ESI Corporate Update

Victoria, British Columbia August 20, 2010 E.S.I. Environmental Sensors Inc. (ESI), TSX-V: ESV is pleased to announce that the Company will hold its 2010 AGM on September 29, 2010.

The 2010 AGM will be held at the Union Club of Victoria, located at 805 Gordon Avenue in Victoria, BC at 2:00 pm Pacific Daylight Time on September 29, 2010. Matters on the Agenda include the election of directors, the appointment and remuneration of the Company's auditors, approval of the Company's stock option plan and approval of the potential creation of a new control person and/or change in control of the Company. The Company's Notice of Meeting, Information Circular, Financial Statements and MD&A are being mailed to shareholders on August 24, 2010 and will be posted on SEDAR at www.sedar.com. The date of record for the meeting is August 16, 2010.

The Company is also pleased to announce the addition of Mr. Ian S. Grant to its Board of Directors. Mr. Grant brings over 25 years of executive and entrepreneurial business and marketing experience to ESI. Mr. Grant has held the role of President and CEO of several public companies and is currently President and sole owner of a full service importer and distributor of hardware and automotive products throughout Canada. Mr. Grant has also gained extensive corporate experience in general management, marketing and organizational effectiveness through positions with Labatt Brewing Company, where he held the title, Director of Marketing, for the British Columbia region , Colgate Palmolive, and Foote Cone and Belding, responsible for the advertising program for General Mills. Mr. Grant is an honours graduate of the Ivey School of Business at the University of Western Ontario.

About ESI

ESI is a leading manufacturer of patented and proprietary solutions for managing the world's fresh water supply. Major market sectors include: Agriculture, Golf and Turf, Scientific Research, Civil Engineering and Crude Oil. ESI solutions have been successfully introduced into more than 40 countries to enable customers to optimize their operations by monitoring the presence and movement of water, managing irrigation systems, and monitoring the integrity of landfill covers. Most recently, the Flo·Point™ instrument has been introduced to the Oil industry to measure the volumetric presence of water pumped during crude oil extraction. This provides operators with the information needed to manage, refine and optimize production. ESI differentiates itself by translating the best technology and science available into practical, easy to use solutions. Irrigation managers, Reservoir Engineers, and Scientists have adopted ESI's products for their accuracy, ease of use, repeatability, and ability to operate in challenging environments. ESI is publicly traded on the TSX Venture Exchange under the symbol "ESV". Further information about ESI may be obtained through the Company's website at www.esisensors.com.

ESI ENVIRONMENTAL SENSORS INC.
2071C Malaview Avenue West
Sidney, BC V8L 5X6
Tel: 250.655.3211 or 1-800.799.6324
Email: investor.relations@esica.com

MEDIA CONTACT:
Ian Middleton, Director
Email: imiddleton@esica.com
Tel: 250.655.3211 or 1-800.799.6324
www.esisensors.com

THE TSX VENTURE EXCHANGE HAS NOT REVIEWED AND DOES NOT ACCEPT RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.

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