Connecticut’s patchwork of private water systems continues to shrink with Bridgeport utility Aquarion Water Co. acquisition of another tiny water provider in the state’s western corner — its third Connecticut acquisition in five months.

Aquarion said Tuesday it coordinated with the state Public Utilities Regulatory Authority to purchase Meckauer Water Co., which serves 49 Bethel customers.

Price wasn’t disclosed.

Aquarion CEO Charles V. Firlotte said the Meckauer deal gives Aquarion full coverage of every town in Fairfield County.

In February, Aquarion bought United Water Connecticut Inc., serving more than 24,000 residents in the western towns of Bethel, Brookfield, Newtown, New Milford, and Woodbury.

In March, Aquarion Water Co. bought the Birchwood Water Association Inc., with some 275 residential customers in Marlborough.

All three deals raise to more than 610,000 people in 47 Connecticut cities and towns, plus service territories in Massachusetts and New Hampshire, who rely on Aquarion water service.

In 2011, Aquarion purchased and integrated more than 40 Connecticut water systems into its portfolio, which strengthened the company’s ability to deliver high quality water to communities throughout the state.

Connecticut Water Service Co. in Clinton is the state’s other large water utility.