Local Trip, Groundwater Quality Monitoring Network (GWMN)

The Groundwater Quality Monitoring Network (GWMN) consists of 27 wells distributed over 26 counties. The Network is divided into four trips: Local, North, Northeast, and West. The Local Trip shown here has six wells, one per county. The wells in the Local Trip are in Adams (AD 146), Chester (CH 10), Cumberland (CU 2), Lebanon (LB 372), Northumberland (NU 579), and Union (UN 51) Counties. Samples are collected twice per year and typically analyzed for physical parameters (pH, conductance, temperature, etc.), major and minor ions (both metal and non-metal), and nutrients, organics (other than pesticides or PCBs), and radioactive consituents. Continuous water-level monitoring also occurs at select wells.