(Portland, OR) -- The Portland Water Bureau's efforts to reduce lead in drinking water appear to be working. The city's water lines don't contain lead, but some houses built between 1970 and 1985 might have lead in their home plumbing. The Water Bureau added a corrosion control treatment system in 2022 that increases the pH and alkalinity, reducing the chance lead will get into the water. Testing shows the water is now in full compliance with the EPA's Lead and Copper rule.