Basin Water, Inc - Solutions

Hi-Desert Water District

Hi-Desert Water District Relies On Groundwater Wells - And Basin Water

Hi-Desert Water District Yucca Valley, California www.hdwd.com

Basin Water 2500 GPM Nitrate Removal & Blending Facility

Project: Basin Water 2500 GPM Nitrate Removal & Blending Facility

Executive Summary

According to the Hi-Desert Water District (Hi-Desert) located in Yucca Valley, California, the district is 100% dependent on groundwater wells. For years, Hi-Desert operated in an overdraft condition, pulling more water from its wells than was naturally replenished. The Morongo Pipeline was built to supplement local groundwater supplies with state project water, through a series of recharge basins. Unfortunately, that solution created a water quality problem. The rising groundwater intercepted nitrates from septic systems throughout the area, causing a large part of the aquifer to exceed the safe drinking water levels for nitrate. Two of the District's highest producing wells had to be shut down due to unacceptable level of nitrates, cutting the available water supply by more than 25%. Faced with increasing demand, shrinking supply, and a growing water overdraft, Hi-Desert turned to Basin Water for a cost-effective, long-term solution that could be implemented in time to avert a potential water shortage. Basin Water designed and built a 2500 GPM combination nitrate removal and blending facility which delivers 2.8 million gallons of safe drinking water daily to the communities served by Hi-Desert.

During the planning and design of the permanent plant, Hi-Desert received an Environmental Protecton Agency (EPA) 50% grant to aid in the facility construction. Because of the region's scarce water resources and Basin Water's significant reduction in waste generation, EPA designated Basin Water's Ion Exchange technology as sole source for this project.

Multiple groundwater wells provide raw water at a rate up to 2,500 gpm (gallons per minute). This untreated water has a nitrate level of 58 ppm (parts per million). After treatment and blending, the nitrate level is 20 ppm, a 2/3 reduction and well below the MCL of 45 ppm. The waste rate was equally impressive: approximately 0.3% of feed rate, with a net waste rate (based on a blend of 50% treated water and 50% well water) of 0.15%. That's far below any other current technology, and helps Hi-Desert conserve precious water resources.

Basin Water guarantees compliance over the life of the contract and continuously monitors the system to ensure optimal operation.

The 2,500 gpm permanent facility received its operating permit in June 2002, and went on-line just in time to meet peak summer demand. The rapid deployment of the Basin Water system enabled Hi-Desert to prevent an immediate water shortage, water that thousands of people depend on every day. The district intends to use the Basin Water facility as base load, providing a long-term, safe and reliable source of water for its customers for years to come.

Lee Pearl, manager of Hi-Desert, said: "Our community depends on our water resources for economic survival. Basin Water designed and built the nitrate removal plant in record time, and the overall recovery of water is in excess of 99.8%. Also, the fact that the Basin Water system can treat other contaminants is like an insurance policy against changing standards."


Solutions
Case Studies > Arizona Water > Avondale > Baldy Mesa > Cal Water > Coachella Valley > East Valley > Hi-Desert > Pomona > SoCal Water Browse Solutions > By Contaminant > By Region > By Customer Hi-Desert Water District Hi-Desert Water District Relies On Groundwater Wells - And Basin Water Hi-Desert Water District Yucca Valley, California www.hdwd.com Basin Water 2500 GPM Nitrate Removal & Blending Facility Project: Basin Water 2500 GPM Nitrate Removal & Blending Facility Executive Summary According to the Hi-Desert Water District (Hi-Desert) located in Yucca Valley, California, the district is 100% dependent on groundwater wells. For years, Hi-Desert operated in an overdraft condition, pulling more water from its wells than was naturally replenished. The Morongo Pipeline was built to supplement local groundwater supplies with state project water, through a series of recharge basins. Unfortunately, that solution created a water quality problem. The rising groundwater intercepted nitrates from septic systems throughout the area, causing a large part of the aquifer to exceed the safe drinking water levels for nitrate. Two of the District's highest producing wells had to be shut down due to unacceptable level of nitrates, cutting the available water supply by more than 25%. Faced with increasing demand, shrinking supply, and a growing water overdraft, Hi-Desert turned to Basin Water for a cost-effective, long-term solution that could be implemented in time to avert a potential water shortage. Basin Water designed and built a 2500 GPM combination nitrate removal and blending facility which delivers 2.8 million gallons of safe drinking water daily to the communities served by Hi-Desert. During the planning and design of the permanent plant, Hi-Desert received an Environmental Protecton Agency (EPA) 50% grant to aid in the facility construction. Because of the region's scarce water resources and Basin Water's significant reduction in waste generation, EPA designated Basin Water's Ion Exchange technology as sole source for this project. Multiple groundwater wells provide raw water at a rate up to 2,500 gpm (gallons per minute). This untreated water has a nitrate level of 58 ppm (parts per million). After treatment and blending, the nitrate level is 20 ppm, a 2/3 reduction and well below the MCL of 45 ppm. The waste rate was equally impressive: approximately 0.3% of feed rate, with a net waste rate (based on a blend of 50% treated water and 50% well water) of 0.15%. That's far below any other current technology, and helps Hi-Desert conserve precious water resources. Basin Water guarantees compliance over the life of the contract and continuously monitors the system to ensure optimal operation. The 2,500 gpm permanent facility received its operating permit in June 2002, and went on-line just in time to meet peak summer demand. The rapid deployment of the Basin Water system enabled Hi-Desert to prevent an immediate water shortage, water that thousands of people depend on every day. The district intends to use the Basin Water facility as base load, providing a long-term, safe and reliable source of water for its customers for years to come. Lee Pearl, manager of Hi-Desert, said: "Our community depends on our water resources for economic survival. Basin Water designed and built the nitrate removal plant in record time, and the overall recovery of water is in excess of 99.8%. Also, the fact that the Basin Water system can treat other contaminants is like an insurance policy against changing standards."
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