E-commerce · Water Purification
A filter is the cheap answer, so the buyer needs to be told what it does not do.
The filter buyer has usually ruled out a purifier on price, on power cuts or because they rent. They want clean-looking, safe-tasting water without a plug and a fitter. A rented flat in a city and a village home with an unreliable supply are very different buyers for the same product.
A 90-minute audit call and a written, scored report. Turnaround, reporting and term are agreed in writing after the audit.
In one paragraph
Water filters online include gravity-fed and non-electric filters, candle filters, tap-mounted filters, sediment and pre-filters for tanks and whole-house lines, and filter jugs, bought as a lower-cost option where there is no power point, no budget for a purifier or a need only to remove dirt. GullySales works on how your listings state what each filter handles, and how the buyer who needs a purifier instead is sent to one honestly.
The difficulty is the gap between what a filter does and what the buyer assumes. A sediment filter removes particles. It does not make water free of germs or dissolved salts. A listing that does not draw that line produces the review about the water still tasting bad.
Last updated 7 Oct 2026. Product, labelling and advertising rules for water purification differ by product and change. We describe them in general terms, so check the current position with your own adviser or the regulator before you publish a claim.
Who it is for
This is written for you if you sell water filters online.
- Brands selling gravity-fed storage filters on marketplaces and through dealers
- Sellers of tap-mounted and pre-filters for kitchens and overhead tanks
- Makers of ceramic and candle filters for homes and small shops
- Sellers who supply filters to hostels, schools and rural households
Not for
It is not the right fit if.
- A seller who lets buyers think a basic filter makes unsafe water safe
- A brand that has no cleaning guidance and no spare candles or elements to sell
How buyers choose
What decides the sale of water filters.
No power point and no fitter
The reason many buy this product is that it needs neither. Buyers look for the words non-electric and gravity, and for how many litres it stores and how long it takes to fill.
What it removes and what it leaves
Buyers who have read about hard water or germs ask what the filter does for those. They compare it with a purifier and ask whether it is enough.
Cleaning the candle and the tank
Many filters need the candle or element scrubbed or replaced. Buyers ask how, how often and what a replacement costs, and read reviews about slow flow.
Body, tap and storage
Stainless steel or food-grade plastic, a tap that does not leak, a lid that keeps insects out. A cracked tap in the first week becomes the review.
Where sales are lost
What usually goes wrong when you sell water filters online.
In the words sellers use on the first call.
“Reviews say it did not change the taste”
The buyer expected a purifier. A filter for particles will not remove dissolved salts or change flavour, and no listing said so.
“Flow slows down and the buyer thinks it is broken”
A clogged candle is cleaned or replaced, not repaired. Buyers who were never told call the seller or write a review.
“Very low prices and little margin”
A basic filter earns little per sale and loses it all in one carriage-paid return. Advertising has to be measured by the margin, not the click.
The scope
The work we would propose for water filters.
Measured on purchases, conversion rate, cost to win a customer, average order value and repeat purchases. Anything here that needs a platform or tool we have not used with you is confirmed in the audit before it goes in the scope.
- A "what this filter does and does not do" panelA plain panel in the first images stating what the filter removes, what it leaves and when to choose a purifier, so the expectation is set before the order.
- A filter-or-purifier question setA few questions on the water, the power supply and the budget that lead to a filter or to a purifier in your range, and say so openly.
- Institutional and bulk enquiriesA quotation form for hostels, schools and shops, taking the quantity and the place, with a follow-up when the buyer goes quiet.
- Search for no-electricity and rented-home filtersPages for a filter that works without power, a filter for a rented flat, a tap filter for an overhead tank, each pointing to a model.
Spare candles and element listings
Each filter linked to its candle, element or tap on a separate listing, with how to clean it and when it needs replacing.
What we do
What you get for water filters.
Each deliverable and what it is there to change.
A filter-versus-purifier explainer
A short page that sets out what a filter does against a purifier, for use on the listing and in replies.
A cleaning and replacement guide
A picture guide for the candle or element, with a link to buy the spare, printed for the box and shown on the page.
A spare parts page for each model
Candles, elements, taps and lids listed against each filter, so the buyer can reorder in one visit.
A bulk order sheet
A form for institutions with quantities, delivery place and need, from which a quotation is built.
