Biogas Plant threatens Tipperary Town
Decision by County Council expected March 15th
Tipperary Town drinking water could get contaminated. Most of the drinking water for the town comes from wells on the Bansha road near the town. Any seepage from the digester could make its way into the aquifer that feed the wells.
The aquifer beneath Tipperary town, from which drinking water is extracted, may be vulnerable to contamination because it is recharged by groundwater that travels from many miles beyond the immediate local area. Unlike surface water sources, aquifers are part of complex underground systems where water slowly moves through layers of soil, sand, gravel, and rock. This means that pollutants introduced far from the town—such as agricultural chemicals, fertilisers, pesticides, or waste from industrial and domestic activities—can eventually seep into the groundwater and accumulate within the aquifer. The proposed site is on a karst landscape. This essentially means that any spillages of chemicals stored on site can readily reach the underlying aquifer.
Since groundwater movement is slow and difficult to monitor, contamination may go undetected for long periods, increasing the risk to public health. If harmful substances enter the aquifer, they can compromise the safety and quality of the drinking water supply, potentially exposing residents to dangerous chemicals or microorganisms. Furthermore, once an aquifer becomes contaminated, it is extremely difficult, expensive, and time-consuming to clean. Therefore, protecting the wider recharge area—not just the land directly above the aquifer—is essential to ensure a safe and reliable drinking water supply for the people of the town.