CALTEST ANALYTICAL LABORATORY

At a glance

What it is certified to test

1 of the 9 common well tests on the OR list (see which)

Price

from $61 (Package #1 Total Coliform and E.Coli (Present/Absent)), as printed on the lab’s website, read 14 Nov 2026

Turnaround

“Package #1: 5-7 day turnaround time. Packages and individual analyses: Turnaround time: 3 weeks from the day of receipt” (lab’s website)

Homeowner samples

yes (Oregon list)

Lab facts

Listed by

Oregon (Oregon Health Authority (OHA) - Oregon State Public Health Laboratory, Oregon Environmental Laboratory Accreditation Program (ORELAP))

Address

1885 N. KELLY RD., NAPA, CA 94558 · Open in Google Maps

Phone

(707) 258-4000

Website

caltestlabs.com

Not on the state list: found and checked by us, 14 Nov 2026

Public / homeowner samples

Public samples: yes (per state)

ORELAP's lab search marks this lab as accepting public samples. OHA's guide to the search explains the filter as: "You can filter for laboratories accepting public samples (these laboratories can accept samples from anyone)." OHA's domestic well testing page sends well owners to its list of accredited labs.

Location note

Lab is in CA, certified by Oregon (often used as a mail-in lab).

Certification record

Certificate ID

4036

Issued by

Oregon Health Authority (OHA) - Oregon State Public Health Laboratory, Oregon Environmental Laboratory Accreditation Program (ORELAP) (certification program)

Expiry on the list

2/4/2027 · expires in 81 days

List version

ORELAP laboratory search (ODIE): accredited for the Drinking Water matrix, version search as fetched 2026-11-15 (live database, no list date)

We fetched it

15 Nov 2026 (file SHA-256 a4b0407bc4d3…) · open the state file

Tests on the state list

• Named on the official list The state list names this analyte (or a column for it) for this lab.
• Group-level certification Certified for a parent group (e.g. 'Inorganics') that includes this analyte. Confirm the specific test with the lab.
• Partial group certification The list marks the group as 'Partial'. Confirm this analyte with the lab.
• Subcontracted The lab sends this analyte to another accredited lab (MDH 'X*').

ORELAP Fields of Accreditation, certificate 4036 - 016 (issued 9/23/2026, list as of 9/23/2026): 68 drinking-water analytes accredited.

Also certified by other states

Same business (same street address and ZIP) on another state's official list. Each state certifies separately, so each listing keeps its own source.

• California · CA ELAP 1664 · Coliform / E. coli, Nitrate, Arsenic, Lead, Manganese, VOCs, Other metals · Public samples: yes (per state)
  California ELAP - Accredited Laboratories (map layer) + per-lab Fields of Accreditation (Map layer fetched 2026-11-15; scope PDF as of 8/11/2026)

Homeowner service and turnaround (lab’s own website)

• Takes homeowner samples: yes. The lab’s site says: “Home Owners Packages (non regulatory)” source
• Who collects: You collect the sample with the lab's bottles. source
• Turnaround (as printed): Package #1: 5-7 day turnaround time. Packages and individual analyses: Turnaround time: 3 weeks from the day of receipt source

From the lab’s own website, read 14 Nov 2026 and re-read by a second checker; next check due by 12 Feb 2027. Certification fields come from the state list only.

Prices the lab prints, compared

Before you send a sample

Call the lab to confirm it's currently certified for the exact test and method, that it accepts samples from homeowners, and how to collect and ship them. Bacteria samples have short holding times. Status can change between list updates. To check a status, contact the Oregon certification program.

Is this your lab?

Labs can ask for corrections through the agency that publishes their state list. Homeowner service, prices and turnaround above come only from the lab’s own website. To ask us to correct or remove this listing, write to us (how we handle listings).