Understanding
pH & Alkalinity in Water
A Complete Guide
pH and alkalinity are key factors in your water’s chemistry, impacting everything from corrosion to appliance wear. When water is too acidic or lacks buffering minerals, it can leach metals from pipes and damage fixtures over time. Understanding your water’s balance—and correcting low pH—is essential for long-term plumbing protection and safe water use at home.
EWU Training Guide
Understanding pH & Alkalinity
And How They Affect Your Water
Water with low pH or low alkalinity can create serious long-term issues in your home—especially if left untreated. Not only can acidic water corrode metal pipes and fixtures, but it can also affect water taste, safety, and efficiency of appliances. Alkalinity plays a stabilizing role by helping to buffer pH changes and maintain a healthy water profile.
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In this guide, we’ll explore how to test for pH and alkalinity, their impact on the Langelier Saturation Index, and the best filtration and neutralizing systems available for correcting unbalanced water. Whether you’re noticing blue-green staining, plumbing wear, or just want peace of mind, this video has the answers.
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Here’s what you’ll learn about:
- What pH & Alkalinity are
- How to measure pH & Alkalinity
- How pH & Alkalinity influence the Langelier Saturation Index (LSI)
- Different treatment technologies available for treating low pH
How EcoWater Products Can Treat pH & Alkalinity Issues in Your Homes Water Supply
EcoWater offers a range of solutions to help correct low pH and alkalinity in your water supply. For homes using reverse osmosis systems, the EACW Alkaline Filter can be added to raise the pH and improve water taste—compatible with many of our RO platforms. If your water doesn’t contain iron, whole-home tank filters like the IOAPF 10, IOAPF 12, ETF 2300PF10, or ETF 2300PF12 provide reliable pH correction at the point of entry. For homes with iron present in the water, we recommend the ECR3700 Series, which is designed to handle both low pH and iron content. With EcoWater, you get customized treatment options that restore balance and protect your home from the effects of acidic water.
- EACW Alkaline Filter For RO Systems
- IOAPF 10 / 12
- ETF 2300PF10 / PF12
- ECR3700 Series
Water Softeners
Reverse Osmosis Systems
Why Choose 

Nelson Water?
Nelson Water has been a trusted leader in the water treatment industry for over three decades. We are committed to excellence and customer satisfaction. Our extensive experience and dedication to quality ensure that your water treatment needs are met with expertise and reliability, making us the premier choice for water solutions in your area.