About Us

Water Treatment Technologies, Inc. (WTT) is owned by Robin and Andrea “Andi” Pettyjohn. Robin has been working in the water treatment industry for over 50 years (Andi says that, like his father before him, if you cut him, he’ll bleed water).

It wasn’t long after Robin and Andi moved to Phoenix when Robin saw a great need for quality service. They started WTT in January of 1992 concentrating on the service side of the business first. Their business has been a success in large part because of their efforts to bring the small town attitude of personalized service, hard work and ethical business practices to the big city.