Lake Waramaug was reopened Tuesday, July 29 to swimmers and for other recreational use.

The lake had been temporarily closed since Thursday, July 24 by the state Department of Energy and Environmental Protection (DEEP).

The lake, which is surrounded by the towns of Washington, Kent and Warren, was closed as the result of a routine water quality test.

The DEEP staff collects water samples from all bodies of water in the state to ensure swimming is safe. Tests are used by public health and environmental protection authorities to evaluate the potential for contamination in water bodies.

Tests Thursday and Friday revealed bacteria, the DEEP said, but not a disease-causing pathogen.

Re-tests this week showed better results, so the lake was re-opened Tuesday.