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Weck Laboratories, Inc.

City of Industry, CA · Public samples: yes (per state)

At a glance

What it is certified to test: 8 of the 9 common well tests on the CA list (see which)
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 (California list)

Lab facts

Listed by: California (California State Water Resources Control Board - Environmental Laboratory Accreditation Program (ELAP))
Address: 14859 East Clark Avenue, City of Industry, CA 91745 · Open in Google Maps
Phone: (626) 336-2139
Public / homeowner samples: Public samples: yes (per state)
CA ELAP lab type 'Commercial': accepts commercial samples per state list (broader than homeowner); call first
Left blank on the list: The California list (version Map layer fetched 2026-11-15; scope PDF as of 3/12/2026) gives no website for this lab.

Certification record

Certificate ID: CA ELAP 1132
Issued by: California State Water Resources Control Board - Environmental Laboratory Accreditation Program (ELAP) (certification program)
Expiry on the list: 3/31/2028 · expires in about 16 months
List version: California ELAP - Accredited Laboratories (map layer) + per-lab Fields of Accreditation, version Map layer fetched 2026-11-15; scope PDF as of 3/12/2026
We fetched it: 15 Nov 2026 (file SHA-256 cbc97398a144…) · open the state file

Tests on the state list

8 of the 9 well-water tests we track are named for this lab on the California list (version Map layer fetched 2026-11-15; scope PDF as of 3/12/2026).
Contaminant	On this state list	Same lab, other state lists
Coliform / E. coli	Named on the official list	Arizona
Nitrate	Named on the official list	Arizona, Hawaii, Idaho, Nevada, Oklahoma, Oregon, Virginia
Arsenic	Named on the official list	Arizona, Hawaii, Idaho, Nevada, Oklahoma, Oregon, Virginia
Lead	Named on the official list	Arizona, Hawaii, Idaho, Nevada, Oklahoma, Oregon, Virginia
PFAS	Named on the official list	Arizona, Hawaii, Idaho, Nevada, Oregon, Vermont, Virginia
Uranium	Named on the official list	Arizona, Hawaii, Idaho, Nevada, Oregon, Virginia
Radon (water)	Not named on this list
Manganese	Named on the official list	Arizona, Hawaii, Nevada, Oregon, Virginia
VOCs	Named on the official list	Arizona, Hawaii, Idaho, Nevada, Oklahoma, Oregon, Virginia
Other metals	Named on the official list	Arizona, Hawaii, Idaho, Nevada, Oklahoma, Oregon, Virginia

Groups as written on the state list (219)

1,1,1,2-Tetrachloroethane
1,1,1-Trichloroethane
1,1,2,2-Tetrachloroethane
1,1,2-Trichloroethane
1,1-Dichloroethane
1,1-Dichloroethylene (1,1-Dichloroethene)
1,2,3-Trichlorobenzene
1,2,3-Trichloropropane (TCP)
1,2,4-Trichlorobenzene
1,2,4-Trimethylbenzene
1,2-Dibromo-3-chloropropane (DBCP)
1,2-Dibromoethane (EDB)
1,2-Dichlorobenzene
1,2-Dichloroethane (Ethylene Dichloride)
1,2-Dichloropropane
1,3,5-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,4-Dioxane
11Chloroeicosafluoro3 oxaundecane1sulfonic acid (11ClPF3OUdS)
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2FTS)
1H,1H, 2H, 2H-Perfluorohexane sulfonic acid (4:2FTS)
1H,1H, 2H, 2H-Perfluorooctane sulfonic acid (6:2FTS)
2,3,7,8Tetrachlorodibenzop-dioxin (TCDD) Screening Only
2,4,5-TP (Silvex)
2,4-D
2-Chlorotoluene
3-Hydroxycarbofuran
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
4,8Dioxa3H-perfluorononanoic acid (ADONA)
4-Chlorotoluene
9Chlorohexadecafluoro3 oxanonane1sulfonic acid (9ClPF3ONS)
Alachlor
Aldicarb (Temik)
Aldicarb Sulfone
Aldicarb Sulfoxide
Aldrin
Alkalinity
Aluminum
Antimony
… and 179 more

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*').

219 drinking-water analytes across 58 methods in ELAP Fields of Accreditation 101 Microbiology of Drinking Water, 102 Inorganic Chemistry of Drinking Water, 103 Toxic Chemical Elements of Drinking Water, 104 Volatile Organic Chemistry of Drinking Water, 105 Semi-volatile Organic Chemistry of Drinking Water, 106 Radionuclides in Drinking Water. Scope PDF: https://www.waterboards.ca.gov/drinking_water/certlic/labs/documents/elap_certs/687.pdf (as of 3/12/2026).

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.

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)
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)
Montana · no ID on list · analytes not broken down · Public samples: ask the lab
Montana DPHHS Water Laboratory Certification Program - Certified Laboratories (page as fetched 2026-11-15 (no date printed))
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 California 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).

Certified as ofMap layer fetched 2026-11-15; scope PDF as of 3/12/2026

California ELAP - Accredited Laboratories (map layer) + per-lab Fields of Accreditation. Fetched 2026-11-15 (UTC). File SHA-256 cbc97398a144…

Open the state lab-certification page (official list)