How Much Sodium Is in Softened Water?
The sodium concern is the most common question homeowners have about water softeners. Here's the straightforward answer: the amount of sodium added to your water by a water softener is very small.
For Orlando's typical water at 10-15 GPG hardness, a water softener adds approximately 7-8 mg of sodium per ounce of softened water. For an 8-ounce glass, that's about 12.5 mg of sodium.
To put that in perspective, here's how softened water compares to common foods and beverages:
| Item | Sodium (mg per serving) |
|---|---|
| 8 oz glass of softened water | ~12.5 mg |
| 8 oz glass of milk | ~105 mg |
| 1 slice of bread | 150-200 mg |
| 1 cup of canned soup | 600-900 mg |
| Daily recommended limit | 2,300 mg |
That means the sodium in an 8-ounce glass of softened water is roughly equivalent to about 1/8 of a slice of bread. Even drinking 8 glasses of softened water per day adds only about 100 mg of sodium — less than what's in one slice of bread.
The FDA position: The U.S. Food and Drug Administration states that water softener sodium levels are generally too low to be of health concern for healthy adults. The sodium added by ion exchange is minimal compared to the sodium found in most foods.
Health Perspectives
For most Orlando homeowners, softened water from a water softener is perfectly safe to drink. However, there are a few situations where you might want to take extra precautions:
- Infants: The American Academy of Pediatrics recommends that infants under 6 months old not drink water with sodium levels above 20 mg/L (about 50 mg per 8-ounce glass). Most water softeners produce water well below this threshold, but if you're concerned, consider a separate drinking water source for formula preparation.
- Low-sodium diets: If you or a household member is on a strict low-sodium diet (2,000 mg or less per day), the 12.5 mg per glass from softened water adds up. For a household drinking 40+ glasses per day, that's 500 mg — significant on a restricted diet.
- Hypertension concerns: For individuals with high blood pressure, any additional sodium matters. However, the amount from softened water is still very small compared to dietary sources.
Orlando-Specific Considerations
Orlando's water quality has some unique characteristics that affect the sodium question:
- Floridan Aquifer source: Orlando's municipal water comes from the Floridan Aquifer, which naturally contains minerals. The water treatment process doesn't significantly alter the sodium content before the water enters your home.
- Well water: If you use a private well in Orlando, your water hardness may be higher (15-30 GPG), which means the sodium addition from a softener would be proportionally higher. Well water users should test their softened water sodium levels.
- Climate and hydration: Orlando's hot, humid climate means many residents drink more water than the national average. Higher water consumption with softened water could mean slightly more sodium intake, though still within safe limits for most people.
Alternatives for Drinking Water
If you want to avoid sodium in your drinking water while still benefiting from softened water throughout the rest of your home, here are several options:
- Separate drinking water line: Run a dedicated water line from the main supply (before the softener) to your kitchen sink. This gives you hard water for drinking and cooking, while all other taps get soft water.
- Reverse osmosis under sink: Install a reverse osmosis system under your kitchen sink. RO removes 95-99% of all minerals, including sodium, producing the purest drinking water available.
- Activated carbon filter: A simple under-sink carbon filter won't remove sodium, but it will improve the taste of your water and remove other contaminants.
- Potassium chloride softener: Replace salt with potassium chloride in your softener. This adds potassium instead of sodium to the water, eliminating sodium concerns entirely.
Bottom line: Water softener water is safe to drink for the vast majority of people. The sodium added is very small — about 12.5 mg per 8-ounce glass, far less than what's in most foods. If you have specific health concerns, a separate drinking water line or reverse osmosis system under the kitchen sink is the simplest solution.
Cooking with Softened Water
While softened water is safe to drink, some homeowners prefer not to use it for cooking. Here's why and what to do about it:
Why some prefer hard water for cooking: Minerals like calcium and magnesium can enhance the flavor of coffee, tea, and cooking water. Softened water lacks these minerals, which some people find makes coffee taste flat or tea less aromatic. Additionally, the sodium content — while minimal — can affect the taste of bread, pasta, and other foods cooked in softened water.
What to do: Use a dedicated drinking/cooking water line that bypasses the softener. This line delivers hard (untreated) water from the main supply directly to your kitchen sink. All other fixtures in the home receive softened water.
Alternative: If you prefer the taste of filtered water for cooking, install a carbon filter or reverse osmosis system under your kitchen sink. These systems remove chlorine and contaminants while preserving or removing minerals based on the filtration type.
Softened Water and Plants
Watering plants with softened water requires some caution:
- Most houseplants: The small amount of sodium in softened water is generally not harmful. However, sensitive plants may show signs of sodium stress (brown leaf tips, stunted growth) over time.
- Delicate plants: Orchids, ferns, and carnivorous plants are particularly sensitive to sodium. Use untreated water for these plants.
- Garden watering: Softened water is generally safe for outdoor plants and gardens in moderation. The sodium content is too low to significantly affect soil chemistry for occasional use.
Bottom line: Water softener water is safe to drink for the vast majority of people. The sodium added is very small — about 12.5 mg per 8-ounce glass, far less than what's in most foods. If you have specific health concerns, a separate drinking water line or reverse osmosis system under the kitchen sink is the simplest solution.
Common Questions About Water Softeners
Is water softener water safe to drink?
Yes. Water softener water contains very little sodium — approximately 12.5 mg per 8-ounce glass. For comparison, a glass of milk contains 105 mg of sodium and a slice of bread contains 150-200 mg. The sodium added by a water softener is minimal and considered safe for healthy adults.
How much sodium does a water softener add to my water?
A water softener adds approximately 7-8 mg of sodium per ounce of softened water, or about 12.5 mg per 8-ounce glass for typical Orlando water at 10-15 GPG. This is less than 1% of the recommended daily sodium intake (2,300 mg).
Should I avoid drinking softened water if I'm on a low-sodium diet?
If you're on a strict low-sodium diet, consider using a dedicated drinking water line that bypasses the softener, or install a reverse osmosis system under your kitchen sink. The sodium from softened water is generally minimal, but bypassing the softener for drinking water gives you complete control over sodium intake.
Can I use potassium chloride instead of salt?
Yes. Potassium chloride works exactly the same way as salt (sodium chloride) but adds potassium instead of sodium to the water. It's an excellent option for households concerned about sodium content. It costs slightly more ($15-20 per 25 lb bag) but provides the same softening performance.
Is softened water safe for pets?
For most pets, softened water is safe. However, small animals (cats, small dogs) are more sensitive to sodium. If you have small pets, consider providing them with a separate water source that bypasses the softener, or use potassium chloride pellets.