How to Make Alkaline Water at Home: 5 Easy Methods
Buying bottled alkaline water gets expensive fast. A single bottle of Essentia or Icelandic Glacial costs $2-3. Drink two a day and you're spending $150+ per month on water.
The good news: you can make alkaline water at home for pennies. Baking soda, lemon juice, pH drops, a water filter pitcher, or a water ionizer will all get the job done. Each method has trade-offs in cost, convenience, and consistency.
Here's exactly how to make alkaline water using each method, what pH level to target, and whether the health claims actually hold up.
What Exactly Is Alkaline Water?
Alkaline water is water with a pH level above 7. The pH scale runs from 0 to 14, where 7 is neutral. Anything below 7 is acidic. Anything above is alkaline (also called basic). For a deeper dive into the science, see our guide on what alkaline water is and how it works.
Regular tap water typically has a pH of around 6.5 to 8.5, depending on your local water supply and treatment process. Pure distilled water sits at exactly 7. Most bottled alkaline water brands sell water with a pH between 8 and 9.5.
Natural alkaline water gets its higher pH level from flowing over rocks and picking up alkaline minerals like calcium, magnesium, and potassium. That's different from artificially alkaline water, which is made by adding chemicals or running water through an ionizer.
The distinction matters. Naturally alkaline water contains alkaline minerals that your body can use. Artificially ionized water has a higher pH but may not have the same mineral content.
Method 1: Baking Soda (Cheapest and Fastest)
Baking soda (sodium bicarbonate) is the simplest way to make alkaline water. It's cheap, it works immediately, and you probably already have some in your kitchen.
Recipe
- Start with 8 oz (one glass) of filtered or purified drinking water
- Add 1/8 teaspoon of baking soda
- Stir until completely dissolved (about 30 seconds)
- Test with a pH strip if you want to verify (should read 8-9)
For a full gallon, use 1/2 teaspoon of baking soda. Mix thoroughly. It's ready to drink immediately.
Pros: Costs less than $0.01 per glass. Works in seconds. Available everywhere.
Cons: Adds sodium to your water (about 150mg per 1/8 tsp). Not ideal for people on low-sodium diets or with high blood pressure. The taste is slightly salty at higher concentrations.
Method 2: Lemon Juice (Counterintuitive but Effective)
This one confuses people. Lemon juice is acidic (pH 2-3). So how does adding something acidic make water more alkaline?
The answer is metabolic. When your body processes lemon juice, the citric acid is metabolized into alkaline byproducts. The net effect on your body's pH is alkalizing, even though the lemon water itself tests as slightly acidic.
Easy Recipe for Homemade Alkaline Lemon Water
- Cut one fresh lemon into 8 slices
- Add the slices to one gallon of purified water (don't squeeze)
- Cover and let it sit at room temperature for 8-12 hours (overnight works)
- Optional: add a pinch of pink Himalayan salt for extra minerals
Pros: Adds vitamin C and antioxidants. Tastes good. No sodium concerns.
Cons: Takes 8-12 hours. The water itself won't test as alkaline on a pH strip (the alkalizing effect happens during digestion). Citric acid can erode tooth enamel if consumed in excess.
Method 3: Alkaline pH Drops (Most Convenient)
pH drops are concentrated mineral solutions (usually containing potassium, magnesium, and calcium) that raise water's pH level instantly. Brands like Alkazone and Alkalife sell small bottles that last 2-3 months.
How to Use
- Fill a glass of water (8-16 oz)
- Add 2-3 drops from the pH drop bottle
- Stir briefly
- Drink immediately
Most brands claim their drops raise pH to between 8 and 10. A single bottle costs $10-15 and treats roughly 60 gallons of water.
Pros: Portable. Flavorless. No sodium. Adds beneficial minerals.
Cons: More expensive per glass than baking soda. Quality varies between brands. Some contain questionable additives.
Method 4: Alkaline Water Filter Pitcher
An alkaline water filter pitcher does double duty: it removes contaminants from regular tap water AND adds alkaline minerals to raise the pH. Brands like Invigorated Water, Hskyhan, and EHM sell pitchers in the $25-50 range.
