Published Jul 28, 2025 · 4 Min Read

How UV water purifiers work

UV water purifiers employ ultraviolet light to effectively disinfect your drinking water. Water passes through a chamber containing a powerful UV lamp. This lamp emits germicidal UV-C rays, which penetrate and damage the DNA of bacteria, viruses, and other microorganisms. This process prevents their reproduction, ensuring you receive microbiologically safe and pure water.


Getting a new water purifier is now budget-friendly. Simply browse the selection of water purifiers on Bajaj Mall. Alternatively, visit any of Bajaj Finserv’s 1.5 lakh partner stores in 4,000 cities in India. Choose the product that you like and get Easy EMI and zero down payment offers exclusively with Bajaj Finserv’s financing options. Check your loan eligibility and convert the cost of your new water purifier into Easy EMIs.

Benefits of using UV light for water purification

  • Chemical-free disinfection: UV purification effectively kills bacteria, viruses, and other microorganisms without adding chemicals or generating by-products.
  • Preserves water quality: It does not alter your water's taste, odour, or essential mineral content, ensuring a natural drinking experience.
  • Instant and efficient: UV systems disinfect water instantly, providing immediate access to microbiologically safe water.
  • Environmentally friendly: This method is a sustainable choice, generating no wastewater and consuming minimal power.

Smart shopping starts here: Explore exclusive offers and pair them with affordable Easy EMIs for a rewarding shopping experience.

UV vs other purification methods

CriterionUV purifierRO purifierUF purifierGravity purifier
Purification mechanismUV-C light deactivates microorganisms.Pressure forces water through a semi-permeable membrane.Water passes through a hollow fibre membrane.Multi-stage filters; water flows by gravity.
Contaminants removedBacteria, viruses, cysts.Total Dissolved Solids, heavy metals, chemicals, microbes.Bacteria, cysts, suspended solids, turbidity.Sediment, turbidity, some chemicals, some microbes.
Requires electricityYesYesNoNo
Waste water generatedNoYes (significant amount).Minimal (for occasional backwash).No
Mineral retentionYes (retains natural minerals).No (removes most; may require re-mineralisation).Yes (retains natural minerals).Yes (retains natural minerals).
Typical cost (operation)Medium (for lamp replacement).High (for membranes, pre-filters, water wastage).Low (for filter replacement).Low (for filter replacement).

Updated price list of the best water purifiers models with UV technology 2025

ModelsApproximate price
Pureit Copper 8 L RO + UV + MF + Minerals + Copper Water PurifierRs. 21,990
Aquaguard Blaze Insta Hot & Ambient 5.6 L UV + UF + Copper Water PurifierRs. 19,700
Aquaguard Slim Glass 3.6 L RO + UV + Copper Water PurifierRs. 18,950
A.O. Smith Intelli UV Plus 4.5 Litres UV Plus US Plus SAPC Technology Water PurifierRs. 10,390
Croma 7L RO + UV + UF + Minerals Water PurifierRs. 7,999

Disclaimer: Product features, availability, and prices may differ based on location and time. For the latest and most accurate details, kindly refer to the official website. 

Please note: Easy EMI facility is applicable on purchases above Rs. 5,000.


Looking to buy a water purifier on Easy EMIs? Use the store locator to find our partner stores.

Get your water purifier on Easy EMIs with Bajaj Finserv

Bringing home a new water purifier is now hassle-free with Bajaj Finserv’s flexible financing options. Follow these simple steps to buy your preferred water purifier on Easy EMIs:

  • Explore models on Bajaj Mall: Browse through a wide selection of water purifiers on Bajaj Mall. Compare different models and their features to find the one that meets your needs.
  • Visit a partner store: Once you have shortlisted a model, head to any of Bajaj Finserv’s 1.5 lakh partner stores across 4,000 Indian cities. View the product in person and take expert help if needed before making a final decision.
  • Choose the Easy EMI Loan option: At checkout, opt for the Bajaj Finserv Easy EMI Loan. Get financing of up to Rs. 5 lakh and convert your purchase into affordable EMIs. Select models may also be available with zero down payment.
  • Check your loan eligibility online: To make the process smoother, check your pre-approved loan limit online by entering your mobile number and OTP. This gives you clarity on how much you can borrow before visiting the store.
  • Use the EMI Network Card for purchases up to Rs. 3 lakh: If you own the Bajaj Finserv EMI Network Card, use it to split payments of up to Rs. 3 lakh into monthly instalments—no paperwork, no delays.

FAQs

Can I buy a water purifier on EMIs?

Yes, you can purchase a water purifier with Bajaj Finserv’s Easy EMI options. 

If you are an existing user of the Bajaj Finserv Insta EMI Card: 

  • Explore a wide range of water purifiers on Bajaj Mall
  • Choose the preferred model and visit a Bajaj Finserv partner store to check it out in person
  • Use your EMI Network Card and avail of Easy EMIs for affordable monthly payments
  • Enjoy your new water purifier on Easy EMIs

If you do not have one, there is no need to worry. Check your Insta EMI Card eligibility and take the first step towards enjoying the affordability and convenience of Easy EMIs.

What is a UV light water purifier?

A UV light water purifier uses ultraviolet (UV-C) light to effectively disinfect water. Water passes through a chamber where a powerful UV lamp emits germicidal rays. This light damages the DNA of bacteria, viruses, and other microorganisms, preventing their reproduction. This ensures you receive microbiologically safe and pure drinking water.

Is a UV light water purifier effective without a pre-filter?

No, a UV light purifier is not fully effective without a pre-filter. Turbidity and suspended particles in water can shield microorganisms from UV light, reducing disinfection efficiency. Pre-filters are crucial for removing these impurities, ensuring the UV light properly reaches and deactivates all pathogens for optimal purification.

Does UV affect the taste of water?

No, UV light does not affect the taste or odour of water. UV purification is a physical process that uses light to deactivate microorganisms; it does not add any chemicals to the water. Therefore, your water retains its natural taste, smell, and essential mineral content, making it pleasant to drink.

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You can use the Bajaj Finserv App to: 

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  • Shop from over 100+ brand partners that offer a diverse range of products and services.
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Download the Bajaj Finserv App today and experience the convenience of managing your finances on one app.

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