Water Purifier (RO) Service Business
आरओ वाटर प्यूरीफायर सर्विस व्यवसाय · आरओ वॉटर प्युरिफायर सर्व्हिस व्यवसाय
Service and repair household RO water purifiers: change filters and membranes, fix leaks and pumps, and sell annual maintenance contracts.
Investment
₹1.5 lakh
Profit a month*
₹13,000
- Space
- 100 sq ft
- Staff
- 1 + you
*Operating profit before the loan instalment in year 2, at the assumed sales level. Change the assumptions in the calculator below.
An RO service business maintains household and small commercial water purifiers. The work is routine: changing sediment and carbon filters every few months, replacing the membrane when output drops, and fixing pumps, adapters, taps and leaks. It is done at the customer's home with a bag of tools and spares, so it can be run from home with a two-wheeler. Every purifier needs service two or three times a year, which makes this a repeat business built on a customer list and annual maintenance contracts. The profit shown assumes the owner is a working technician. The hard parts are building the first few hundred customers, cheap spares of doubtful quality in the market, and brand service networks and apps competing for the same calls.
Skills needed: Basic plumbing and electrical skill; RO fault-finding learnt in a few months with a service technician or a short course.
Profit calculator
Change the numbers to match your town3 visit/day: Service visit with filter change (average)
Total investment
₹1.5 lakh
Your own money
₹15,002
Subsidy
—
Bank loan
₹1.35 lakh
Mudra Kishore
A typical month in year 2
| Sales | ₹70,200 |
| Raw material & packing | −₹35,100 |
| Electricity | −₹325 |
| Salaries | −₹12,600 |
| Rent | −₹3,150 |
| Other running costs | −₹6,300 |
| Operating profit | ₹12,725 |
| Loan instalment (EMI) | −₹3,148 |
| You keep each month | ₹9,577 |
After the loan is repaid, the EMI becomes your income too. Your own salary is not counted as a cost: the profit is your income.
Need this for a bank loan?
Turn these numbers into a full project report: cost of project, means of finance, 5-year profit and loss, balance sheet, repayment schedule, DSCR and break-even.
Make my project reportInvestment breakdown
| Machinery & equipment | Price |
|---|---|
| Tool kit, TDS meters, pressure gauge and spanners | ₹10,000 |
| Used two-wheeler | ₹45,000 |
| Spares rack and small counter | ₹20,000 |
| Smartphone or computer for customer records and reminders | ₹20,000 |
| Shop front with display of new purifiersadd-on | ₹60,000 |
| Machinery & equipment (without add-ons) | ₹95,000 |
| Registrations | ₹2,000 |
| Stickers, visiting cards and local advertising | ₹8,000 |
| Working capital 25 days of raw material, 2 days of credit to buyers, 1 month of expenses | ₹45,024 |
| Total project cost | ₹1,50,024 |
Typical market prices as of October 2026, from supplier listings. Prices vary by brand, capacity and city; always get 2–3 quotes.
Cost and margin per unit
| Service visit with filter change (average) (per visit) | ₹ |
|---|---|
| Filters, membrane, fittings and other spares at trade price, averaged per visit | 450.00 |
| Material cost | 450.00 |
| Selling price | 900.00 |
| Margin before running costs | 450.00 (50%) |
Average bill. A provider's 2026 guides give ₹350–600 for a visit, ₹900–1,650 for a filter set, ₹1,500–2,500 for a membrane and ₹2,500–6,500 a year for an AMC. The trade cost of spares is an assumption.
Space, power and staff
100 sq ft
At home · rent ≈ ₹3,000/month
A room at home or a small rented store for spares in a small town.
1 kW, single-phase
Bill ≈ ₹500/month at full capacity
1 staff + you
- 1 × Service technician: ₹12,000
Licences and registrations
Shop and Establishment registration
if applicableWhen: When you open a shop or hire staff · Cost: Small fee; varies by state
GST registration
if applicableWhen: When turnover crosses the registration limit · Cost: Free
Confirm with a CA.
Udyam registration
recommendedWhen: Before applying for a loan · Cost: Free
Apply only on udyamregistration.gov.in.
Brand authorisation
if applicableWhen: Before claiming to be a brand's service centre · Cost: As per the brand
Do not use a brand's name or logo without authorisation; say clearly that you are an independent service provider.
