Welcome to the East Valley Water District

Engineering and Operations Information

Completed Projects

Plant 28 Upgrade

The District replaced the original well at Plant 28 with a new 20-inch well in the early 1970’s. This new well was deeper, and its larger casing allowed it to produce considerably more water. However, the surrounding distribution system had a limited carrying capacity, so the District initially installed equipment to limit the well’s production to about 700 gallons per minute.

During the 1994 annual water quality-testing program, a contaminant known as tetrachloroethylene or perchloroethylene appeared in several wells in extremely low concentrations. Fortunately, the level detected was considerably below the maximum contaminant level (MCL), but it required close monitoring.

Plant 28 photo In 1995, the need for additional water prompted the District to update the well to increase production to 1000 gallons per minute. This, in turn, began stressing the old and corroded piping system, causing it to leak. Test results in early 1998 indicated the contaminant level was approaching the MCL and the well was turned off. While the well was off, the District installed a granular activated carbon system to treat the water. This allowed the well to be used again by late summer 1998. The installation of this system and related costs amounted to over $300,000. A well upgrade and water system enhancement program was also implemented. In early 1999, the District had a contractor replace nearly all of the pipes in the vicinity of Plant 28. The District also installed new well equipment to increase its capacity to 2000 gallons per minute. The enhanced system was returned to service in May 2000.

Plant 99

The District had some work done on its 500,000 gallon reservoir tank at Plant 99, which is located west of La Praix Avenue and north of 28th Street. A consultant inspected the tank and the District contracted with Pacific Titan to do the necessary repair work, bringing the facility up to current OSHA standards.

An additional access door and safety railing were installed, and an access ladder was brought up to code. The silicone-alkyd coating used on the outside of the tank has a glossy finish which is designed to repel UV rays, allowing it to last a good 20 years. The coating is a nice grouse-tan color, which blends nicely with the environment. The interior of the tank was also sandblasted and recoated. The entire cost of the project was $83,400.

Philip A. Disch Surface Water Treatment Plant

In late 2000, the District contracted with Chlortek, a division of Severn Trent Services, to install an on-site sodium hypochlorite (liquid chlorine) generation unit at its treatment plant, located north of Highland Avenue, just east of the Crosstown Freeway. The purpose of this work was to eliminate the use of gas chlorine at this facility. The new unit produces liquid chlorine with a concentration of .8% (household bleach has a concentration of 5%), which makes the facility safer for the operators and surrounding population. The work, costing $129,500 began October 10, 2000 and was completed on December 11, 2000.

Plant 125

Construction has finished on a new reservoir to replace a 50,000 gallon reservoir that is located south of Greenspot Road near the Santa Ana River in the City of Highland. The old reservoir was damaged due to corrosion and age, and the cost to repair it would have exceeded replacing it. Accordingly, the District removed the old reservoir and replaced it with a new reservoir of the same type. The cost of installing the new reservoir was just under $40,000.

Plant 147

Due to future construction of Metropolitan Water District’s Inland Feeder Pipeline Project, the District’s Plant 121 well has been replaced by a new well. The well was located west of the intersection of Abbey Way and Church Street. Design and construction costs are being paid for by Metropolitan Water District. The new well at Plant 147 is located at Abbey Way, about 2000 feet east of Church Street. The new well was drilled, the casing and gravel pack were installed and the well was test pumped for proper sizing. We equipped the well with a pump and motor and installed a pipeline to deliver the water to our distribution system. Construction is complete and total design and construction costs approached $1,000,000.

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