307 WhatsApp leads in Kannur at ₹88.88 each, in a 60-day push for a water purifier brand

A water purifier brand selling in three parts of Kerala wanted serious enquiries and direct sales, not just attention. Over a 60-day push from 1 July to 31 August 2026, we split its Meta campaigns by district and gave buyers two ways to respond: a WhatsApp chat or an instant form.

The campaigns reached 410,288 people on a total ad spend of ₹91,994.29. In Kannur, they brought 307 WhatsApp leads at ₹88.88 each. Because every district was run and measured on its own, the brand can now see what each area costs, rather than one blended figure for all three.

At a glance

The client

Our client makes and sells water purifiers and filtration systems. It sells in three areas of Kerala: Kannur and Wayanad in the north of the state, and Kochi in the centre.

Nobody buys a purifier on a whim. It is installed in the home and needs servicing for years after the sale, so a buyer is really choosing a long relationship with a brand, not just a box. Before they decide, most people want answers to a few practical questions. Which system suits the water in their home? What does installation involve? And who will look after the purifier once it is fitted?

That is why the buying journey in this category usually starts with a question rather than a purchase. A buyer sees an ad, gets curious, and wants to talk to someone or be called back. Only after that conversation does a sale become likely.

The challenge

The brand's aim for the 60 days was high-intent enquiries and direct sales of its purifiers and filtration systems in the districts that mattered most to it. This was a scaling phase, so the question was not only whether ads worked, but where more money would work best.

The three areas are very different places to sell in. Kochi is a city. Wayanad is a hill district. Kannur lies on the northern coast. Put all three into one campaign and the results run together. The brand would see an overall cost per lead, but it would not know which district was responding, or how to divide its budget between them.

The buyers are different too. Some want to ask a question straight away. Others would prefer to leave their number and take a call at a time that suits them. A campaign that offers only one way to respond quietly loses everyone in the other group.

A common shortcut in this category is to run a single lead form across a whole region and judge it on cost per lead alone. That misses both problems at once: it hides the differences between areas, and it gives the chat-first buyer no easy way in.

What we did

Split by district

We ran full-funnel Meta campaigns across 78 campaign sets, and we segmented the instant lead forms by district. That way, each district's results could be read on their own.

This is the step that makes everything else measurable. Once Kannur, Wayanad and Kochi each have their own numbers, the brand can compare them fairly and move budget towards the areas that respond best.

Two routes in

We set up local direct-to-WhatsApp messaging funnels for the people who wanted to talk now. Alongside them, instant lead forms served the people who preferred to leave their details and wait for a call. The two ran side by side throughout.

For a product with this many questions attached, giving people a choice matters. The chat-first buyer gets an answer quickly. The busy buyer can register interest in a few taps and be called later. Neither has to fit a route that does not suit them.

The whole funnel, not just the form

We ran the campaigns full-funnel rather than as lead forms on their own. Full funnel means there are ads for every stage, from people seeing the brand for the first time to the moment they get in touch. Over the 60 days, the campaigns reached 410,288 people and delivered more than 1.55 million impressions, the number of times an ad was shown, on a total ad spend of ₹91,994.29.

A purifier is a considered purchase, so most people will not enquire the first time they see an ad. Staying visible across the period gives them time to think, and keeps the brand in mind when they are ready.

The results

Because the campaigns were split by district, each area now has a cost of its own. Kannur's WhatsApp leads came in at ₹88.88 each. In Wayanad, a conversation cost a little more, between ₹92.55 and ₹106.14.

That gap is useful information. It lets the brand set a fair budget for each district instead of applying one rate to all three, and it shows where each extra rupee is likely to work hardest.

Why it worked

A WhatsApp lead is already a conversation. A form gives the brand a name and a phone number. A WhatsApp lead has usually asked something already. For a product that comes with as many questions as a purifier, that head start moves the sale along, because the first answer can be given while the buyer is still interested.

Local campaigns suit a product that needs local service. Someone buying a purifier wants to know that installation and repairs are close at hand. Campaigns run district by district present the brand as a business that works in the buyer's own area, not a seller far away.

Each district could be judged on its own. Splitting the work into separate districts turned one blurred total into clear figures for each place, which is what a brand needs when it is deciding where to grow.

We took the same area-by-area approach with an elder care service in Kochi and with a gadget repair chain in Oman, where every outlet had campaigns of its own.

Sell one district at a time, and let each district's numbers speak for it.

How to apply this to your business

• If you sell in more than one district or town, give each one its own campaign, so its cost is visible.
• Compare areas on their own figures before you move budget, rather than relying on an overall average.
• Offer both a WhatsApp chat and a short form, so people who want to talk and people who want a call back are both served.
• Make sure someone replies to WhatsApp messages quickly, because a fast answer keeps the buyer interested.
• Mention installation and after-sales service in your ads, since these are the questions buyers of home products ask first.
• Keep the brand visible across the whole period, not only with lead ads, so people who need time to decide still remember you.

Questions business owners ask

Is WhatsApp or a lead form better for selling water purifiers?

Use both. A WhatsApp lead has usually started a conversation already, which helps with a product that raises questions. A form suits people who would rather be called back later. In this campaign the two ran side by side, and Kannur alone brought 307 WhatsApp leads at ₹88.88 each.

Why split Meta campaigns by district?

Because districts behave differently. A city, a hill district and a coastal district will not respond in the same way or at the same cost. In this case, splitting by district showed that a conversation in Wayanad cost between ₹92.55 and ₹106.14, a little more than a Kannur WhatsApp lead.

How much does it cost to advertise a water purifier brand on Meta?

It depends on your areas and your offer. Here, a total ad spend of ₹91,994.29 over 60 days reached 410,288 people across 78 campaign sets. The more useful figure is the cost per lead or conversation in each district, because that is what tells you where to spend next.

Selling across more than one district? Book a 20-minute call.