Lead Service Line Inventory

Project Overview

The City of Corvallis recently completed a service line inventory project aimed at protecting water quality within the City’s drinking water system. The inventory project was completed in response to new requirements from the Environmental Protection Agency (EPA) that were implemented following their announcement on December 16, 2021 that they intended to strengthen the regulatory framework on lead in drinking water. The overarching goal of the new requirements is to proactively remove lead service lines and more equitably protect public health.

To comply with these new requirements, all public water systems in Oregon were required to conduct an inventory of service lines on both the public water system side and the private property side that connects to the water meter, and to submit the results to Oregon Heath Authority (OHA)–Drinking Water Services (DWS) by October 16, 2024.

The City’s inventory project relied on investigation methods approved by OHA to review all water service lines built before 1985. After January 1, 1985 all lead was banned as a building material in Oregon. The City confirmed there are no lead service lines in our water system and reported those results to OHA-DWS on October 15, 2024. The investigation methods included reviewing data from water meter service installation records, reviewing water main construction records, and conducting visual field inspections to determine the material type for all City and private property services that are connected to the water meter.