Har Sinai Congregation is the oldest continuously Jewish Reform congregation in the United States. The congregation is located in Baltimore's Jones Falls watershed and signed IPC's Partner Congregation Pledge in 2019. They planted roughly 30 trees on their grounds in 2018 and installed a rain barrel enabling them to disconnect one of their roof downspouts. They have also hosted native plant sales, a Tu B'Shvat Seder and have participated in Adopt-a-Highway to remove trash. You can learn more about Har Sinai Congregation by clicking here.