Should I Install an Ultraviolet Light System Before or After a Water Softener?

UV Light Water Treatment: Should I Install an Ultraviolet Light System Before or After a Water Softener?

 

Adding a UV disinfection system is a powerful way to sterilize your water, but when should you install it? Here are a few simple guidelines to help you get the most out of your setup.

First, water treated by UV light should be clear and low in minerals. If the hardness exceeds 5–10 grains per gallon, use a water softener first.

If you have a water softener, install the UV sterilizer last, after the softener.

Typical installation with UV sterilizerTypical installation with UV sterilizer
Typical installation with UV sterilizer

Typical UV System Setup

If the water is cloudy or high in turbidity, it must be treated first. UV light works best when the UV Transmission level (“UVT”) is high enough for the rays to penetrate. At minimum, use a 5-micron filter for pretreatment.

If the well is influenced by surface water, it may contain parasites like Giardia. In this case, use a 1-micron absolute filter before the UV sterilizer, or consider an ultra-filtration system.

Introduction to UV Water Treatment

UV water treatment systems are a popular choice for homes and businesses. They use ultraviolet light to neutralize harmful microorganisms, offering a chemical-free, eco-friendly alternative to traditional methods. By using UV systems, you can eliminate bacteria, viruses, and other pathogens, ensuring your drinking water stays safe and clean. This article explores how UV systems work, their effectiveness, and their safety features.

How UV Light Systems Work

UV light systems target and destroy harmful microorganisms like bacteria, viruses, and parasites. A UV lamp emits ultraviolet light, which passes through the water and disrupts the DNA of microorganisms. This prevents them from reproducing and causing illness. UV treatment offers high-level purification without chemicals or additives.

What is UV Water Treatment?

UV water treatment uses ultraviolet light to eliminate microorganisms in water. It is effective against bacteria, viruses, and parasites and offers a chemical-free, eco-friendly alternative to traditional disinfection methods. UV systems help ensure your water supply is safe, providing peace of mind and protecting your health.

Effectiveness and Safety of UV Systems

UV systems are highly effective against bacteria, viruses, and parasites. They are also safe because they produce no byproducts or waste. UV disinfection is a physical process that does not change the water's taste, odor, or chemical makeup. However, UV systems do not remove non-biological contaminants like heavy metals or chemicals. For full protection, UV treatment is often paired with other filtration methods, such as reverse osmosis systems.

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Gerry Bulfin

Gerry Bulfin is a licensed water treatment contractor and consultant based in Santa Cruz California and founder and owner of Clean Water Systems and Stores Inc. Gerry is a long time member of the National Ground Water Association, the American Water Works Association (AWWA) and the Water Quality Association (WQA).

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