State-certified labTakes homeowner samples

Grants Pass Water Laboratory, Inc./The Water Lab

Grants Pass, OR · Josephine CountyCommercial laboratory

Call (541) 476-0733
WebsiteDirections
Certification
State certified
list checked September 30, 2026
Certificate
OR100033
Oregon program
Tests listed
5
Arsenic and more
Homeowner samples
Yes
Drop-off

About Grants Pass Water Laboratory, Inc./The Water Lab

Grants Pass Water Laboratory, Inc./The Water Lab is a commercial laboratory in Grants Pass, OR (Josephine County). It is on the Oregon drinking water program's list of certified laboratories (certificate OR100033), and we last checked the list on September 30, 2026.

The lab takes samples from homeowners.

Before you go: Accredited by the Oregon Environmental Laboratory Accreditation Program (ORELAP ID OR100033) for drinking water and flagged by ORELAP as accepting samples from the public. Accredited for: Microbiology, Inorganic chemistry, Metals (arsenic, coliform, copper, ecoli, fluoride, iron, lead, manganese, nitrate, sodium checked). Call for bottles, drop-off hours and pricing; most of these labs sell the real estate transaction panel (arsenic, nitrate, total coliform) required by Oregon's Domestic Well Testing Act.

This profile is built from the official state list of certified drinking water laboratories, checked on September 30, 2026. Well Water Insider does not rate or endorse labs. Run this lab? Claim the profile to add prices, turnaround times, hours and a description.

Certification and services

State certified
Certification number
OR100033
Certified by
Oregon drinking water program
Certified for
Microbiology, Inorganic chemistry, Metals
Lab type
Commercial
Last verified
September 30, 2026

Listed on the official state certified laboratory list.

How to test your water here

How this lab takes samples, based on its listing. Call to confirm hours, bottles and prices.

Homeowner samplesYou can collect and drop off your own sample
Mail-in kitsNot listed, call to confirm
Walk-in drop offNot listed, call to confirm

Published lab fees in Oregon: $20 to $40 for a bacteria test and $20 to $40 for nitrate. Oregon Health Authority estimates; arsenic runs $25 to $45. Prices at this lab may differ.

  1. 1

    Call for the right bottles

    Bacteria samples need a sterile bottle from the lab. Chemistry samples usually take a clean container the lab supplies.

  2. 2

    Collect from a cold tap before treatment

    Skip softeners and filters. Remove the aerator, run the water 3 to 5 minutes, then fill without touching the inside of the cap.

  3. 3

    Keep it cold and deliver within 24 hours

    Bacteria samples are time-sensitive. Use a cooler with ice packs and hand it in or ship it the same day.

  4. 4

    Read the report against the standards

    Compare results with EPA drinking water limits. If anything is over, our problem pages explain what it means and how to treat it.

Tests this lab is listed for

From the state certification list and the lab's own listing. Ask which ones it runs for homeowners.

Arsenic

Natural in some bedrock, with no taste or smell. The EPA limit is 0.010 mg/L. Learn more

Coliform Bacteria

Total coliform and E. coli. The test the CDC recommends every year for every private well. Learn more

Iron and Manganese

The cause of orange and black stains. EPA guidelines are 0.3 and 0.05 mg/L. Learn more

Lead

Usually from plumbing and older well parts. EPA says there is no safe level. Learn more

Nitrate / Nitrite

From fertilizer, manure and septic systems. The EPA limit is 10 mg/L as nitrogen. Learn more

Location

964 SE M Street, Grants Pass, OR 97526

Lab address

Questions about Grants Pass Water Laboratory, Inc./The Water Lab

Is Grants Pass Water Laboratory, Inc./The Water Lab state certified?

Yes. It is on the Oregon list of laboratories certified for drinking water testing, last checked September 30, 2026.

What can Grants Pass Water Laboratory, Inc./The Water Lab test well water for?

Its listing covers arsenic, coliform bacteria, iron and manganese, lead and nitrate / nitrite. Call to confirm prices and which tests it runs for private well owners.

Can I bring my own well water sample?

Yes, the listing says it takes homeowner samples. Get the right bottle from the lab first, especially for bacteria.

How do I contact Grants Pass Water Laboratory, Inc./The Water Lab?

Call (541) 476-0733 and visit the lab's website. The address is 964 SE M Street, Grants Pass, OR 97526.

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