The Crimson reports state tests on that dirty water show the cyanobacteria bloom that had spread from near the river's mouth all the way up to River Street has been dissipating: A test on Oct. 8 showed safe levels of the primordial organism, also known as blue-green algae, and Head of the Charles organizers are hoping for a second straight good reading in tests for which results will be released Thursday - just in time for the races this weekend.

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