Surveillance Laboratory

DEQ's Surveillance Laboratory protects public health and the environment by measuring the quality of water used by the public for drinking, recreational and/or other purpose.

This branch is responsible for implementing proper quality control practices in day-to-day tasks and that reported data are precise, accurate and valid.

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General Overview-

The Division of Environmental Quality Surveillance Laboratory was established by the Commonwealth of the Northern Mariana Islands to provide monitoring data required under the Safe Drinking Water Act (P.L. 93-253) and other ... more

Weekly Beach Closure Results-

Weekly beach closure results.Beach closures ... more

Capabilities and Certification-

Capabilities The DEQ laboratory tests several biological and chemical parameters in drinking, recreational, and other source waters. Biological parameters include: Total Coliforms, Escherichia Coli, Fecal Colif ... more

Sampling Information-

SAMPLING COLLECTIONS & RECEIVING The DEQ laboratory performs multiple collections of marine waters, drinking waters and other types of water samples. The DEQ laboratory also receives water samples collect ... more

Certified Water Laboratories-

There are currently 6 DEQ certified water laboratories.  See below for the contact information. 

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