show variability in 1,4-Dioxane levels sampled across the system.
Sampling covers multiple dates and locations within the public system
Findings represent the regional water source, not individual household water.
The EPA’s public water system record for Centerville Osterville Marstons Mills in Barnstable County includes multiple 1,4-Dioxane detections below any federal health limit and no health-based violations. For specific home water conditions after equipment failure, testing at a certified laboratory will provide accurate 1,4-Dioxane concentration data. For treatment, the Pentair 1,4-Dioxane Filter ships ready to configure and is designed to reduce this compound effectively in residential water. These public record findings and treatment options support informed decisions based on reliable regional water quality data. Source: EPA SDWIS public water system record for Centerville Osterville Marstons Mills Water Department, EPA Unregulated Contaminant Monitoring Rule, 2013-2015.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-12-22. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Centerville Osterville Marstons Mills WD (MA4020002), MA: 29 results across 1 listed contaminants, 2 detections above the reporting level; no federal MCL; EPA cancer risk reference concentration 0.35 ug/L