How it works
- Take the call and check the customer's last service date.
- Test input and output TDS and flow at site.
- Replace the filters or membrane that are due; fix leaks or faults.
- Sanitise the tank, test again and show the reading to the customer.
- Bill, stick a service label with the date and set a reminder for the next service.
Loan route
Mudra loan (Kishore)
Own money ₹15,002 · Loan ₹1.35 lakh · EMI ≈ ₹3,148
No collateral, no subsidy.
How Mudra worksPMEGP (new units)
Subsidy ₹22,504 (general, urban) to ₹52,508 (special category, rural). EMI ≈ ₹2,623–₹2,099.
Own money 5–10%. Subsidy is held as a 3-year deposit, then adjusted against the loan.
How PMEGP worksAssumes 10.5% interest, 5 years including a 6-month moratorium. PMEGP was approved up to FY 2025-26. Check on the KVIC PMEGP portal that applications are open before you plan around the subsidy.
No collateral and no third-party guarantee (covered by the Credit Guarantee Fund for Micro Units).
Who buys and how to sell
Buyers
- Households with RO purifiers
- Offices, clinics, schools and restaurants
- Housing societies and hostels (bulk AMC)
- Shops with water coolers and commercial RO units
Ways to sell
- Service stickers on every machine
- Reminder calls and WhatsApp messages
- Google Business listing
- Tie-ups with purifier sellers and plumbers
- Annual maintenance contracts
Season: Steady, with more calls in summer and the monsoon when water quality changes.
Competition: Brand service centres, app-based services and freelance technicians. Showing TDS readings, using good spares and remembering service dates build loyalty.
Risks and how to handle them
Poor-quality spares cause complaints
Buy filters and membranes from reliable distributors and tell customers the brand you fit.
Slow growth of the customer base
Offer a low-priced first service, leave stickers and ask every customer for a referral.
A technician leaves with the customer list
Keep records and reminders in your own phone or software and stay in direct contact with customers.
Leak after service damages a customer's kitchen
Check every joint under pressure before leaving and return promptly for complaints.
Tips from the trade
- AMCs paid in advance smooth out income across the year.
- Selling and installing new purifiers adds income from the same customers.
- A simple spreadsheet of customers and due dates is the most valuable asset in this business.
Questions people ask
How many customers are needed for a steady income?+
Use the calculator with your own rates. As a guide, each purifier needs two or three visits a year, so several hundred regular customers are needed to keep one technician busy.
Can I service all brands?+
Most household RO units use similar standard filters, membranes and pumps, so independent technicians service many brands. Some models use proprietary cartridges available only from the brand.
How much investment is needed to start a water purifier (ro) service business?+
About ₹1.5 lakh for a small unit: ₹95,000 for machinery and equipment, ₹10,000 for set-up costs and ₹45,024 as working capital (stock, credit to buyers and one month of expenses). Prices as of October 2026.
How much profit can a water purifier (ro) service business make per month?+
At 50% of capacity, sales are about ₹70,200 a month and operating profit about ₹12,725 before the loan instalment. After an EMI of about ₹3,148, the owner keeps about ₹9,577 a month until the loan is repaid. These are estimates; your prices, rent and sales decide the real figure.
Can I get a Mudra loan or PMEGP subsidy for water purifier (ro) service?+
With a project cost of about ₹1.5 lakh, the bank loan of about ₹1.35 lakh falls under Mudra Kishore. Mudra has no subsidy. As a new unit you may instead apply under PMEGP, where the subsidy is 15–35% of the project cost (up to about ₹52,508 here for a special-category applicant in a rural area). PMEGP was approved up to FY 2025-26. Check on the KVIC PMEGP portal that applications are open before you plan around the subsidy.
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Sources
- RO Care India: RO service cost price guide 2026
- RO Care India: how much RO service costs in Kolkata (2026)
- RO Care India: RO AMC plans and pricing guide
- Udyam Registration
Prices as of October 2026. Prices here come from online listings and published guides and have not yet been confirmed with local suppliers. Profit figures are estimates from the assumptions above, not a promise of income.
Spotted an outdated price? Tell us. Data for this page: HowIndiaEarns.