Green water
algae. You need to check the paper for allowable ecoli levels before you go swimming. Chicago also has some of the most hateful bitter winter weather imaginable.
(
Artamnesia,
Sun 7 Sep 2003, 3:21,
archived)
see below.
and manchester has some of the most bitter hateful weather all year round.
(
PMGT -Bacon.,
Sun 7 Sep 2003, 3:24,
archived)