E.S.I. Environmental Sensors Inc.

E.S.I. Environmental Sensors Inc.

August 15, 2007 09:30 ET

ESI Lands Major GroPoint™ Order

VICTORIA, BRITISH COLUMBIA--(Marketwire - Aug. 15, 2007) - ESI Environmental Sensors Inc. ("ESI", the "Company") (TSX VENTURE:ESV) is pleased to announce it has received one of its largest orders in the company's history from a single authorized distributor in the Australian and New Zealand markets. Under the terms of the contract, ESI will supply close to $250,000.00 in GroPoint™ sensors to that agricultural market. More than half of that order is scheduled to be shipped in the next two months. GroPoint™ sensors will be used as an essential part of a "moisture based growing solution" that ensures efficient water use and optimizes crop production.

After evaluating a number of sensor alternatives, the distributor chose GroPoint™ for its unrivalled accuracy and proven ability to operate in challenging conditions and ESI for its ability to deliver reliably and consistently.

"We are extremely pleased to be a large part of a major project in efficient irrigation and crop optimization," said Blair Heffelfinger, ESI's President and CEO. "This large order for our GroPoint™ sensors is an example of the growing mainstream acceptance of soil moisture monitoring as a solution to global water shortages and time based irrigation practices," said Mr. Heffelfinger.

About ESI

ESI is a leading manufacturer of patented and proprietary solutions for environments where understanding the presence, movement, and/or amount of water are important. Major market sectors include: Agriculture, Golf and Turf, Scientific Research, Civil Engineering and Crude Oil. ESI solutions 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 FloPoint™ instrument has been introduced to the Oil industry to measure the volumetric presence of water pumped during crude oil extraction for characterization and optimization of the process. 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 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.

On behalf of the board,

Blair Heffelfinger, President & CEO

E.S.I. Environmental Sensors Inc.

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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