About city of yonkers - NY Power Authority

Large currently unfiltered systems include New york city City, Boston, San Francisco's Hetch Hetchy source with its watershed in Yosemite National Park, Seattle's Cedar River source (their Tolt source is now filtered), and Portland, Oregon's Bull Run source (although they just recently decided to filter and are moving ahead with design). Tacoma, Washington, just recently pick to filter its well-protected Green River source to increase capability and toughness.

The filtration avoidance requirements in the SWTR (and its subsequent improvements) consist of 11 separate criteria, all of which should be satisfied constantly. The watershed protection-related requirements have not altered substantively given that 1989, however treatment-related portions have actually been modified. The 11 criteria are1. Low levels of source water fecal germs; 2. Low levels of source water turbidity; 3.

Yonkers New York Waterworks

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Adequate inactivation of Giardia, Cryptosporidium, and viruses; 5. Redundant disinfection devices to make sure reliability; 6. Appropriate and constant disinfectant residual levels at the entry point; 7. Appropriate disinfection residual levels within the distribution system; 8.  Key Reference  with the disinfection byproducts guidelines; 9. Low levels of total coliform bacteria within the distribution system; 10. No proof of waterborne illness outbreaks; and11.

Yonkers, NY Water Quality Report

NEW YORK CITY DEP's FAD and related watershed protection programs are mostly regulated by the New york city State Department of Health (NYS DOH), which received delegated authority from EPA to execute the SDWA guidelines in September 2007. 1. Low Levels of Source Water Fecal Germs. Source water need to be tested prior to disinfection a minimum of 5 days weekly.