Water Quality Metrics T-test will be done to compare the microbial water quality as measured by the mean log10 MPN count/100 ml water during each monthly step between the MAR water and nearby pond water samples. The investigators will determine whether the concentration of each chemical constituent in water samples during each monthly step exceed the WHO recommended level. We will use similar GEE models as above for the outcomes of the log10 MPN count/100 ml water, and natural log-transformed (if skewed) concentration of each chemical constituent of water.