Sodium Water Test

For healthy people, the sodium in tap water is rarely a health problem, since food supplies far more. High levels are a concern mainly for people with high blood pressure, heart failure, or kidney disease who are limiting salt. A high result can also signal that road salt, septic waste, or seawater is reaching your well, which is worth a closer look even if you feel fine.

There is no federal limit. The EPA advisory suggests 20 milligrams per liter as a guide for people on a very low sodium diet of about 500 mg a day. Many healthy adults drink water above that without concern. Your doctor can tell you which number fits your own health needs, and your result shows how much your water adds.

Yes. A softener removes calcium and magnesium by exchanging them for sodium, so softened water always carries more. The harder your water before treatment, the more sodium ends up in it. Switching to potassium chloride salt or keeping one unsoftened tap for drinking and cooking are common ways to cut that amount.

Often you cannot. Many people only notice a salty taste once sodium climbs well above normal levels, and chloride usually drives that taste more than sodium does. Water can carry enough sodium to count for a low-salt diet without tasting any different, which is why a number from our lab is more dependable than your palate. If you are on a salt-restricted diet, that number is the one to share with your doctor.

No. Boiling drives off water as steam and leaves the sodium behind, so the water that remains becomes slightly saltier. Treatment options exist, and our team can talk them through with you. Many pitcher filters will not lower sodium in any useful way, so check a filter's certification before you rely on it for a low-sodium diet.

Road salt is the most common reason in northern states. Salt applied each winter builds up in soil and groundwater, so levels can creep higher year after year even if nothing on your property has changed. A new softener, a failing septic system, or heavy pumping near the coast can also raise sodium. Testing sodium and chloride together every year or two shows the trend, so you can see whether the rise is steady or leveling off.

It can be, depending on where you live. Wells near salted roads, coastal wells where seawater creeps in, and homes with water softeners often run higher than typical city water. City water varies too, since utilities that draw from salt-affected rivers or aquifers may deliver more sodium, and many list it in their annual water quality report. A test at your own tap shows what your household drinks, which a regional average cannot tell you.

For healthy adults it is usually fine, though softened water carries extra sodium, and the amount rises with how hard your water was before treatment. For someone on a low-sodium diet, that extra may be worth tracking. Some households leave one kitchen tap unsoftened for drinking and cooking for this reason. Knowing your sodium level gives you and your doctor a number to work with when deciding what suits your household and any diet you follow.