Canal liners can positively or negatively affect groundwater quality, depending on their design and use. By preventing water seepage, liners minimize the risk of contaminants in canal water leaching into the groundwater, helping protect its quality. This is particularly important in areas where canals carry water with pollutants or agricultural runoff.
However, if the liner material itself is not inert or degrades over time, it could potentially release harmful substances that may affect groundwater if leaks occur. Proper selection of high-quality, non-toxic liner materials and regular maintenance ensure that canal liners effectively protect groundwater quality
