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Nitrate Nitrate
Anion Exchange Filter Systems (not NSF or California certified)
The reverse osmosis systems we carry are certified for nitrate removal. Distillers also work very well, and if the water is to be used for an infant, pregnant mother or other individual at serious risk for nitrate poisoning, then we usually recommend distillers since all the distilled water can be certain to be free of nitrate. Nitrate has no taste or odor. Nitrate, often found as calcium-nitrate in wells, is usually a result of nitrate fertilizers used in agriculture, from livestock manure run-off, or from septic tanks leaching into ground water. Nitrate is highly soluble in water and therefore can soak into ground waters quickly. In the nitrate removal systems we manage, we have often seen nitrate levels fluctuate seasonally, seemingly based on rainfall. Shallow wells are more quickly and adversely affected than deep well-constructed wells. If your area or well is prone to nitrate contamination, regular water analysis is recommended. Although high nitrate levels have been implicated in central nervous disorders and hypertension in adults, nitrate has been highly regulated primarily to prevent methemoglobinemia, a sometimes fatal blood condition in infants also known as "blue baby syndrome". This condition reduces the blood's oxygen carrying ability in infants and fetuses. High levels of nitrate have also been linked to miscarriages in humans and livestock, including horses. Nitrate is either expressed in reports as Nitrate-N (nitrate as nitrogen) or Nitrate as Nitrate. The maximum contaminant level (MCL) for nitrate is 10 ppm (also known as milligrams per liter). To express nitrate as nitrate, multiply by 4.4 The MCL for nitrate as nitrate is 44 ppm for instance. Nitrate removal systems include: ion-exchange, reverse-osmosis, distillation, biodenitrification, and eletrodialysis. Almost all of the nitrate removal systems in our home area (Northern California - Monterey Bay) are on very small systems such as small neighborhoods, farm labor housing, and commercial establishments such as schools and restaurants etc. The most commonly used treatment approach is by ion-exchange, the same technology water softeners employ. With this type of system, chlorides are exchanged for the nitrate, and the high nitrate waste is flushed into a holding tank or drain field . Depending on the application, it is often more desireable to drill a deeper well or tie-in to an alternate water source, rather than treating the water for nitrate, due to the high levels of brine discharge from these systems. For whole house treatment, or for small communities with nitrate in ground water, we offer custom systems for specific applications. Pretreatment and total system design is important. In California, and in many other states in the U.S, if you are looking for a nitrate filtration system for your small community water system, each system installed must be individually certified by the Health Dept. for nitrate removal. Typically all the water must be filtered, and individual point-of-use filters at kitchen taps are not allowed for compliance with the nitrate MCL standard. If you wish our technical staff to provide a quote for small community or whole house nitrate removal or for more information, please suppy us with an accurate water analysis and contact our technical team by completing an online technical request form or by calling our offices at (831) 476-0515. |
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