The public water system serving Bangor, Clifton, Eddington, Hampden, Hermon, Orrington, Veazie, and surrounding parts of Penobscot County, Maine, reports no detections of 1,4-dioxane above the laboratory reporting level during EPA’s Unregulated Contaminant Monitoring Rule 3 (UCMR3) sampling from 2013 to 2015. This federal survey detected no measurements higher than 0.07 micrograms per liter (µg/L), equivalent to 0.07 parts per billion (ppb), for this chemical of interest. There are no health-based violations on record from this sampling or other compliance data for the Bangor Water District’s surface water supply.
If you observe low-level detection values reported to three decimal places
Measurements such as 0.07 µg/L for 1,4-dioxane are given with high numeric precision to reflect the sensitivity of laboratory instruments during the UCMR3 sampling campaign. These values do not indicate concentration variability or compliance thresholds but rather minimum quantifiable limits. Reporting at this scale means any detection at or above this limit is a confirmed measurement, not an exceedance of a health-based regulatory limit. The UCMR3 program does not set enforceable standards but gathers occurrence data to inform future regulatory decisions.
If you consider how landfill leachate, degreasing sites, and consumer products each contribute to these findings
1,4-Dioxane is a synthetic compound used primarily as a stabilizer in industrial solvents and can enter surface and groundwater from multiple sources. Landfill leachate may carry small amounts of this cyclic ether due to disposed household and industrial waste. Areas with historical degreasing operations or industrial solvent use also contribute to its presence in nearby water supplies. Additionally, consumer products such as detergents and cosmetics sometimes contain this solvent stabilizer, which can find its way into surface water via wastewater discharges. The public water system’s surface water source in this part of Penobscot County may receive trace contributions from these collective origins, reflected in the low-level detections observed over the monitoring period.
If you want to understand how public system records differ from private well testing
EPA’s system-wide sampling represents aggregated data from a community water supply, measuring the chemical's occurrence in the treated water distributed to the public at large. This establishes a general profile for the entire area served but does not reveal household-specific water quality. Private well water quality can vary widely due to local geology, depth, and contamination sources. Therefore, individual homes relying on private wells must conduct their own chemical analysis to determine if 1,4-dioxane or other constituents are present at concentrations of concern. Public system monitoring data provides useful context but cannot substitute for home-specific testing results.
If you observe multi-year or seasonal variations in 1,4-dioxane reports
The UCMR3 data from 2013 to early 2015 covers multiple sampling events showing consistent non-detect results above the 0.07 µg/L reporting threshold. This multi-year survey window helps to identify trends or spikes that might be missed in single tests. Seasonal changes in water source quality can occur due to variations in precipitation, industrial activity, and water treatment processes, but this regional data for the Bangor Water District indicates stable low presence or absence of measurable 1,4-dioxane during the monitored period. Later surveys or private testing can reveal any changes but should be compared carefully against UCMR3’s defined methodology and scope.
If 1,4-dioxane is left untreated in household water for years
This cyclic ether is known for its persistence in water and resistance to conventional treatment methods such as activated carbon or boiling. Prolonged consumption of water containing elevated levels of 1,4-dioxane has raised concerns historically because of its classification as a possible human carcinogen based on animal studies. However, there is no indication from the public water system record that levels in Penobscot County reach those of regulatory concern. If a homeowner’s own water test shows detectable levels, options exist to reduce 1,4-dioxane before use. Neglecting to address an identified presence can mean prolonged exposure, but only testing can confirm the need for action at a given residence.
For households weighing technical approaches, one documented option is the Pentair 1,4-Dioxane Filter, which ships ready to configure for point-of-entry water treatment, targeting this solvent stabilizer effectively. The choice between technologies should consider water test results specific to the home, treatment capabilities, and maintenance requirements.
It is important not to conclude from the Penobscot County public system data alone that all local water supplies are free of 1,4-dioxane, nor that any detection implies a safety concern without further home-specific testing. The regional record does not establish individual household conditions, which depend on private water source and plumbing. Confirming your own water’s quality is the essential first step to making an informed treatment decision.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2015-01-05. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Bangor Water District (ME0090110), ME: 4 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level
- ✓ 90-Day Money-BackNo restocking fees — return within 90 days.
- ✓ Manufacturer WarrantyGenuine Fleck · Pentair · VIQUA equipment.
- ✓ Free Expert SizingTalk to a specialist and buy the right system the first time.