The water passes through a multi-stage filter that removes chlorine, heavy metals, and other impurities, then flows through a mineral cartridge that adds calcium, magnesium, and other alkaline minerals. The result is filtered water with a pH typically between 8.5 and 9.5.
Pros: Filters AND alkalizes in one step. No daily measuring. Good water quality.
Cons: Filters need replacing every 2-3 months ($15-25 each). pH level decreases as the filter ages. Not all water filter pitchers include alkaline mineralization, so check before buying.
Method 5: Water Ionizer Machine (Best for Serious Users)
A water ionizer uses electrolysis to separate water into acidic and alkaline streams. You drink the alkaline stream and use the acidic water for cleaning or plants.
The electrolysis process splits water molecules using electrically charged plates. The alkaline stream picks up hydroxyl ions (OH-) and has a higher pH level, typically between 8 and 10. Higher-end machines let you select your target pH.
Pros: Consistent pH every time. No additives needed. Produces alkaline water on demand. Some models also produce hydrogen-rich water.
Cons: Expensive. Quality machines cost $200-500, premium models $1,000+. Requires installation at your sink. The alkaline effect may be temporary since ionized water can lose its elevated pH within 24-48 hours.
Which Method Is Best? A Quick Comparison
| Method | Cost | pH Range | Speed | Best For |
|---|---|---|---|---|
| Baking soda | ~$0.01/glass | 8-9 | Instant | Budget-conscious, occasional use |
| Lemon juice | ~$0.10/glass | Alkalizing effect* | 8-12 hours | People who want added vitamin C |
| pH drops | ~$0.05/glass | 8-10 | Instant | Portability, travel |
| Filter pitcher | ~$0.03/glass | 8.5-9.5 | 5-10 min | Daily home use, also want filtration |
| Water ionizer | ~$0.02/glass** | 8-10+ | Instant | Heavy daily use, committed alkaline diet |
*Lemon water is acidic when tested but has an alkalizing effect during digestion. **After initial equipment investment.
If you'd rather skip the DIY route entirely, check our ranking of the best alkaline water brands you can buy ready-made.
Alkaline Water Benefits: What Does the Science Say?
The alkaline water industry makes big claims. Some are supported by research. Most aren't. Here's what studies suggest that alkaline water may actually do.
Acid Reflux Relief
A 2012 study published in Annals of Otology, Rhinology & Laryngology found that water with a pH of 8.8 deactivated pepsin, the enzyme that causes acid reflux damage. This is one of the better-supported potential benefits of alkaline water. If you deal with acid reflux, drinking alkaline water might help.
Improved Hydration During Exercise
A 2017 study in the Journal of the International Society of Sports Nutrition found that participants who drank alkaline water for two weeks showed improved hydration status and reduced blood viscosity compared to those drinking regular water. Studies suggest that alkaline water may improve hydration during intense physical activity.
Blood Viscosity
A 2016 study found that alkaline water reduced blood viscosity by 6.3% compared to 3.36% for regular water after exercise. Thinner blood flows more efficiently, which could benefit cardiovascular health during workouts.
What the Evidence Doesn't Support
Despite marketing claims, there's no strong evidence that alkaline water prevents cancer, detoxifies your body, slows aging, or cures chronic diseases. The Mayo Clinic, Harvard Health, and the American Institute for Cancer Research all say the same thing: your body regulates its own pH regardless of what you drink.
Alkaline water can help with specific issues (acid reflux, exercise hydration). It's not a miracle cure for everything else.
Alkaline Water Side Effects: Is It Safe?
For most people, drinking alkaline water is safe. But there are a few things to watch:
- Reduced stomach acidity. Your stomach needs acid to digest food and kill bacteria. Drinking very high pH water (above 10) with meals could theoretically interfere with digestion.
- Alkalosis. Extremely rare, but overconsumption of highly alkaline water could cause metabolic alkalosis. Symptoms include nausea, vomiting, hand tremors, and muscle twitching.
