What type of water source requires more frequent sampling?

Sources with known contamination issues require more frequent sampling as a proactive measure to ensure public safety and to monitor the resolution of contamination concerns. Regular sampling allows for the detection of contaminants that may pose health risks, facilitating timely interventions. When a water source has a known issue, it is essential to assess the efficacy of treatment methods and to track any fluctuations in contamination levels over time.

In contrast, sources with minimal public use may not necessitate frequent sampling since there is lower exposure risk. Sources with high mineral content are often stable and may not change rapidly, thus requiring less frequent testing compared to those with contamination problems. Lastly, sources that are privately accessed might have less regulatory oversight, which can affect sampling frequency, but this doesn't inherently necessitate more frequent sampling unless other risk factors are present.