This 1,200 acre park in Derry Township offers a wide variety or recreational opportunities year round. Keystone State Park was first opened to the public in 1945.

The boroughs within the limits of the Township are New Alexandria and Derry, as well as the City of Latrobe. The Township is bounded on the north by the Conemaugh River, which separates Westmoreland from Indiana County on the east by the Townships of Fairfield and Ligonier, the dividing line being the crest of Chestnut Ridge on the south by Unity and Salem Township, the natural boundary line being the Loyalhanna Creek and on the northwest by the Township of Loyalhanna. It was cut down by the formation of Indiana County and by the formation of Loyalhanna Township on the Westmoreland side. It was, therefore, much larger originally than at the present time. The original boundaries as they were in 1775 began at Loyalhanna and ran thence to the Conemaugh River and down the river to the Kiskiminetas, and thence by the Loyalhanna to the beginning. It was established and organized by the Court of Quarter Sessions at the April term of court at Hannastown in 1775. 654 million gallons per day (MGD) and a maximum capacity of 1.6 MGD and wastewater collection system.One of the largest and most important townships in Westmoreland County is the Township of Derry. The system consists of a wastewater treatment plant which has an average design capacity of. In January 2011, the Authority purchased the Derry Borough sewer system from Derry Borough. The current production is an average of 600,000 gallons per day. The water treatment plant processes the water from Ethel Springs Lake under Permit No. The water is then piped to Ethel Springs Lake. The water system consists of a 1.25 MGD water treatment plant which treats surface water collected in the Upper and Lower McGee Run water dams located on Derry Ridge.

In 1952, the Authority purchased the water system serving the Borough of Derry and adjacent areas of Derry Township, from the Municipal Authority of Westmoreland County.

In addition, the Authority provides wastewater services to 1,150 customers within the Borough of Derry. The Authority currently provides water service to approximately 2,500 customers in Derry Borough and Derry Township. Welcome to the official web site for the Municipal Authority of the Borough of Derry in Derry, Pennsylvania.

Derry township, pa