How the result is measured
- Purchases
- Conversion rate
- Average order value with spares
- Return rate
- Spare and candle orders per filter sold
- Reviews citing taste or flow
Recorded as a baseline before work starts, so every later report has an honest comparison.
How it works
From your first message to the first report.
No open-ended retainer. Every step gives you something in writing.
First
Free audit call
90 minutes with whoever handles your enquiries: how they arrive, how fast they are answered, where they are lost.
After the call
Written, scored report
Six areas scored, fixes ranked by return and cost. If you want our help, the scope, the fee and the reporting come with it, in writing.
Before work starts
Baseline recorded
Enquiries by source, reply time, conversion and cost per order, written down so every later report has an honest comparison.
After the baseline
The first fix goes live
Usually the cheapest one on the report: reply time, a follow-up sequence or the marketing-to-sales handover.
As agreed
Report against the baseline
What moved, what did not, and what changes next, in plain words. How often you get it is set in writing before work starts.
At renewal
Renew on the numbers
The term ends and you decide whether to continue from the results. The length is agreed in writing before anything starts.
What we need from you
What to have ready before the audit call.
None of it has to be tidy. We read what you have.
- Your filter range with what each handles
- Spare candles, elements and taps you stock
- Reviews and returns that mention taste, flow or leaks
- Institutional customers you already supply
- Your margin on each model after fees and carriage
Selling in India and abroad
Selling water filters beyond your own market.
Where you sell decides sizes, units, seasons and returns. We work from Bengaluru and have no overseas office, so for a new country we start from your own sales and the platforms you already use.
Simple filters are sold everywhere
A non-electric filter is easy to post but faces strong local competition. Where it may travel is to Indian households that want the familiar gravity filter, so look at your own orders first.
What the filter may be called
Words like purifier and filter carry different legal meaning in different countries. Your adviser confirms how the product may be described abroad.
FAQ
Questions about selling water filters online.
Not here? More answers, or ask on WhatsApp.
Do I need to tell buyers a filter is not a purifier?
How do I sell candles and spares for a filter I do not make?
Is it worth advertising low-priced water filters?
How long is the contract?
How soon will we see results?
Who will actually do the work?
What do you need from us?
What if we are not happy with the work?
More in Water Purification
Sellers of water filters also need
Also selling from a shop, a workshop or a warehouse? See the page for water treatment solutions providers.
This page is part of the e-commerce section. The D2C brands page covers the arithmetic of acquisition cost and the second order for any brand.
Why us
Why owners pick GullySales over an agency.
Marketing and sales, as one job
Most agencies stop at the enquiry. We also fix what happens after it: the reply, the follow-up, the quote and the CRM.
The person on the first call does the work
No account managers in between. You are never handed to someone you have not met.
A baseline before anything starts
Your numbers are written down on day one, so every later report compares against something honest.
The fee in writing, split three ways
Our time, your media spend and production on separate lines. You always see what goes to us.
No guarantees we cannot keep
The term is agreed in writing and never a default twelve months. We never promise a ranking or a lead count, because nobody controls those.
One office, and we say so
Nagarbhavi, Bengaluru. We work across India by call and WhatsApp and travel when a session needs to be in person.
#257, 3rd floor, Sri Nanjundeshwara Complex, Nagarbhavi 8th Block, Outer Ring Road. How we work.
Engagement options
Ways to work with us.
Pick the size of commitment that fits. Every option starts with the free audit.
Option 1
The audit on its own
A 90-minute call and a written, scored report. It says honestly whether you need outside help, and many fixes are ones your own team can make.
Option 2
One fix, scoped
Start with the fix the audit ranks first, such as reply time or follow-up. The fee is in writing before anything starts.
Option 3
An ongoing programme
We run the work, report against the baseline, and you renew on the numbers. The term and the reporting are agreed in writing first.
Option 4
Guidance for your own team or agency
We plan, brief and check the work of your in-house team or current agency, instead of replacing them.
The offer
Start with a free audit of how your water filters sell.
It is useful on its own, whether or not you hire us.
What you receive
- A 90-minute call with the person who will do the work
- A written, scored report on the six places orders leak
- Every fix ranked by what it returns and what it costs
- The one thing to do first, and why
- An honest line on whether you need outside help at all
- If you do, the scope and the fee in writing
No invoice. No obligation. No sales script.
Your next practical step
Get a free audit of how you sell, and a scored report of where the work is.
90 minutes. A written, scored report. No invoice and no obligation.