A Summit County company is winner of a five-year, $37.3 million contract from the U.S. Environmental Protection Agency.

EnviroScience Inc. in Stow has been tapped to be the prime contractor in the federal National Aquatic Resource Surveys program.

“The expertise of our biologists, lab specialists and fishery scientists makes us a natural fit for the EPA’s requirements of gauging the health of the nation’s waters,” said Martin A. Hilovsky, the company president. “It’s exciting to be selected for this contract.”

He said the firm expects to add eight employees to its staff of 50.

The federal program annually looks at water quality in more than 1,500 randomly selected lakes, rivers, streams, coastal waterways and wetlands around the country.

EnviroScience will ensure that the proper monitoring designs, indicators and methods allow the EPA to combine the information from across the country to effectively gauge water quality and to track trends over time.

The firm will be monitoring and assessing the condition of water by designing tests, gathering field samples, measuring lab results and reporting data.