How to make alkaline water at home — honestly compared.
From baking soda to ionizer machines, every way to make alkaline water at home. We compare cost, taste, pH consistency, and how each stacks up against bottled alkaline water.
Searching for how to make alkaline water at home? You have several options. Some are practically free, others require a serious investment.
The real question is not just how to do it, but whether the result matches what you're actually looking for: consistent pH, good mineral content, and water that tastes clean.
Below we break down five DIY methods honestly — including what works, what doesn't, and what you should know before choosing any of them. We also explain why many people who start making alkaline water at home end up switching to bottled alkaline water instead.
★ Quick note
Alkaline water simply means water with a pH above 7. Regular tap water usually sits between 6.5 and 7.5. The methods below raise that pH to varying degrees.
★ The Methods
Five ways to make alkaline water — trade-offs and all.
Each method has trade-offs. Here's a clear look at what to expect from each one.
01
Cheapest
Baking Soda (Sodium Bicarbonate)
Cheapest
How it works: Add roughly ⅛ teaspoon of baking soda to 250ml of water. Sodium bicarbonate is naturally alkaline (pH around 8.3 in solution), so it raises the pH of your water immediately.
Pros
Cheap and easy
Available at any grocery store
Quick and simple
Cons
Noticeably salty, metallic taste
High sodium content (not for everyone)
No beneficial minerals (Ca, Mg, K)
pH varies with tap water source
Cost Tier
Cheapest
pH Achieved
~8.0 – 9.0
Taste
Salty / metallic
02
Most Debated
Lemon Water
Doesn't actually work
How it works: Squeeze half a lemon into a litre of water. The theory is that although lemon juice is acidic (pH 2-3), it produces alkaline byproducts when metabolised. However, the water itself remains acidic when tested with a pH strip.
Pros
Inexpensive and widely available
Adds vitamin C and flavour
Pleasant taste
Cons
Does NOT actually raise water pH
Acidic on contact (tooth enamel risk)
"Alkaline effect" claim isn't measurable in the water itself
Cost Tier
Cheap
pH Achieved
~3 (acidic!)
Taste
Pleasant lemon
03
Mineral Drops
pH Drops or Mineral Drops
Decent middle ground
How it works: Pre-formulated drops add alkaline minerals (typically calcium, magnesium, potassium) to your water. Doses vary by brand. You add a few drops per glass.
Pros
Adds beneficial minerals
Better taste than baking soda
Portable
Cons
Bottles aren't cheap and run out fast
Inconsistent dosing per glass
Quality varies wildly between brands
Cost Tier
Mid-range
pH Achieved
~8.5 – 9.5
Taste
Variable
04
High Investment
Ionizer / Water Ioniser Machine
Big upfront investment
How it works: Electrolysis machines split tap water into alkaline and acidic streams using electrodes. The alkaline output is what you drink. Quality (and price) varies wildly.
Pros
Consistent on-demand alkaline water
Adjustable pH levels
No bottles to manage
Cons
Significant upfront capital cost
Annual filter replacements add up
Some studies question pH durability
Mineral content depends on tap water
Cost Tier
High investment
pH Achieved
~8.5 – 11+
Taste
Clean, depends on source
05
Filter Pitcher
Alkaline Water Filter Pitcher
Best DIY value
How it works: Pitchers with replaceable filter cartridges (typically containing calcium carbonate, magnesium and ceramic media) raise pH and add minerals to tap water as it passes through.
Pros
Lower upfront cost than ionisers
Adds minerals + raises pH
No moving parts
Cons
Filters need replacing every 1-3 months
Limited daily output (1-3L)
pH consistency drops as filter ages
Cost Tier
Mid-range
pH Achieved
~8.0 – 9.5
Taste
Clean
★ Side By Side
All five methods vs Designer Water pH10.
No spin. Real numbers. Real comparison.
Method
Cost Tier
pH
Taste
Minerals
1. Baking Soda
Cheapest
8.0–9.0
Salty
No
2. Lemon Water
Cheap
~3 (acidic!)
Pleasant
Vitamin C only
3. Mineral Drops
Mid-range
8.5–9.5
Variable
Yes
4. Ionizer Machine
High investment
8.5–11
Clean
From source
5. Filter Pitcher
Mid-range
8.0–9.5
Clean
Yes
★ Designer Water pH10
Premium · ready to drink
10 (consistent)
Smooth · 96.9% preferred
Ca · Mg · K + H₂
★ Why people switch
Why choose bottled alkaline water?
DIY alkaline water gets you started. Bottled alkaline water gets you consistency. Here are the practical differences.
🎯
Consistent pH every glass
Designer Water pH10 is bottled to a stable 10 pH. DIY methods drift between 7.5 and 9.5 depending on tap water, filter age and dosing.
🧪
Real mineral content
Calcium, magnesium and potassium added during mineralisation. Most DIY methods add nothing — or add inconsistent quantities.
⚛️
Molecular hydrogen included
Designer Water is also infused with molecular hydrogen at time of bottling. This describes our process at the time of bottling.
⏱️
Zero faff, zero waste
No measuring, no filter changes, no batch failures. Just open the bottle and drink. The cost-per-litre is competitive when you factor in all the setup.
✓
quality certifications and accreditations
SANBWA, ISO 22000, Kosher, Halaal. Every batch tested. Nothing about DIY is independently audited.
😋
Tastes better
378 of 390 non-customer respondents (96.9%) preferred Designer Water in our July 2025 company-run, sighted survey. This was not a blind or independent test.
★ Skip the experiments ★
Skip the kitchen chemistry. Just open a bottle.
14-stage purified, mineral-enriched, hydrogen-infused alkaline water at pH 10. Bottled in Midrand, delivered nationwide. quality certifications and accreditations. No measuring, no mess.
Dietary certification applies to the products listed in the current certificate register. SANHA lists pH10 still water in 330ml, 500ml, 750ml, 1L and 5L, and PureSafe in 500ml and 1.5L. The Kosher certificate covers pH10 alkaline ionized water and PureSafe still water; not Kosher for Passover.
