Water Testing Labs of Maryland (WTL of MD) has been doing water and wastewater analytical services for customers in the DMV region since 1975.

We were the first private laboratory certified by the Maryland State Health Department. We presently have four certified water testing laboratories throughout the region, three in Maryland and one in northern Virginia that service over 1000 water systems and over 100 wastewater systems.



Services Offered Include the Following:

  • Drinking Water Tests for Real Estate Transfers
  • City Water Drinking Water Testing
  • Well Water Drinking Water Testing
  • Community Water Supply Water Testing
  • School & Business Water Testing
  • Wastewater Plant Operations Water Testing
  • Marina Wasterwater Testing
  • Septic Surveys
  • Flow Tests
  • Termite Inspections
  • Water Testing Kits
  • Online Shopping

Water Testing Kits Available To Purchase Online – CLICK HERE

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Our labs perform thorough water quality tests of drinking water, city tap water or well water to identify any contaminants. We also do septic surveys and termite inspections for real estate transfers.

Our service area includes Maryland, Delaware, Washington DC, and Northern Virginia. Our operations division, Chesapeake Operations, operates over 30 water and wastewater plants throughout Maryland.

Through our water & wastewater operations division we offer operation and maintenance, regulatory monitoring and reporting, management, training and project consulting of water and wastewater treatment plants. For more details on this program or quantity discounts on water testing please call or email us today.


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Quick Work

"Thank you so much for all your help with the water testing for our house. Your quick work helped us to close on time. Thanks so much."


– Dominique & Mike



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