Commercial laboratory

National Testing Laboratories, Ltd.

Ypsilanti, MI · Washtenaw County

Homeowner samplesNot listed, call to confirm
Mail-in kitsNot listed, call to confirm
Walk-in drop offNot listed, call to confirm

Certification and services

State certified
Certification number
0055
Certified by
Michigan drinking water program
Certified for
Microbiological, Chemical
Lab type
Commercial
Last verified
September 29, 2026

Listed on the official state certified laboratory list.

Tests this lab is certified for

Arsenic
Coliform Bacteria
Full Homeowner Panel
Iron and Manganese
Lead
Nitrate / Nitrite
Pesticides
Uranium
Volatile Organic Compounds

How to submit a sample

  1. 1
    Call or check the website for the right bottles

    Bacteria samples need a sterile bottle from the lab. Chemistry samples usually take a clean container the lab supplies.

  2. 2
    Collect from a cold tap before treatment

    Skip softeners and filters. Remove the aerator, run the water 3 to 5 minutes, then fill without touching the inside of the cap.

  3. 3
    Keep it cold and deliver within 24 hours

    Bacteria samples are time-sensitive. Use a cooler with ice packs and hand it in or ship it the same day.

  4. 4
    Read the report against the standards

    Compare results with EPA drinking water limits. If anything is over, our problem pages explain what it means and how to treat it.

Certified by the Michigan Department of Environment, Great Lakes, and Energy (EGLE lab code 0055). Certified analytes: , E. Coli, Chlorite, Methomyl, Enumeration of E. Coli, Chloroform, Methoxychlor, Enumeration of TC, Chromium, Metolachlor, Heterotrophic Bacteria, Copper, Metribuzin, Total Coliform, Cyanide, Monobromoacetic acid, 2,4,5-TP (Silvex), Dalapon, Monochloroacetic acid, 2,4-D, Di(2-ethylhexyl)adipate, Nickel, 3-Hydroxycarbofuran, Di(2-ethylhexyl)phthalate, Nitrate, Alachlor, Dibromoacetic acid, Nitrate-Nitrite, Aldicarb, Dibromochloromethane, Nitrite, Aldicarb Sulfone, Dibromochloropropane (DBCP), Orthophosphate, Aldicarb Sulfoxide, Dicamba, Oxamyl, Aldrin, Dichloroacetic Acid, PCBs (screen only), Antimony, Dieldrin, Pentachlorophenol, Arsenic, Dinoseb, Picloram, Atrazine, Diquat, Potassium, Barium, Endothall, Propachlor, Benzo(a)pyrene, Endrin, Regulated VOCs, Beryllium, Ethylene dibromide (EDB), Selenium, Bromate, Fluoride, Simazine, Bromide, Glyphosate, Sodium, Bromodichloromethane, Halo Acetic Acids, Sulfate, Bromoform, Heptachlor, Thallium, Butachlor, Heptachlor Epoxide, Total Organic Carbon (TOC), Cadmium, Hexachlorobenzene, Total Trihalomethanes (TTHMs), Calcium, Hexachlorocyclopentadiene, Toxaphene, Carbaryl, Lead, Trichloroacetic Acid, Carbofuran, Lindane, Unregulated VOCs, Chlorate, Magnesium, Uranium, Chlordane, Manganese, Vinyl Chloride, Chloride, Mercury.

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