EMSL Analytical, Inc. - San Leandro

At a glance

What it is certified to test

0 of the 9 common well tests on the WA 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 (Washington list)

Lab facts

Listed by

Washington (Washington State Department of Ecology - Lab Accreditation Program (with WA DOH))

Address

464 McCormick St, San Leandro, CA 94577 · Open in Google Maps

County

Alameda

Phone

(510) 895-3675

Public / homeowner samples

Public samples: yes (per state)

WA Ecology Lab Search label 'Accepts Commercial/Public Samples' (broader than homeowner: confirm the lab takes household samples)

Location note

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

Left blank on the list

The Washington list (version Information current as of 11/13/2026) gives no website for this lab.

Certification record

Certificate ID

EPA CA01477 / WA DOH #169

Issued by

Washington State Department of Ecology - Lab Accreditation Program (with WA DOH) (certification program)

Expiry on the list

04/06/2027 · expires in 142 days

List version

WA Ecology - Environmental Laboratories Accredited for Drinking Water Analyses (with scopes), version Information current as of 11/13/2026

We fetched it

15 Nov 2026 (file SHA-256 e7c9dab549d5…) · 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*').

1 drinking-water analytes on the WA scope (General Chemistry).

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 1620 · Asbestos · 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 7/1/2026)

Nearest labs that take homeowner samples

9 other certified labs that take homeowner samples are within 25 miles of this lab. Distances are straight-line from the address on the state list (approx. = ZIP-code centre). “Takes homeowner samples” comes from a state list column or the lab’s own website, as named.

Price and turnaround as printed on each lab’s own website and checked by a second reader; – = not published or not read yet.

Around this lab: Alameda County, CA

• Private wells: about 8,315 people, 1% of Alameda County’s 1,638,215 residents (USGS, 2015); rank 42 of 58 counties in California by people on wells.

• EPA radon zone (indoor air): Zone 2: moderate potential (average indoor radon may be between 2 and 4 pCi/L). EPA says the zone map should not decide whether one home needs testing.
• Arsenic above 10 µg/L (USGS model): about 1,941 private-well users (95% range 1,453 to 2,583; 2010 base), rank 22 of 58 in the state. A screening estimate, not a measurement of any well.
• Older homes (Census ACS 2020–2024): 65% of 637,212 housing units were built before 1980, above the state share of 56%. Homes built before 1986 are more likely to have lead solder or fittings, so test tap water for lead there.
• PFAS in public water nearby (public supply, not your well): 12 public systems serving this county reported EPA UCMR 5 results; 2 had a PFOA or PFOS sample at or above 4.0 ng/L.

County figures describe where the lab is, not the lab. Sources: USGS 2015 water use and 2017 arsenic estimates, EPA radon zones, Census ACS table B25034 (2020–2024), EPA UCMR 5 (2023–2026); details and links on the sources page.

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 Washington 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).