Which factor contributes to the risk of harmful bacteria in well water?

The risk of harmful bacteria in well water is significantly influenced by the frequency of testing conducted on the water. Infrequent testing means that any contamination or presence of harmful bacteria may go undetected for extended periods, putting consumers at risk for exposure to unsafe water. Regular testing is essential for identifying potential issues such as bacterial presence, which can arise from various sources, including nearby animal waste, failing septic systems, or surface water intrusion.

When tests are conducted regularly, it allows for timely detection of contamination and the implementation of corrective measures, thereby maintaining the water quality and safety for consumption. In contrast, infrequent testing can lead to a false sense of security regarding the water quality, as any potential contamination may persist without detection or intervention. Thus, the lack of regular testing is a significant contributor to the risk of harmful bacteria in well water.