Government Records Show 1,4-Dioxane Is Measured but Not a Compliance Violation
Public water system records for Clarkstown’s supplier, United Water New York, indicate that 1,4-Dioxane has been detected in some system samples. Between 2014 and 2015, 12 out of 73 test results showed 1,4-Dioxane levels above the reporting threshold of 0.07 µg/L, with the highest recorded level at 0.5 µg/L. These findings come from federal monitoring surveys and do not represent legal limits or violations. The Environmental Protection Agency (EPA) has set a cancer risk reference concentration of 0.35 µg/L for 1,4-Dioxane to guide understanding of potential health risk but has not established a maximum contaminant level (MCL) for this compound in public water systems.
Regular Care Supports Consistent Performance of the Pentair System
For households finding their current equipment insufficient against 1,4-Dioxane, periodic maintenance of advanced filtration units like the Pentair 1,4-Dioxane Filter is key. This equipment ships ready to configure and is designed for straightforward upkeep schedules that help maintain its efficacy in reducing dissolved organic contaminants in water. While specific service intervals depend on household water usage and quality, users should follow the manufacturer's guidelines to ensure ongoing removal capability.
Untreated 1,4-Dioxane May Persist but Effects Vary Over Time
If 1,4-Dioxane is not addressed, its presence in water remains stable because this chemical does not easily degrade in conventional treatment. Long-term exposure to elevated concentrations, understood from toxicological studies, may present health considerations, but federal records for the water system report levels below established risk reference points in most samples. It is important to rely on accurate local testing to characterize any individual household’s water quality and potential exposure.
Recognizing What Water Conditions Are and Aren't Linked to 1,4-Dioxane
1,4-Dioxane is a synthetic industrial solvent that can be detected by specialized laboratory analysis. It is tasteless and odorless, so common household water characteristics such as taste, staining, or smell do not indicate its presence or absence. Symptoms like discoloration or unusual taste are caused by other constituents and do not reliably signal 1,4-Dioxane levels. Confirmed laboratory testing of water samples is necessary to evaluate this contaminant.
Plumbing Materials and System Age Do Not Affect 1,4-Dioxane Source Levels
The detected 1,4-Dioxane in the public water system results from the surface water source and treatment processes upstream, not from household plumbing or pipe materials. While older plumbing might contribute other issues, 1,4-Dioxane concentrations measured in system surveys reflect source water conditions managed by the water supplier. Individual household plumbing age or composition does not increase or reduce detected levels of this chemical.
The data presented here describe measured 1,4-Dioxane levels in the public water supply for Clarkstown, Rockland County, based on EPA monitoring from 2014 to 2015. For more information, the EPA’s Safe Drinking Water Information System (SDWIS) public records provide comprehensive details on water quality in this area.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2015-10-01. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for United Water New York (NY4303673), NY: 73 results across 1 listed contaminants, 12 detections above the reporting level; no federal MCL; EPA cancer risk reference concentration 0.35 ug/L
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