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Drinking Water Purifiers from the House of Parashu®
Parashu® drinking water purifiers are made by Ira Waters in Kolkata for homes, offices, factories and institutions. The range covers non-RO purifiers that use filtration, UF and UV to remove germs while keeping natural minerals, an alkaline RO+UV purifier for high-TDS water, and heavy-duty systems for large user groups. Prices start at ₹3,894. Every model is sold and installed in and around Kolkata only, and shipping is always free.
Whether it is for your home, your office, a factory or a business outlet, there is a Parashu® purifier sized for the job. Our heavy-duty units can easily serve a user base of 25 to 50 people, and they are wall mounted, so they take up no floor space. The non-RO machines deliver pure mineral drinking water, keeping the TDS intact. If none of the standard models fits, we can also custom make a machine for you — talk to us.
Water purifiers for homes and home offices
Compact purifiers for families, flats and home offices, from a DIY plug-and-play filter to a five-stage RO+UV with an alkaline mineral stage.
Parashu® Versatile
A plug-n-play, DIY maintenance, manually operated water filtration system. Works with any source of freshwater, municipal or borewell. Provides 99.99% germ free drinking water.
Parashu® Elegant
Now, wash vegetables, or cook in purified water. Elegant is one single machine that you can use for washing vegetables, cooking and drinking, with no fuss. It will take care of your drinking water needs.
Parashu® Ultra Secure Drinking Water Purifier
Enjoy a full service, high capacity, online water purifier for your drinking water requirement, without compromising on quality.
Parashu® Secure (UF+UV)
New technology home and office (SOHO) drinking water filter. 5-stage, instant water purification at the turn of a tap using a UF membrane and a UV chamber, keeping natural minerals intact.
Parashu® Secure (RO+UV) Alkaline
New technology home and office (SOHO) alkaline drinking water filter. Pre-filters, RO and UV purification, then an alkaline mineral stage that restores minerals and raises pH. For high-TDS water.
Heavy-duty purifiers for offices, factories and institutions
Wall-mounted systems for workplaces, kitchens, schools, clubs and community drinking water points, plus a dedicated filter for existing water coolers.
Parashu® Little Master
Parashu® Little Master is the preferred installation for small warehouses, NGOs, restaurants, workshops, factories, schools and large establishments.
Heavy Duty Water Cooler Commercial Filter System
Heavy duty, failsafe drinking water filter for all water coolers, that can be wall mounted.
₹ 31,860 (1000 LPH)
Parashu® Heavy Duty Drinking Water System
Suited for large factories, premium clubs, community drinking water systems, joint families, temples, hotels, restaurants, large kitchens and more.
How to choose the right drinking water purifier
The right purifier depends far more on your water than on the price tag. Four questions settle almost every choice.
- What is the TDS of your water? Total dissolved solids decide between RO and non-RO. The Indian drinking water standard IS 10500:2012 sets 500 mg/L as the acceptable limit. Water above that, or water that tastes salty or brackish, needs reverse osmosis — choose the Parashu® Secure (RO+UV) Alkaline. Below it, a non-RO purifier is the better buy because it keeps natural minerals and sends no water down the drain.
- Where does your water come from? Borewell water around Kolkata often carries iron and hardness that stain fittings and leave white scale. Both Parashu® Secure models include iron and white-scale treatment; where iron is heavy, fit a whole-house iron removal filter first to protect the purifier and every tap in the house.
- How many people will drink from it? A family or home office is well served by the home range. Offices, factories, schools, restaurants and community water points need a heavy-duty system such as the Little Master or the Heavy Duty Drinking Water System.
- How much maintenance do you want to do? Every Parashu® purifier is installed by the Ira Waters team. After that, the Versatile is designed for DIY maintenance, while the Secure and heavy-duty models are permanent installations serviced by our team.
