Tatham was retained by the Region of Durham to replace an unstable municipal production well, which had been posing a risk to the community’s water supply. Originally constructed as a test well, the well had become unsuitable for long-term use due to sand production, necessitating a reliable replacement.

The project involved drilling a new test hole, developing a well design based on detailed gradation analysis, and conducting a 24-hour pumping test at 600 L/min. Tatham managed each phase, including initial mobilization, coordinating with Durham Region staff, securing site locates, drilling, construction, and water quality testing. Compliance with environmental regulations was ensured through documentation for the Environmental Activity and Sector Registry (EASR), and rigorous water quality sampling, including tests for E. coli and Cryptosporidium.

To meet our client’s needs, our approach ensured comprehensive service in line with new Groundwater Under Direct Influence (GUDI) guidelines, which included a field testing program that met management guidelines set by the Durham Region lab.