Skip to Main Content View Text-Only

The City of Portland, Oregon

Portland Water Bureau

From forest to faucet, we deliver the best drinking water in the world.

Customer Service: 503-823-7770

GENERAL INFORMATION: 503-823-7404

More Contact Info

Bull Run Corrosion Control Project

  • Corrosion Control Information and Updates Learn what's happening with the City's plan for corrosion control.

What matters most to you about your drinking water? Take this 5-minute survey.

Have a question?
Ask the experts at the Water Bureau by completing an online form.

The Lead and Copper Rule, published in 1991, regulates how drinking water systems manage lead and copper that may enter into drinking water from plumbing. It requires that large systems treat drinking water to make it less corrosive, which reduces the amount of lead and copper from household plumbing that dissolves into drinking water.

Since 1997, the Portland Water Bureau has had a compliance approach that includes treating the drinking water to reduce lead and copper, adding sodium hydroxide to increase the pH of the drinking water to make it less corrosive. This treatment has resulted in up to a 70 percent reduction in lead in water levels at customer taps.

Since the Lead and Copper Rule was enacted, science has shown there are no safe levels of lead exposure, as a result improvements in the treatment are underway to further reduce lead in drinking water levels at customer taps. These improvements are scheduled to be in place by April, 2022. In the meantime, interim actions will be taken to further protect public health as the bureau implements long-term corrosion control treatment.

Benefits of Increased Corrosion Control

  • Reduces the risk of lead at the tap. Studies have shown that additional treatment is the most effective means of further reducing lead in water from home and building plumbing.
  • Increase stability and consistency of the water quality. Corrosion control treatment can result in a more consistent and stable pH in the system.

Ask a Question

Submit a question about Bull Run filtration or corrosion control.

Reducing Lead Exposure

Learn more about corrosion control to reduce risk of lead exposure.

Take the Survey

We want to hear from you! Take a 5-minute survey to share your thoughts.

Project Schedule

Learn about major activities needed to plan, design, and construct the new corrosion control plant.