Parashu® drinking water purifiers compared
| Model | Type | Best for | Price |
|---|---|---|---|
| Parashu® Versatile | Plug-and-play, manually operated filtration; DIY maintenance | Any freshwater source, municipal or borewell; budget buyers | ₹ 3,894 |
| Parashu® Elegant | Single machine for drinking, cooking and washing vegetables | Kitchens that want purified water for food preparation too | ₹ 9,676 |
| Parashu® Ultra Secure | Full-service, high-capacity online purifier | Homes wanting high capacity without compromise on quality | ₹ 9,912 |
| Parashu® Secure (UF+UV) | 5-stage non-RO: pre-filters, UF and UV | Low-TDS municipal or borewell water; keeps natural minerals | ₹ 14,632 |
| Parashu® Secure (RO+UV) Alkaline | Pre-filters, RO, UV and alkaline mineral stage | High-TDS, salty or brackish water | ₹ 17,110 |
| Parashu® Little Master | Institutional installation | Small warehouses, NGOs, restaurants, workshops, factories, schools | On request |
| Water Cooler Commercial Filter | Wall-mounted filter for water coolers, 500 or 1000 LPH | Existing water coolers in offices and factories | ₹ 27,140 / ₹ 31,860 |
| Parashu® Heavy Duty | Heavy-duty drinking water system | Large factories, clubs, hotels, temples, community water points | ₹ 35,400 |
RO vs non-RO: what is the difference?
Non-RO purifiers — those built on sediment filtration, activated carbon, ultrafiltration (UF) and ultraviolet (UV) disinfection — remove particles, organic contamination, bacteria and viruses, but let dissolved minerals pass through. The water keeps its natural TDS and taste, and every litre that goes in comes out as drinking water.
Reverse osmosis (RO) goes a step further and removes dissolved salts as well, which is essential when the TDS is too high to drink comfortably. The trade-offs are that part of the incoming water leaves as reject water, and that RO also strips out useful minerals. That is why the Parashu® Secure (RO+UV) finishes its water in an alkaline mineral stage, which restores minerals and lifts the pH of the purified water.
In short: test your TDS first. If it is within the IS 10500:2012 acceptable limit of 500 mg/L, a non-RO purifier is the better choice. If it is above, choose RO with mineral restoration.
Why buy from Ira Waters in Kolkata
Parashu® is the in-house brand of Ira Waters Pvt. Ltd., a water treatment company based at 56/1/C Garcha Road, Kolkata. Because the same team designs, installs and services the purifiers, each recommendation starts from your actual water — municipal or borewell, low or high TDS, light or heavy iron — rather than from a fixed catalogue. When a standard model does not fit, we build one that does. Because every purifier needs installation, we sell only in and around Kolkata — and shipping is always free.
Call +91-9038057899, message us on WhatsApp, or send an enquiry with your water source and the number of people the purifier needs to serve.
Frequently asked questions
Should I buy an RO or a non-RO water purifier?
It depends on the total dissolved solids (TDS) in your water. IS 10500:2012 sets 500 mg/L as the acceptable TDS limit for drinking water. Above that, or if the water tastes salty, choose an RO purifier such as the Parashu® Secure (RO+UV) Alkaline. Below it, a non-RO purifier such as the Parashu® Secure (UF+UV) keeps the water's natural minerals and wastes no water.
Which Parashu® purifier is best for borewell water in Kolkata?
For borewell water with low TDS, the Parashu® Secure (UF+UV) handles particles, iron, white scale and germs. For salty or high-TDS borewell water, the Parashu® Secure (RO+UV) Alkaline is the right choice. Where iron is heavy, add a whole-house iron removal filter upstream.
Which purifier suits an office, factory or institution?
Parashu® Little Master suits small warehouses, NGOs, restaurants, workshops, factories and schools. The Parashu® Heavy Duty Drinking Water System is built for large factories, clubs, community water points, hotels and large kitchens. For existing water coolers, the Heavy Duty Water Cooler Commercial Filter System comes in 500 LPH and 1000 LPH versions.
Does a non-RO purifier keep the minerals in water?
Yes. Non-RO Parashu® purifiers use filtration, UF and UV rather than reverse osmosis, so they keep the water's TDS and natural minerals intact while removing particles and germs.
How much does a Parashu® drinking water purifier cost?
Listed prices start at ₹3,894 for the Parashu® Versatile and go up to ₹35,400 for the Parashu® Heavy Duty Drinking Water System. The Parashu® Secure (UF+UV) is ₹14,632 and the Parashu® Secure (RO+UV) Alkaline is ₹17,110.
Can Ira Waters build a custom drinking water purifier?
Yes. If none of the standard models fits your water or your number of users, Ira Waters can build a purifier to order. Contact the team in Kolkata on +91-9038057899 with details of your water source and daily requirement.
Do you sell Parashu® purifiers outside Kolkata?
No. Parashu® drinking water purifiers are sold in and around Kolkata only, because every unit needs installation by the Ira Waters team. Shipping is always free.
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