To evaluate temporal trends in bulk precipitation pH in Vermont. Ninety-four percent of all storm events result in a pH less than 5.6, the theoretical pH of unpolluted precipitation. The most extreme pH events, both high and low, occur with low volume events. Volume of precipitation is positively correlated to annual volume weighted pH. Only one site has shown significant seasonal differences, but overall, Vermont has shown no significant difference between summer and winter mean pHs. Sites on the east side of the Green Mountains seem to have higher summer pHs potentially due to the cleansing effect of moving from west to east over the mountains.
Precipitation tends to be more acidic when a storm originates from a south-westerly direction.
Overall, Vermont precipitation has seen no improvement in pH of over time. Consider your lifestyle. Make your home energy efficient. Energy Rated Homes of Vermont Carpool. Global Warming for suggestions on how to make your daily lifestyle earth friendly.