Lead and Your Drinking Water
The use of lead pipes was banned in the 1980s, yet 40 years later there are still over 9 million lead service lines delivering water across the United States. In 1991, EPA published a regulation to control lead and copper in drinking water. This regulation is known as the Lead and Copper Rule (LCR).
Lead and Copper Testing
Since the early nineties, MW&L has performed Lead and Copper testing on a sampling of high-risk residential homes, that were built between 1983-1985 (prior to the lead solder ban) and plumbed with copper pipes and lead solder. MW&L’s test results have consistently been below the EPA’s action level for both lead and copper. The test results in 2023 were:
| 2023 Lead & Copper Testing Results | MW&L | EPA Action Level |
|---|---|---|
| MW&L Lead Results | .0014 ppb | 15 ppb |
| MW&L Copper Results | .16 ppm | 1.3 ppm |
Revisions to the LCR were subsequently made in 2000 and 2004. In 2020, the EPA finalized the first major update to the LCR in nearly 30 years, which updated lead and copper sampling protocols and contaminant level goals for community water systems.
Among other changes, this update requires that community water systems develop a water service line inventory, which will identify lead service line materials in the water system. This inventory is part of the EPA’s broader plan to work with federal, state, and local governments to replace lead pipes to protect communities from exposure to lead in drinking water.
McMinnville Water & Light has completed the Water Service Line Inventory and confirmed there are no lead service lines in the water system. This achievement meets the October 16, 2024, deadline set by the U.S. Environmental Protection Agency (EPA), which required public water systems to document the materials that make up both public and private service lines. McMinnville Water & Light completed and submitted the inventory to the Oregon Health Authority (OHA) in October 2024.