City pilots real-time E. coli sensors as targeted human-source testing continues
Boulder staff reported targeted sampling and microbial source tracking for Boulder Creek's E. coli TMDL and a University of Colorado pilot testing near-real-time E. coli sensors that could power a public dashboard for recreation safety if validated.
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Kevin Grenell, stormwater quality manager, described the city's updated E. coli TMDL implementation plan and ongoing targeted field sampling to identify controllable human sources. He said the city is using pipe condition assessments and microbial source tracking to look for sanitary leaks and has identified a potential human marker in one University Hill area that staff are following up on.
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