CSO http://wesa.fm en Allegheny County Health Department Issues Combined Sewer Overflow Alert http://wesa.fm/post/allegheny-county-health-department-issues-combined-sewer-overflow-alert <p>The Allegheny County Health Department issued its second combined sewer overflow (CSO) alert of the season Thursday.</p><p>The advisories notify swimmers, boaters and other river-goers if the water has been contaminated by raw sewage after heavy rainfall clogs waste treatment facilities. The length of the advisories depends on the time it takes for the sewer systems to return to normal levels.</p><p>The CSO alerts do not prohibit recreational river activity, but advise the public to reduce water contact, especially those with weak immune systems or open cuts and sores.</p> Fri, 24 May 2013 17:22:59 +0000 Michael Lynch 10161 at http://wesa.fm