Hazen and Sawyer

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Hazen and Sawyer is an engineering firm that specializes in the design of water and wastewater treatment plants[1]. They were hired by the Rivanna Water and Sewer Authority to design improvements to reduce the amount of nitrogen and phosphorous released into the watershed[2].


Regional projects

The firm also recently[when?] provided the engineering and design work for a $27.7 million upgrade of the Culpeper Wastewater Treatment Plant[3].

Hazen and Sawyer were the consulting firm for the Rivanna Water and Sewer Authority when they were deciding how to best meet the EPA's new disinfection byproduct regulations. [4] They recommended the use of chloramines partially because of its low cost. [4]


  1. Home | Hazen and Sawyer. Web. 25 June 2010. <http://www.hazenandsawyer.com/>.
  2. "Digester Gas Usage Optimization: The Moores Creek WWTP | Projects | Hazen and Sawyer." Home | Hazen and Sawyer. Web. 25 June 2010. <http://www.hazenandsawyer.com/work/projects/LFG-moores-creek-wwtp/>.
  3. "Cleaner Wastewater | Culpeper Star-Exponent." Home | Culpeper Star-Exponent. Web. 25 June 2010. <http://www2.starexponent.com/cse/news/local/article/cleaner_wastewater/59698/>.
  4. 4.0 4.1 Web. Water authority and activists preparing for chloramines information session, Courtney Beale, Charlottesville Tomorrow, 18 June 2012, retrieved 20 June 2012.

External links

Official site