Seattle Public Utilities works hard to make the water in our system less corrosive to lead plumbing:
- They developed a corrosion optimization program in 2003.
- They continuously monitor water chemistry at their treatment facilities and collect routine samples throughout the distribution system to ensure it maintains water pH at a less-corrosive level.
- They monitor water quality indicators at 10 distribution system locations and report results monthly to the Washington Department of Health.
Lead & Copper Samples
Woodinville Water District (WWD) samples for lead and copper every three years to meet Environmental Protection Agency (EPA) and DOH requirements and report those findings in our annual Water Quality Report, published each June.