- Medication interactions. Alkaline water might affect how your body absorbs certain medications. Check with your doctor if you take prescription drugs regularly.
- Sodium intake. If you're using the baking soda method, monitor your sodium consumption, especially if you have high blood pressure.
Stick to a pH between 8 and 9.5 for daily drinking. That's the range where potential benefits exist without meaningful risk.
Alkaline Water vs. Regular Water: Does It Actually Matter?
Here's the honest take. Your body maintains blood pH between 7.35 and 7.45 no matter what you drink. Your kidneys and lungs handle pH regulation automatically. Drinking alkaline water doesn't change your blood pH.
What alkaline water might do is provide a temporary buffering effect in your stomach and deliver trace minerals (calcium, magnesium, potassium) that regular water or regular tap water may lack. Whether that's worth the extra cost or effort depends on your specific situation.
If you have acid reflux, alkaline water is worth trying. If you exercise intensely, the hydration data is promising. For everyone else, regular filtered water is probably fine. The most important thing is that you're drinking enough water, period.
How to Test Your Water's pH Level
After making homemade alkaline water, you'll want to verify the pH. Three options:
- pH test strips are the cheapest option ($5-10 for 100 strips). Dip the strip, compare the color to the chart. Accuracy is within 0.5 pH units.
- Digital pH meter is more accurate ($15-30). Dip the probe, read the number. Calibrate monthly for best results.
- Liquid pH test drops: add drops to a water sample, compare the color. Similar accuracy to strips.
Test your water before and after alkalizing to see exactly how much the pH of your water changed. This helps you dial in the right amount of baking soda, lemon, or drops for your preferred pH level.
Custom Alkaline Water for Your Brand
For businesses looking to offer alkaline water under their own label, CustomWater.com produces private label bottled water with custom pH specifications. Design your label with our free online label designer, choose your bottle format (plastic or aluminum), and get a free quote.
Frequently Asked Questions
How do you make alkaline water with baking soda?
Add 1/8 teaspoon of baking soda to 8 oz of filtered water and stir until dissolved. For a gallon, use 1/2 teaspoon. The baking soda raises the pH to approximately 8-9, making it alkaline. It's ready to drink immediately and costs less than a penny per glass.
Is alkaline water good for you?
Alkaline water may help with acid reflux (a 2012 study found pH 8.8 water deactivated pepsin) and exercise hydration (a 2017 study showed improved hydration markers). However, there's no strong evidence it prevents cancer, detoxifies your body, or cures chronic diseases. For most people, it's safe but not a miracle cure.
What is the best pH level for alkaline water?
A pH between 8 and 9.5 is the sweet spot for daily drinking. This range provides the potential benefits of alkaline water without the risks associated with very high pH levels (above 10). Natural alkaline water brands typically fall in this range.
Can you make alkaline water with lemon?
Yes, but it works differently than you'd expect. Lemon juice is acidic (pH 2-3), but when metabolized, it produces alkaline byproducts. Slice one lemon into a gallon of water and let it sit overnight. The lemon water won't test as alkaline on a pH strip, but it has an alkalizing effect during digestion.
How long does homemade alkaline water last?
Baking soda alkaline water stays alkaline indefinitely if sealed. Lemon water should be consumed within 24-48 hours (refrigerated). Ionized water can lose its elevated pH within 24-48 hours as the hydroxyl ions dissipate. pH drop water maintains its pH as long as the container stays sealed.
Is alkaline water better than regular water?
For specific conditions like acid reflux or intense exercise, alkaline water may offer modest benefits over regular water. For general hydration, regular filtered water is equally effective. Your body regulates its own pH regardless of what you drink. The most important factor is drinking enough water daily, whether it's alkaline or not.
What are the side effects of alkaline water?
Most people experience no side effects from drinking alkaline water at pH 8-9.5. Potential concerns include reduced stomach acidity (which could affect digestion), possible medication interactions, and excess sodium if using the baking soda method. Very high pH water (above 10) consumed in large quantities could theoretically cause metabolic alkalosis, though this is extremely rare.