Drinking water has a normal pH range between 6 and 8.5, meaning that it typically has a level that's just below or just above a neutral pH. There are a number of factors that can lower the pH of water. Acid water can cause metal pipes to corrode and leave blue-green stains on your sinks, faucets, and other plumbing fixtures.
The US Water Matrixx pH Balancing Backwashing Calcite Neutralizer System designed to raise the pH of the water supply
Acid water is water with a low pH, meaning that it's more likely to corrode metal pipes and leach metals out of exposed surfaces. The pH of a solution is a measure of the activity of hydrogen ions (H+) in that solution. In practical terms, it's a measurement of how acid or basic a solution is. The pH scale ranges from 0 to 14, with lower numbers being more acidic.
In general, water with a pH that is lower than 7 is considered acid water, with lower numbers being increasingly acidic. Water with a pH that's greater than 7 is considered basic, with higher numbers being increasingly alkaline. 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 corrosiveness of the water.
To put the importance of pH into perspective, remember that the pH scale is logarithmic. Water with a pH of 8.0 is ten times more alkaline than water with a pH of 7.0, and water with a pH of 9.0 is 100 times more alkaline than a solution with a pH of 7.0.
If your water has a low pH, meaning that you have high water acidity, you may see blue-green stains on your plumbing fixtures, faucets, and drains, as well as on bathtubs and sinks. Acid in water can even cause pinhole leaks in copper plumbing. Water that has a pH less than 6.5 could be acidic and corrosive. Acid water has the potential to leach metal ions, including iron, manganese, copper, lead, and zinc, from aquifers, plumbing fixtures, and piping. Because of its corrosive nature, this water could contain elevated levels of toxic metals, damage metal pipes. Many people also find that low pH water has a sour or metallic taste (because of the dissolved metals). It can also discolor laundry as well as plumbing fixtures.
Learn more about how to treat acid water at Ask The Water Doctor Blog.
Acid water can be naturally occurring, or caused by a high level of dissolved oxygen. Acidic waters are typically low in buffering calcium minerals, but are high in dissolved carbon dioxide, which can cause the low pH or acidity.
The biggest health problem with acid water is related to copper pipes. Acid in water can dissolve some of the copper from the pipes, where it can be consumed in drinking water. While we all need a small amount of copper in our diets, long-term exposure to high amounts of copper in could cause serious health problems, including liver or kidney damage. Even short-term exposure can cause stomach problems, like nausea and vomiting.
You should address acid water issues if your water has a pH lower than 6.5.
Acidic water is typically treated with a pH water filter that includes a water neutralizer. There are two ways of neutralizing water acidity:
If you think that you have acid water, please call our Certified Water Specialists at 1-800-608-8792.