Lead and Copper Rule

In October of 2024, the City of Wilsonville completed the initial Lead Service Line Inventory in accordance with EPA’s revised Lead and Copper Rule. The 2021 Revised Lead and Copper Rule requires that all Oregon state public water systems develop a complete inventory of all service line materials, including both public and private segments. The City of Wilsonville is committed to complying with the EPA’s efforts to reduce exposure to lead through drinking water.

There are 2 segments of service lines: public and private.  The public segments are City-owned.  This portion of the line runs from the city water main to the meter box. Private service lines are the portion of the line that runs from the meter box to a building or residence. The City of Wilsonville has 7,454 service lines.

The Oregon Health Authority has concluded that service lines installed after 1985 are considered non-lead, since this is when the lead ban was enacted in Oregon. Per Oregon policy, if a water system has no current or historical records or knowledge of public lead service line use, a private galvanized line is classified as non-lead. 

Based on statistical guidance from Oregon Health Authority, the City of Wilsonville inspected 367 private drinking water service lines across the city to get a random, yet representative sample of service lines built prior to 1986. The City found zero lead service lines in these inspections. You can view a map of the 2024 test sites here. 
Statistically, remaining non-inspected service lines are likely made with a non-lead material, with a 95% confidence level. Lead is not introduced through the treatment processes City of Wilsonville uses to keep your drinking water safe. For additional information on the health effects of lead, please visit the Environmental Protection Agency’s website:  www.epa.gov/lead.