Member's Mark Alkaline Plus is mineralized water with potassium hydroxide, calcium chloride, and magnesium chloride added to purified water for alkalinity and electrolyte content. This product contains no problematic ingredients - it's clean mineral water. The DIY version allows you to control mineral ratios and avoid plastic bottle waste while achieving significant cost savings.
Based on: Alkaline Plus Purified Water
· Makes approximately 40 servings (1.25 gallons)
· Serving: 16.9 fl oz (500ml) bottle equivalent
Why This Recipe is Seed Oil Free
Commercial Alkaline Plus Purified Water from Member's mark often contains inflammatory seed oils like canola, soybean, or sunflower oil. This homemade version replaces them with healthier fats like butter, ghee, coconut oil, or avocado oil — giving you the same great taste without the processed oils.
The original Alkaline Plus Purified Water may also contain artificial dyes. Check it on DyeFreeCheck to find out.
Ingredients
Purified water (distilled or reverse osmosis)
4.7 liters (1.25 gallons) · Primo or Smartwater Distilled Water
Base water that's been stripped of minerals and contaminants, providing a clean slate for controlled mineralization.
Primary alkalizing agent that raises water pH to 8.5-9.0 range while adding beneficial potassium.
Food grade calcium chloride
1.2g (1/4 teaspoon) · Earthborn Elements Calcium Chloride Food Grade
Adds bioavailable calcium ions and contributes to water's mineral taste profile.
Food grade magnesium chloride
0.6g (1/8 teaspoon) · Ancient Minerals Magnesium Chloride Flakes
Provides highly absorbable magnesium and balances the overall mineral profile.
Instructions
Step 1. Start with exactly 4.7 liters (1.25 gallons) of distilled or reverse osmosis water at room temperature in a large glass pitcher or stainless steel container. Never use tap water or spring water as existing minerals will interfere with the precise mineral balance you're creating.
Step 2. Measure potassium hydroxide extremely carefully using a precise digital scale (to 0.1g accuracy) - this is a caustic substance that requires safety precautions. Wear safety glasses and nitrile gloves. Measure exactly 0.8g and dissolve it in 50ml of the purified water first, stirring with a stainless steel spoon until completely dissolved (about 2-3 minutes). This pre-dissolution prevents hot spots and ensures even distribution.
Step 3. Add the dissolved potassium hydroxide solution to your main water batch and stir gently for 1-2 minutes. Test the pH using calibrated pH strips or a digital pH meter - you should see a reading between 8.5-9.0. If below 8.5, add tiny amounts (0.1g) more potassium hydroxide until you reach target pH.
Step 4. Measure calcium chloride precisely (1.2g) and dissolve in another 50ml portion of your purified water, stirring for 2-3 minutes until crystals completely disappear. The solution may feel slightly warm - this is normal. Add this dissolved solution to your main batch and stir gently.
Step 5. Finally, measure magnesium chloride (0.6g) and dissolve in 50ml of purified water, stirring until completely dissolved (3-4 minutes as magnesium flakes take longer). Add to main batch and stir thoroughly for 2-3 minutes to ensure complete integration.
Step 6. Let the finished alkaline water rest for 30 minutes at room temperature, then test final pH (should be 8.5-9.0) and taste. The water should have a clean, slightly mineral taste without any harsh or salty notes. If too alkaline (pH above 9.0), dilute with additional purified water until you reach proper range.
Step 7. Store in glass containers only - never plastic as alkaline water can leach chemicals from plastic over time. Refrigerate and use within 2 weeks. Shake gently before each use as minerals may settle slightly. Consume 16-32 oz daily, preferably between meals to avoid interfering with stomach acid production.
Storage
Store in glass containers in refrigerator for up to 2 weeks. Avoid plastic containers as alkaline water can degrade plastic over time. Shake gently before use as minerals may settle. Keep ingredient powders in airtight containers in cool, dry place - they last 2+ years.
Cost Comparison
Cost per serving (homemade)$0.062
Cost per serving (store-bought)$1.25
Savings95%
Massive upfront savings despite higher initial ingredient cost. The mineral compounds last for months of batches. Buying ingredients in bulk reduces cost to under 7 cents per bottle vs $1.25+ retail.