ESI Corporate Update

Victoria, British Columbia October 16, 2007 - ESI Environmental Sensors Inc. ("ESI", the "Company") TSX-V: ESV is pleased to provide a corporate update on the Company.

The recently completed financing which has generated in excess of $2.8M is now being utilized to facilitate an increasing demand in agricultural product orders and to finalize the development plans for new upgrades to the FloPoint. This plan will introduce a new mechanical version of Flo•Point which will include major electrical improvements to the Flo•Point. "These upgrades have been driven by a steady and increasing interest in this product line from both our distributor in the United Arab Emirates and other major oil companies in Canada and the Middle East" commented Blair Heffelfinger, ESI's President and CEO.

As well as continuing to develop and refine our product for this new and exciting region, the Company continues to work with the largest Canadian oil producer to develop a product that is specifically designed to meet their needs.

On the agricultural front, "ESI has made significant gains in the turf market and has added several new customers to the wine and cranberry industries," comments David Porter VP Marketing and Sales.

The Company is now compliant with all regulatory filings.

About ESI
ESI is a leading developer and manufacturer of patented and proprietary systems for industrial and environmental applications where understanding the presence and content of water is important. Major market sectors include: Agriculture, Golf and Turf, Scientific Research and Oil. ESI products have been successfully introduced into over 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 from producing oil wells for characterization and optimization. ESI differentiates itself by translating the best technology and science available into practical, easy to use solutions. Irrigation managers and scientists have adopted ESI's products for their accuracy, ease of use, repeatability, and ability to operate in challenging conditions. 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.

On behalf of the board,

Blair Heffelfinger, President & CEO
E.S.I. Environmental Sensors Inc.

For more information contact:

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

MEDIA CONTACT:
David Porter, Vice President of Marketing
Email: David.Porter@esica.com

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

Material Copyright 2007, E.S.I. Environmental Sensors Inc. Reproduction in whole or in part in any form or medium without express written permission of E.S.I. Environmental Sensors Inc is prohibited.

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