Problem – Acid Water, low pH
Symptoms: Blue-green stains on plumbing fixtures, showers, tubs, faucets and drains, and possibly pinhole leaks in copper plumbing.
Causes: Naturally low pH water, high dissolved oxygen, poor plumbing practices (excessive flux, improper de-burring of copper pipes), improper electrical grounding, excessive sand or sediment and/or high velocity flow rates. In a high percentage of the cases, the source of the corrosion may not be determined.
Health Concerns:Though a small amount of copper is required by the human body as an essential nutrient, long-term exposure to elevated levels of copper in drinking water may cause serious health problems. Short periods of exposure to high levels of copper can cause gastrointestinal problems, including nausea and vomiting and longer intervals may cause liver or kidney damage.
Action Level: Over 1.0 mg/l (milligram per liter).
pH is that it is a measure of the activity of the hydrogen ion H+. The pH scale ranges from 0 to 14.
In general, water with a pH of less than 7 is considered acidic and with a pH greater than 7 is considered basic. The normal range for pH in surface water systems is 6.5 to 8.5 and for groundwater systems 6 to 8.5. Alkalinity is a measure of the capacity of the water to resists a change in pH that would tend to make the water more acidic. The measurement of alkalinity and pH are both needed to determine the corrosivity of the water.
The pH of pure water or H20 is 7, but when exposed to the carbon dioxide in the atmosphere this results in a pH of approximately 5.2.
In general, water with a low pH less than 6.5 could be acidic and corrosive. Therefore, the water could leach metal ions such as: iron, manganese, copper, lead, and zinc from the aquifer, plumbing fixtures, and piping. Also, a water with a low pH could contain elevated levels of toxic metals, cause premature damage to metal piping, and have associated aesthetic problems such as a metallic or sour taste, staining of laundry, and the characteristic blue-green staining of sinks and drains . The primary way to treat the problem of low pH water is with the use of a neutralizer.
There are two ways of providing neutralization of acidic waters:
Acid Water Solutions:
The GREEN WATER Calcite Neutralizer System is designed to raise the pH of the water supply
Calcite is a naturally occurring calcium carbonate media. One of the advantages of Calcite is its self-limiting property. When properly applied, it corrects pH only enough to reach a non-corrosive equilibrium. It does not overcorrect under normal conditions. Upon contact with calcite, acidic waters slowly dissolve the calcium carbonate to raise the pH which reduces potential leaching of copper, lead and other metals found in typical plumbing systems. Periodic backwashing will prevent packing, reclassify the bed and maintain high service rates. Depending on pH, water chemistry and service flow, the Calcite bed will have to be periodically replenished as the calcite is depleted. As the Calcite's calcium carbonate neutralizes the water, it will increase hardness and a softener may become necessary after the neutralizing filter.
Includes Free Bypass Valve