Weck Laboratory Inc.

At a glance

Price

not published on the state list: ask the lab for a quote

Turnaround

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

Homeowner samples

yes (Vermont list)

Lab facts

Listed by

Montana (Montana Department of Public Health and Human Services (DPHHS) - Laboratory Services, Water Laboratory Certification Program)

Address

14859 Clark Ave., Hacienda Heights, CA 91745 · Open in Google Maps

Phone

(626) 336-2139

Certificate

The Montana DPHHS Water Laboratory Certification Program - Certified Laboratories (version page as fetched 2026-11-15 (no date printed)) prints no certificate ID or expiry date for this lab.

Public / homeowner samples

Public samples: ask the lab

Not stated in the list.

Location note

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

Left blank on the list

The Montana list (version page as fetched 2026-11-15 (no date printed)) gives no website for this lab.

Tests on the state list

This list does not break certification down by analyte. Ask the lab which tests it is certified for; the groups as written on the list are below.

• 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*').

DPHHS lists this lab under: Radiologic only (Out-of-State Laboratories). The page names no analytes, certificate number or expiry date. DPHHS prints its "Out-of-State Laboratories - Radiologic Only" heading inside the "Chemistry Laboratories - Inorganic only" section; the lab is shown as radiologic only. "Radiologic only" names no analyte, so no uranium or radon certification is shown. Ask the lab.

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.

• Vermont · VT 4047 · PFAS · Public samples: yes (per state)
  Vermont Department of Health - Laboratories Certified for Drinking Water Analysis (September 28, 2026)
• Virginia · VA lab 460313 / EPA CA00211 · Nitrate, Arsenic, Lead, PFAS, Uranium, Manganese, VOCs, Other metals · Public samples: ask the lab
  Virginia DCLS - Drinking Water Certified Labs (analyte detail) (Current as of 8/1/2026)
• California · CA ELAP 1132 · Coliform / E. coli, Nitrate, Arsenic, Lead, PFAS, Uranium, 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 3/12/2026)
• Oklahoma · OK DEQ State ID 2304, certificate 2026-101 · Nitrate, Arsenic, Lead, VOCs, Other metals · Public samples: yes (per state)
  ODEQ Lab Facility Search - laboratories accredited by the DEQ Laboratory Accreditation Program (Matrix: Drinking Water) (Live database, searched 2026-11-02)
• Nevada · NV Lab ID CA00211 · Nitrate, Arsenic, Lead, PFAS, Uranium, Manganese, VOCs, Other metals · Public samples: ask the lab
  NDEP Laboratory Approval Status - Certified Lab List (public database, Matrix: Drinking Water) (Live database, searched 2026-11-15 ("accurate as of the date and time of the search"))
• Hawaii · no ID on list · Nitrate, Arsenic, Lead, PFAS, Uranium, Manganese, VOCs, Other metals · Public samples: ask the lab
  Hawaii DOH State Laboratories Division - Certified Chemistry & Radiochemistry Drinking Water Labs (August 12th, 2026)
• Arizona · AZ0860 · Coliform / E. coli, Nitrate, Arsenic, Lead, PFAS, Uranium, Manganese, VOCs, Other metals · Public samples: ask the lab
  ADHS Safe Drinking Water Commercial Lab List (List of Arizona Certified Commercial Drinking Water Laboratories) (current as of Saturday, November 7, 2026)
• Oregon · 4047 · Nitrate, Arsenic, Lead, PFAS, Uranium, Manganese, VOCs, 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))
• Idaho · CA00211 · Nitrate, Arsenic, Lead, PFAS, Uranium, VOCs, Other metals · Public samples: ask the lab
  Idaho DHW - Drinking Water Lab Certification (WebLink folder 2940): State of Idaho Drinking Water Certificates (Weck Laboratories Industry, CA Inorganics Certificate: 6/1/2026 - 5/31/2027; Weck Laboratories Industry, CA Organics Certificate: 6/1/2026 - 5/31/2027; Weck Laboratories Industry, CA PFAS Certificate: 6/1/2026 - 5/31/2027; Weck Laboratories Industry, CA Radiochemical Certificate: 6/1/2026 - 5/31/2027)

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 Montana 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).