City of Wilsonville General News

Posted on: June 3, 2016

Tests Show Safe Drinking Water for Wilsonville

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Tests of City drinking water consistently show results substantially below levels of concern that are in full compliance with federal and state drinking-water standards for lead and other contaminants set by the U.S. Environmental Protection Agency (EPA) and the Oregon Health Authority.

Recent public attention has been focused on issues of concern over domestic water supplies containing high levels of lead that exceed health standards. A primary objective of the City of Wilsonville is to provide residents and businesses with high-quality, clean and safe drinking water. Tests of treated water produced by the Wilsonville water-treatment plant consistently show results substantially below federal action limits for lead, copper and other regulated contaminants.

Water samples tested from older, potentially higher-risk homes in Wilsonville found that no corrective action is necessary and that none of the water tested exceeds federal action limits.

During the most recent testing conducted by an independent third-party laboratory in August 2015, water samples from 33 older homes indicated that none had tap water above the federal action levels. Four of the homes had very low levels of lead at 0.002 micrograms per liter, which is nearly 10 times lower than the EPA Action Limit (AL) of 0.015 micrograms per liter. Every three years the City of Wilsonville conducts lead and copper tests on tap water from a sample of older homes as required by EPA.

The sample of homes tested includes older homes that were built before 1986 when plumbing systems were more likely to be constructed using lead solder and/or lead fittings. Homes built after 1986 when the Safe Drinking Water Act was adopted use only “lead-free” solder and fittings and therefore are not a source of lead contamination.

The water-test results also indicate that the City’s corrosion control measures used at the water-treatment plant are effectively limiting the amount of lead that is leaching into a home’s tap water — even in older homes with plumbing systems that use lead solder and fittings.

Public Works Director Delora Kerber states, “The City of Wilsonville is confident and fully committed to delivering high-quality drinking water to Wilsonville’s consumers and remains dedicated to using proper water-treatment techniques and regular, ongoing testing for all types of regulated contaminants.”

More information about lead in drinking water can be found at http://www.epa.gov/safewater/lead. Copies of Wilsonville’s “2016 Annual Water Quality Report” are also available at City Hall and the Library, or online http://www.ci.wilsonville.or.us/WaterQualityReport. Paper copies of the report are available at City Hall and the Public Library and upon request.

Read the 2016 Water Quality Report.
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