Enthalpy Analytical, Orange, CA

At a glance

What it is certified to test

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

Price

no per-test price printed on the lab’s website when we read it (14 Nov 2026): ask for a quote

Turnaround

not stated on the state list or the lab’s website: ask when you order

Homeowner samples

yes (California list)

Lab facts

Listed by

Hawaii (Hawaii Department of Health (DOH) - State Laboratories Division, Drinking Water Certification Program; Safe Drinking Water Branch)

Address

931 West Barkley Avenue, Orange, CA 92868 · Open in Google Maps

Phone

(714) 771-6900

Website

www.onterris.com/contact-laboratory-services

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

Public / homeowner samples

Public samples: ask the lab

Not stated in the list.

Location note

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

Certification record

Issued by

Hawaii Department of Health (DOH) - State Laboratories Division, Drinking Water Certification Program; Safe Drinking Water Branch (certification program)

Expiry on the list

1/29/2027 · expires in 75 days

List version

Hawaii DOH State Laboratories Division - Certified Chemistry & Radiochemistry Drinking Water Labs, version August 12th, 2026

We fetched it

15 Nov 2026 (file SHA-256 8dbc48293a06…) · 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*').

DOH approves this lab for the drinking-water chemistry/radiochemistry analytes listed (1; Inorganic chemistry), each with the method DOH names. Effective date of certification: 3/19/2026.

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 1338 · Coliform / E. coli, Nitrate, Arsenic, Lead, Manganese, 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 11/1/2026)
• Oregon · 4038 · Coliform / E. coli, Nitrate, Arsenic, Lead, Manganese, Other metals · Public samples: yes (per state)
  ORELAP laboratory search (ODIE): accredited for the Drinking Water matrix (search as fetched 2026-11-15 (live database, no list date))

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 Hawaii 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).