Please submit sites here only if they show details of laboratories in North America specializing in testing a broad range of samples from the environment, and testing for inorganic and organic parammeters.  Microbiological testing may also be including in this category if the aim is to assess environmental contamination or ecology studies.

If the laboratory only performs tests on water, and there is no accommodation for another matrix, such as air or soil samples, please submit to the most appropriate subcategory seen from Environment: Water Resources: Products and Services.

Since the majority of suggested sites have come from this continent, this category has been created to help users locate their nearest facility.  Many laboratories receive samples by post or courier, and provide a chain of custody (COC) form for potential legal cases.  Reporting of results can be by electronic means, so although the locality is included at the end of the description, users can judge from the site the most suitable for their needs.