What should be installed to lower pH in a plumbing system?

To lower the pH in a plumbing system, a neutralizing filter should be installed. This type of filter is designed specifically to address acidic water conditions by adding alkaline materials, such as calcite or magnesite, which help to neutralize the acidity and raise the pH level to a more balanced state. This adjustment in pH is crucial because water that is too acidic can cause corrosion of pipes, leading to leaks and the leaching of metals into the water supply.

In contrast, options like an acid filter or a softener do not effectively address pH levels in the same way. An acid filter may suggest that it is designed to remove acid in a different manner or context, but it doesn't typically function to adjust pH levels directly. A water softener focuses primarily on exchanging calcium and magnesium ions for sodium ions to reduce water hardness, without a direct mechanism to change pH. A balancing valve, meanwhile, is used to regulate flow and pressure within a plumbing system but does not influence water chemistry, including pH levels.

Using a neutralizing filter is thus the appropriate solution for correcting low pH levels, ensuring the longevity and safety of the plumbing system.