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New Hampshire Department of Environmental Services Healthy Swimming Mapper shows problem areas in red. Learn more at tinyurl.com/msp4rtuf. (SCREENSHOT)

BARRINGTON —  Going into the Fourth of July holiday week with the weather seemingly cooperating for those who want to swim in state lakes and ponds, there is only one lake in the state currently on the New Hampshire cyanobacteria warning list as of Thursday: Swains Lake in Barrington.

It has been on the list since June 19, but re-testing showed bloom conditions on Swains Lake have significantly improved since last week, according to the July 2 retesting. Multiple samples from around the waterbody had no cyanobacteria present. However, one sample did exceed the recreational threshold of 70,000 cells/mL, so the warning will remain in place.

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