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We regret to inform you that Simpson branded gasoline powered products are currently unavailable for delivery to the State of California. However, our experienced Sales Team is here to assist you in finding suitable alternatives from our wide range of Water Cannon products. Please feel free to call us at 1-800-333-9274 for personalized assistance.

As the co-owner of an industrial cleaning and painting company, Jack Simpson created the first SIMPSON pressure washer in 1961. The new pressure washing technology gave Jack’s crew a clear advantage and they quickly became known for delivering higher quality work in a lot less time than their competition. Today, SIMPSON still leads the industry in quality, innovation, reliability, and performance –and with over 60 years of industry-leading experience built into each of our products, it is easy to see why backyard heroes and job site champions everywhere prefer the SIMPSON Advantage.

Driven by Performance™ for more than 50 years, SIMPSON continues to provide the advantage you need to get the job done right every time. We design, engineer and manufacture products that are reliable, durable, and built to perform every time you need them. Whether you are a DIYer or an industry pro, SIMPSON offers an enhanced experience with professional results guaranteed.

PROFESSIONAL MEMBER BASE: CETA has a membership base of over 200 entities from four different countries representing manufacturers, dealers, service providers, customers/end-users and associates. TOP INDUSTRY RATINGS: CETA only allows for products to operate within and no less than 90% of the product rating. This accounts for normal variances within the manufacturing process. PRECISE TESTING STANDARDS: CETA certified products are rated based on performance recorded using the same nozzle as opposed to utilizing skewed data from different nozzle sizes. CERTIFIED PERFORMANCE: The CETA standard provides the end-user with a pressure washer that is certified to perform as intended with any nozzle provided as OEM equipment.

Water Cannon delivers the Simpson Pressure Washer to your door - tax free and freight included, plus you can earn volume discounts when ordering online at or