Why a Low-Level Detection Is Reported to Three Decimal Places and What Precision Means Here
EPA Measures 1,4-Dioxane in Micrograms per Liter (µg/L) to Capture Trace Levels
The Bend Water Department's monitoring under the EPA's Unregulated Contaminant Monitoring Rule (UCMR3) shows one detection above the reporting level at 0.17 µg/L, or parts per billion. Reporting to three decimal places helps distinguish very low concentrations but does not imply a health violation or safety concern by itself.
Detecting 1,4-Dioxane in Surface Water Reflects Sensitive Laboratory Methods
This cyclic ether, also called the solvent stabiliser, is tracked as part of a federal survey, indicating the presence of trace amounts in public surface water sources. Such precision in data supports informed decisions but does not by itself indicate contamination severity or treatment needs.
How Landfill Leachate, Degreasing Sites, and Consumer Products Each Contribute to the Record
Landfill Leachate Can Introduce 1,4-Dioxane to Water Supplies
Decomposition fluids from waste sites sometimes carry this solvent stabiliser into surface sources. Monitoring in Deschutes County includes this potential input in system-wide measurements.
Industrial Degreasing Activities Are a Known Source of Dioxane in Water
Facilities using degreasers may release trace amounts into nearby water bodies. Such regional activities influence the public water system's overall profile without pinpointing individual household water conditions.
Consumer Products Containing 1,4-Dioxane Also Affect Water Quality Trends
Everyday items like detergents may contribute low-level presence of this compound in surface water, tracked as part of the localized monitoring effort for the Bend Water Department service area.
How Reverse Osmosis Rejection Rates Are Stated and Why a Percentage Is Not a Guarantee
Reverse Osmosis Units May Advertise High dioxane Rejection Percentages
Percentages describe the theoretical fraction of 1,4-dioxane they can reduce under ideal conditions. Real household results vary with water chemistry, pressure, and membrane condition.
A Percentage Alone Does Not Assure Consistent Control of the Cyclic Ether
The solvent stabiliser’s small molecular size makes it challenging to filter. Household systems must consider specifics beyond rejection rates to evaluate treatment efficacy for dioxane.
The Household or Facility Symptoms That Do and Do Not Point to This Problem
Visible Symptoms Commonly Linked to Water Are Not Typical for 1,4-Dioxane
1,4-Dioxane is colorless and odorless, so staining or taste issues usually do not indicate its presence.
Health Symptoms Are Not Diagnostic Without Specific Laboratory Testing
Because the compound is detected at very low levels, any health-related concerns require consultation with health experts and confirmed lab results rather than assumptions based on symptoms or visual water quality alone.
What a Certified Laboratory Test for This Constituent Reports and How to Read It
Laboratories Measure 1,4-Dioxane Concentration in Micrograms per Liter (µg/L) or Parts per Billion (ppb)
A certified lab test gives a precise measurement unique to that household’s water, showing whether the solvent stabiliser is present and at what level compared to public system data.
Test Results Help Decide the Need and Type of Treatment
Only a local test reveals a household’s concentration, which guides selecting appropriate equipment such as the Autotrol 1,4-Dioxane Filter for managing detected levels effectively.
The Role of Plumbing Material and Age, Separate from the Source Water
Household Plumbing Does Not Influence 1,4-Dioxane Levels
The cyclic ether is introduced at the source water level; the age or material of pipes does not cause or alter its concentration.
Testing Should Isolate Source Water Conditions from Possible Plumbing Effects
Sampling taps can include plumbing impacts, so direct source water sampling is recommended to understand dioxane presence accurately.
These observations reflect measurements and records for the Bend Water Department’s public water system in Deschutes County, which serves over 77,000 people through surface water supply. For official information, refer to the EPA’s public water system data for OR4100100.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-10-20. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Bend Water Department (OR4100100), OR: 22 results across 1 listed contaminants, 1 detections above the reporting level; no federal MCL; EPA cancer risk reference concentration 0.35 ug/L