EDITOR: Perchlorate can be removed from well water today. Yes,
the technology does exist and has been proven. The company that can
do this is EXTi, Electro Oxidation Technologies. I talked with
President Roy Hays, Vice President Lee Deckard and Chief Technical
Officer Abdullah Kazi about their process to remove perchlorate
from well water. I was impressed. We set a date for them to bring
their product to our well that supplies water to four homes.
EDITOR:
Perchlorate can be removed from well water today.
Yes, the technology does exist and has been proven. The company that can do this is EXTi, Electro Oxidation Technologies. I talked with President Roy Hays, Vice President Lee Deckard and Chief Technical Officer Abdullah Kazi about their process to remove perchlorate from well water. I was impressed. We set a date for them to bring their product to our well that supplies water to four homes.
Their patented Electro Oxidation System successfully treats dissolved organic contaminants (chemical and biological) as well as inorganic ions including heavy metals, nitrates and perchlorate in water. This process is highly efficient and more cost effective than other treatment methods with test results below regulatory limits.
On March 18, EXTi brought its product to our home, collected and treated various samples of our well water.
Those samples were sent to two different labs for analysis of the reduction of perchlorate and nitrates.
Sequoia Analytical in Morgan Hill received three samples and was asked to check for the nitrate levels. Our current nitrate level is 45 ppm, (parts per million).
The three post-treatment samples measured 7.2, 8.3 and 9.0 ppm. The reason for the different readings is that the process was adjusted for different voltage and current settings in the electrolytic cells.
Eight samples were sent to BSK Labs in Fresno for measuring the reduction of perchlorate. BSK Labs can accurately measure perchlorate down to 2.0 ppb (parts per billion). The untreated water measured 10 ppb and the treated water samples measured non-detect. Sequoia Analytical can only measure perchlorate down to 4.0 ppb. Another big plus for this process, is that there is not any by-product left from its operation.
EXTi has four goals: To build a system that can handle municipal requirements. Also have one that can be used for multi-homes on one well. Then, a single-home system and the smallest one would be mounted under the sink in the kitchen. With the current technology that they have developed, they could treat the ground water at the Olin site on Tennant Avenue.
EXTi will soon have its product certified to NSF, (National Sanitation Foundation) standards.
Robert J. Cerruti, San Martin
