Between 2006 and 2009, for instance, Chilson Beach at Beaver Pond in Franklin was closed 12 times for E. coli - the most of all MetroWest and Milford-area beaches during that time.
Since those closings, a Franklin Parks and Recreation Department staff person said the town had not taken any extra precautions other than continuing to test for the substance.
Condon sympathized with town officials.
"You can't really control mother nature," she said.
Read more: http://www.milforddailynews.com/archive/x1648848389/Beaches-need-to-be-clean-to-allow-swimming#ixzz1PWjHy7cH
Related post about Well #9
Note: related to the Chilson Beach results, Franklin's drinking water comes from wells around town. Nature will normally produce E.coli (where do the animals go?).