Water softners and cast iron pipes

I have seen first hand the damage a softener system does to cast piping. In this specific case, the discharge line tapped into the washer drain line. The trap rusted to almost a close. Major flood damage occurred and bio growth set in. The insurance company, AAA would not cover the pipe repair, only the flooring and wall work. Fortunately, this was a family members house and not a customers. Now and because of that I call out water softeners in use with a home equipped with cast piping. I have always called out cast piping as having an average life of 40 years and recommend sewer line scoping to ensure theirs are in serviceable condition.

This thread was started in 08.

Can I ask why you assume it was caused by the water softener?

And apparently some can’t read.:roll:

Mayo Clinic:
Regular tap water contains very little sodium. The amount of sodium a water softener adds to tap water depends on the “hardness” of the water. Hard water contains large amounts of calcium and magnesium. Some water-softening systems replace calcium and magnesium ions with sodium ions. The higher the concentration of calcium and magnesium, the more sodium needed to soften the water. Even so, the added sodium doesn’t add up to much.

An 8-ounce (237-milliliter) glass of softened water generally contains less than 12.5 milligrams of sodium, which is well within the Food and Drug Administration’s definition of “very low sodium.” Thus, it’s unlikely that sodium in softened water would pose a risk for most healthy people.

However, if you’re on a very low-sodium diet and you’re concerned about the amount of sodium in softened water, you may want to consider a water-purification system that uses potassium chloride instead. Another option is to soften only the hot water and use unsoftened cold water for drinking and cooking.

In any case, it’s important to keep in mind that the majority of sodium in an average person’s diet comes from table salt and processed foods. Thus, the best way to decrease sodium in your diet is by putting away the saltshaker and cutting back on processed foods.