Does Softened Well Water Have Sodium in It?

Written by Craig "The Water Guy" Phillips

Yes, softened well water does contain sodium. When your water softener runs, it replaces calcium and magnesium ions (which cause hardness) with sodium ions through ion exchange.

The amount of sodium added depends on your original water hardness—typically about 12.5-28mg per 8-ounce glass.

While this is considered "very low" by FDA standards, those on sodium-restricted diets should know their options for reducing this content in drinking water.

Key Takeaways

• Yes, softened well water contains sodium introduced through the ion exchange process.
• Water softeners replace calcium and magnesium ions with sodium ions during treatment.
• Sodium levels in softened water directly correlate with the original hardness of your well water.
• An 8-ounce glass of softened well water typically contains between 12.5 to 28 mg of sodium.
• Sodium levels in softened water are classified as "very low" by FDA standards.

How Water Softening Adds Sodium to Well Water

When you install a water softener for your well water, you're initiating a fascinating chemical trade-off that introduces sodium into your drinking supply.

This process, known as ion exchange, works by swapping the problematic calcium and magnesium ions (which cause hardness) with sodium ions from the softener's resin bed.

The sodium content in your softened water directly correlates with your well's original hardness level.

For instance, water with 20 grains per gallon of hardness will contribute approximately 149 mg of sodium per quart after softening.

An 8-ounce glass typically contains around 12.5 mg of sodium, though this increases with higher initial hardness levels.

We recommend regular testing of your well water hardness to accurately predict sodium addition and make informed decisions about your water consumption.

Measuring Sodium Levels in Softened Well Water

How can you determine exactly how much sodium your water softener is adding to your well water? The answer lies in understanding your water's initial hardness.

The sodium content in softened water correlates directly with the original hardness—harder water will contribute more sodium after softening.

On average, you'll find about 12.5 mg of sodium in an 8-ounce glass of softened water.

This can increase considerably with water hardness; for instance, water with 20 grains per gallon hardness yields approximately 149 mg of sodium per quart after softening.

We recommend testing your water hardness first, then calculating the resulting sodium content.

For precise measurements, contact your local health department or a water testing specialist. They'll provide accurate insights into the sodium levels in your specific system.

Health Implications of Sodium in Softened Water

Why should you be concerned about the sodium content in your softened well water?

For most healthy individuals, there's little reason to worry. The sodium levels in softened water are classified as "very low" by FDA standards, with a typical 8-ounce glass containing just 12.5-28 mg of sodium.

However, if you're on a medically prescribed low-sodium diet, even this amount could impact your daily limits.

While softened water doesn't taste salty, regular consumption adds to your overall sodium intake.

This is particularly significant if your well water had high initial hardness levels, as more calcium and magnesium means more sodium replacement.

If you have heart disease, hypertension, or kidney issues, we recommend consulting your healthcare provider about whether you should avoid softened water for drinking and cooking.

Alternative Options for Reducing Sodium Content

If you're concerned about sodium levels in your softened well water, several effective alternatives can help reduce your intake while maintaining the benefits of softened water.

Reverse osmosis systems offer the most thorough solution, removing up to 95% of sodium along with other unwanted contaminants from your drinking water.

Reverse osmosis technology effectively eliminates sodium from softened water while providing comprehensive filtration for cleaner, healthier drinking water.

For more targeted approaches, consider these practical options:

1. Install a bypass tap for drinking and cooking water, giving you access to unsoftened water without sodium addition.
2. Implement a partial bypass configuration that directs softened water only to certain areas of your home.
3. Set up a reverse osmosis filtration system specifically for your kitchen sink where drinking water is most commonly accessed.

Regular water testing will help you monitor your sodium levels and determine which solution works best for your situation.

Balancing Water Quality With Mineral Content

Achieving the perfect balance between water quality and mineral content represents a key challenge for well water owners.

We've found that while water softeners effectively remove troublesome calcium and magnesium, they introduce sodium in the process—creating a tradeoff worth recognizing.

For most households, the sodium levels in softened well water (approximately 28 mg per cup) won't greatly impact overall dietary intake.

However, if you're managing hypertension or heart conditions with sodium restrictions, you'll need to take into account these additional milligrams in your daily allowance.

Regular testing of your well water's hardness will help you make informed decisions.

You might choose to soften only your hot water line or install a bypass for drinking water if sodium content concerns you.

The goal is optimizing water quality without compromising health needs.

Frequently Asked Questions

Does Salt in Water Softener Cause High Blood Pressure?

While softened water does contain sodium, it's typically not enough to cause high blood pressure. We'd recommend monitoring your intake if you're on sodium restrictions or have hypertension concerns.

How Do You Remove Sodium From Softened Water?

We recommend installing a reverse osmosis system to remove sodium from softened water. It'll eliminate over 95% of sodium. Alternatively, you can implement a partial bypass for your drinking water.

Does Well Water Contain Sodium?

Yes, well water typically contains sodium. We'll find varying levels depending on our local geology, soil composition, and proximity to saltwater or road salt usage areas. That's why regular testing is essential.

What Is the Downside of a Water Softener?

We've found water softeners add sodium to your water, increase maintenance costs, waste water during regeneration, and may damage plants. They're also not environmentally friendly due to salt discharge.