Skip to content
TapBuff
ZIP

Is Cornelius, OR tap water safe?

3 utilities serve Cornelius, by EPA’s records. Here is what EPA’s and CDC’s records show for each, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

1 of the 3 utilities serving Cornelius has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: West Laurel Acres Water Co.

City of Cornelius, which serves the most people here, has nothing above a health goal in EPA’s and CDC’s records. That data covers what its report lists, not everything.

A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Cornelius’s ZIP codes, from EPA’s estimates.

Water testing near Cornelius

A utility tests the water it sends out. A test of your own tap shows what your pipes add, and on a private well it is the only test there is. It takes a lab Oregon certifies.

The 3 labs Oregon certifies closest to Cornelius, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Alexin Analytical Laboratories, Inc.

    Tigard, OR · about 14 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts

    (503) 639-9311

  • Apex Laboratories, LLC

    Tigard, OR · about 14 miles

    Certified for lead and copper, metals

    (503) 718-2323

  • OMIC USA Inc.

    Portland, OR · about 16 miles

    (503) 223-1497

Oregon State University Extension Well Water Program: Nitrate screening of well water at many of its groundwater education events. The screening is free. Water Testing Guidance for Private Wells, OSU Well Water Program.

All 91 certified labs for Oregon

ZIP codes in Cornelius

Which ZIP codes are in Cornelius: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Oregon Environmental Laboratory Accreditation Program, drinking water labs, as listed in TNI LAMS; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near Cornelius

Other towns in Washington County with a page of their own.

What to do next