Notes for owners · Industry playbooks
Water treatment chemicals: winning contracts with factories, hotels and housing societies
How a supplier of water treatment and cleaning chemicals wins a running contract with a factory, a hotel or a housing society: the first site visit, the dosing routine and the person to call.
The GullySales team · Updated 17 Oct 2026 · 6 min read

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A society secretary reads your rate list and asks what, exactly, it is meant to be compared with. A factory, a hotel or a housing society buying water treatment chemicals is not buying drums. It is buying a visit to its plant, a dosing routine its own operator can follow, and a person to call when the boiler or the sewage treatment plant misbehaves. A rate list offers none of them. So the pitch starts with a visit, puts the routine in writing in general terms, and names the technician. The chemicals come with the arrangement, and the arrangement is what the buyer signs.
Three buyers, and the person who lives with the plant
Each of these buyers has someone who will deal with your chemicals after you leave. Find that person before you find the buyer.
In a factory, it is the utility or maintenance head, and under them the boiler operator or the effluent plant in-charge. What they fear is a stoppage: a boiler tube that scales up, a cooling tower that fouls in summer, or an inspection of their discharge. Purchase signs the order, but the maintenance head decides whether you stay.
In a hotel, it is the chief engineer, who looks after the boiler or heat pumps, the softener and RO plant, the pool, the laundry and the cooling tower on the roof. The fear is a guest complaint about hard water marks, a cloudy pool or no hot water at 7 in the morning. A chain hotel may also have engineering standards set at head office.
In a housing society, it is the facility manager or the contractor who runs the STP, and above them the managing committee. The committee decides in a meeting, with your proposal on the table beside the current supplier's bill. Residents complain about smell and water quality; the committee hears about cost at the general body meeting.
Cleaning chemicals for hotels and offices follow similar logic, and our post on winning the cleaning supplies contract covers that side.
The first visit: what to look at and write down
Go with a notebook and a test kit, not a brochure. Ask the operator to walk you round. Use a visit sheet like this one, and leave a copy with them.
- Equipment on site: boiler type and size, cooling tower, softener, RO plant, STP or ETP, pool
- Source of water: municipal supply, borewell, tanker, or a mix that changes by season
- Current chemicals in use, read from the drums, and how they are added (dosing pump or by hand)
- Readings you can take on the spot with your kit, written down with the date and time
- Visible problems: scale on the sight glass, deposits in the tower basin, smell at the STP
- What went wrong in the last year, in the operator's words
- Who approves a change of supplier, and when they next meet
- Any documents the buyer will want from you: safety data sheets, test reports, vendor forms
The last two lines matter most for the sale. The rest makes your proposal believable.
The dosing routine, written in general terms
Your proposal should describe a routine the site's own operator can run. Keep it plain: which chemical goes where, how it is added, what the operator checks and records each shift or each day, and what your technician checks on each visit. Leave the exact doses and target ranges for the site manual you hand over after testing, not the proposal.
Do not promise that scaling will stop or that the water bill will fall. Discharge and chemical-handling rules differ by state and change. Check with your own adviser or the pollution control board rather than stating a limit in your proposal. A buyer's EHS team will notice a confident claim you cannot back.
The person to call
The third thing the buyer wants is a name. Put the technician's name and mobile number in the proposal, with the area they cover and who stands in when they are on leave. Say what happens if a dosing pump fails: who comes, and how the operator reaches them out of hours.
A small supplier can win here against a larger one. A society secretary may prefer a technician who lives twenty minutes away to a national toll-free number. If you have that technician, show them.
Imagine a Kochi supplier and an apartment association
Imagine, as an invented example, a water treatment chemicals supplier in Kochi with customers among small factories in Kalamassery and a few hotels in the city. It wants apartment complexes, many of which run their own STPs.
The first attempt goes badly. The owner emails a rate list of twelve chemicals to an association secretary in Kakkanad. The committee compares the rates with its current supplier's bill, sees no saving, and moves on. Nobody on the committee could tell what the twelve chemicals were for.
The second attempt starts with the STP operator. The supplier's technician spends an hour at the plant, takes readings, and hears that the smell gets worse every monsoon and that the old supplier's man stopped visiting. The proposal that follows is two pages. Page one is the routine: what the operator does each day, what the technician checks on each visit, and what goes in the log. Page two gives the technician's name and number, and only then the chemicals and the price. The technician attends the committee meeting with the operator.
The committee agrees to a trial period on the STP alone, at a lower value than the supplier had hoped, and the first month's visits cost more in the technician's travel than the chemicals earned. The rate list was never the problem. Nobody had shown the committee what it was paying for.
When the full pitch is the wrong pitch
Skip the visit-and-routine approach when the buyer has its own water consultant who sets the dosing. Then you are a chemical supplier, and the right pitch is consistent quality, documents and delivery.
Large plants with an in-house chemist and a formal tender also buy differently; get on their vendor list first. And do not chase sites you cannot reach for a breakdown call. A routine you cannot service loses the contract at the first failure, and the story travels between societies.
Ask three operators for an hour
Pick three sites where you could reach a breakdown call quickly, and ask for an hour with the operator, not the buyer. Carry the visit sheet. A case study from a site you already service, shared with that customer's permission, is the best thing to hand over. The chemicals hub covers the wider trade. If you want help building the visit sheet, the routine and the two-page proposal into your sales process, tell us what you need.
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