The City of Tigard serves over 21,000 individual connections in Tigard, Durham, King City, and unincorporated Washington County, and maintains almost 300 miles of water distribution mains throughout the Tigard Water Service Area. Connecting these water mains to individual customers is the water service line. A service line is defined as the pipe(s), fittings, and meter located between the water main and a customer’s building inlet.

In the Tigard Water Service area, the segment of service line between the water main and water meter is owned and maintained by the City of Tigard, and the segment of service line between the water meter and building entrance is owned and maintained by the customer as shown in the below diagram. Water service lines can be made of different materials, including plastic, galvanized steel, copper, or lead.

The City of Tigard manages an ongoing Water Service Line Inventory project throughout the Tigard Water Service Area as part of a proactive effort to confirm that there are no lead materials in use in our water system. This project meets new federal requirements set forth in the  US Environmental Protection Agency Lead and Copper Rule Revisions to identify service line materials in water systems by October 2024. Identifying lead service lines and replacing them, if found, is important to protecting public health.

To create this inventory, the City of Tigard Water Department used the following resources and methods to determine that all service lines within the Tigard Water Service Area are non-lead:

• Tigard Water Department service line material records;
• Oregon state law and plumbing code that do not allow lead as a pipe material;
• Oregon Health Authority determination that service lines with a diameter of two inches or greater are non-lead; and
• Physical inspection of a random selection of service lines within the Tigard Water Service Area that had an unknown pipe material, statistically demonstrating that there are no lead service lines in the Tigard Water Service Area.

Since the probability of finding lead service lines was already very low because of regional construction practices and prior lead bans, Tigard’s approach was designed to be cost-effective and efficient with minimal impact on customers. Tigard has completed its water service line inventory and has confirmed that there are no lead service lines within the Tigard Water Service Area.

• If you are interested in what your service line material is, please enter your address in our interactive map to view the Tigard Water Service Area service line inventory.
• Alternatively, you can download the Tigard Water Service Line Inventory in its entirety.

Additionally, our drinking water throughout the Tigard Water Service Area is tested for over 200 different contaminants every year. Water distributed to Tigard Water Service Area customers meets or exceeds all water quality standards, including those for lead. If you would like to know more about drinking water quality, check out our most recent annual water quality report.

While there are no known lead components in Tigard’s public water system, some homes in the Tigard Water Service Area are known to have lead components as part of their indoor plumbing. These lead components are most likely to be found in homes was built between 1970 and 1985. The most common sources of lead in interior plumbing for these homes are lead solder used to join copper pipes (banned in 1985), faucets made from leaded brass, or galvanized plumbing that was once exposed to a source of lead. If your indoor plumbing has any of these characteristics and you are concerned about lead exposure, please click here for instructions on how to reduce your lead exposure. If you would like a free lead-in-water testing kit, please contact Tigard Public Works at 503-718-2591.