Underwriters Laboratories Inc.

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Drinking Water Analytical Services

Online Resources

Please use the following online tools to help simplify the process of collecting and tracking your drinking water samples for lab analysis.

Schedule of Services

Click here to view detailed information on methods offered through our laboratory, including parameter lists, reporting limits, and collection and preservation requirements.

FastStatus

Click here to check the status of your orders.

Certifications

Our laboratory is certified in 48 states and Puerto Rico. Click here for more information.

Collection Instructions

Click here to download our General Sampling and Shipping Instructions (PDF).

Click here to download our Total Coliform and Nitrate Sampling and Shipping Instructions (PDF).

Chain of Custody

Click here to download our Chain of Custody Record (Microsoft Excel file).

The Chain of Custody can be printed as a blank document or filled out electronically and saved as a new file. Please note that the second page of this file is an example of a completed Chain of Custody Record.

Because signatures are required, please remember to print and sign the form in the "Relinquished By" field. Please include the signed form with your sample shipment.

Contact Us

For more information on UL's drinking water analytical services you may email us or call +1-800-332-4345. You may also wish to visit our FAQs.