How to Start a Drainage Business in the UK (2026 Guide)

Why drainage is a strong business to start

Unlike many trades, drainage combines emergency work — which generates immediate cash — with longer-term maintenance contracts that provide predictable recurring revenue. Blocked drains and emergency callouts mean customers do not shop around: they call the first credible result they see. This makes local search visibility an unusually powerful driver of early-stage revenue. At the same time, CCTV drain surveys have become a standard part of property transactions, and commercial premises are legally obligated to maintain their drainage. Both streams build on top of the emergency base. A well-run drainage business with a jetter and camera unit, a professional online presence, and good reviews can be generating £5,000–8,000 per month within the first six months of trading.

Licences and certifications you need

Drainage does not have a single statutory licence like Gas Safe registration. However, several certifications matter for credibility, commercial contracts, and legal compliance.

Waste carrier licence: if your drainage work generates liquid waste, silt, or contaminated material, you must register as a waste carrier with the Environment Agency (or SEPA in Scotland, NRW in Wales). Lower-tier registration costs approximately £154 and covers most standard drainage waste removal. Upper-tier registration is required for larger volumes of hazardous or controlled waste.

Confined spaces certification: if you work in manholes or chambers classified as confined spaces under the Confined Spaces Regulations 1997, appropriate training is a legal requirement. One-day and two-day courses are widely available from PASMA and specialist training providers. This certification is also required by most commercial clients as a condition of their contractor approval process.

CCTV drainage survey training: if you intend to offer CCTV drain surveys, training in the WRc MSCC (Manual of Sewer Condition Classification) system is the industry standard for professional survey reporting. Commercial clients and conveyancers expect MSCC-compliant reports. Several approved training providers offer courses from one to three days.

WaterSafe registration: not mandatory, but strongly recommended if your drainage work extends into plumbing connections. Housing associations and commercial clients increasingly ask for WaterSafe or equivalent registration as evidence of competence to water regulations.

Essential equipment and van setup

The core equipment for a drainage business is a high-pressure water jetter and a CCTV push-rod camera. A van-mounted jetter with adequate flow rate for domestic and light commercial drain clearing costs £3,000–8,000 new. A push-rod CCTV camera system with recording software costs £2,000–5,000. A medium wheelbase van costs £15,000–25,000 for a good used vehicle. Total capital requirements for a sole trader entering drainage from scratch typically run £25,000–40,000 including equipment, van, and working capital. Finance is available on all major equipment items via hire purchase or lease and is widely used in the industry — many operators fund the jetter and camera on finance and buy the van outright.

Van racking for a drainage business should include: a mounted jetter with easy hose access from the rear doors, secure locked storage for the CCTV camera and laptop, PPE storage (confined space kit, waders, high-vis), spare hose nozzles and accessories, and a clean area for paperwork and tablet. Branded van signage is worth the investment from day one — your van is your most visible marketing asset, particularly after completing a job in a residential street.

Insurance requirements

Public liability insurance is essential for any drainage business. The minimum recommended cover is £5 million, and many commercial clients and housing associations require a minimum of £5–10 million as a condition of their contractor approval process. Drainage work — jetting near building foundations, working in shared drainage systems, operating near highways — carries genuine risk of third-party property damage. Do not try to save money by reducing cover below £5 million.

Employer's liability insurance is legally required as soon as you employ anyone, including labour-only subcontractors in many cases. The legal minimum is £5 million. Commercial vehicle insurance must specifically cover specialist equipment mounted on or towed by the vehicle. Tools and equipment cover protects your jetter and camera — both high-value, high-theft items.

Marketing and getting your first jobs

The best early-stage marketing for a drainage business focuses on emergency search visibility, because emergency drain calls are high-intent, time-sensitive, and go to whoever appears first and looks credible.

Google Business Profile: set up and optimise your listing from day one. Use your service area, fill in every field, upload photos of your van and equipment, and start gathering reviews from every completed job. A five-star rating from even ten reviews in your first month dramatically improves click-through rate on local search results.

Google Local Services Ads: the pay-per-lead ad format that puts a “Google Guaranteed” badge above standard search results. For drainage and emergency drain unblocking, LSA is one of the most cost-effective paid channels available at startup because you pay per qualified lead rather than per click. Apply early as the vetting process takes a few weeks.

Checkatrade and rated directories: useful for supplementing emergency search traffic, particularly in areas where competition for Google results is high. Reviews on these platforms build credibility for customers who are comparing options.

Letting agents and property managers: a relationship with two or three local letting agents can generate steady reactive drainage work from managed properties. Call in person in the first month and leave a branded information card with your pricing for standard jobs and a 24-hour emergency contact number.

Pricing drainage work profitably

Emergency blockage callouts typically charge a callout fee of £75–100 for out-of-hours calls, plus the job rate once on site. During business hours, a single callout fee covering the first hour of work is common, with an hourly rate for additional time. CCTV drain surveys are priced by the length of drain surveyed and the report format required — a short residential survey with a digital report runs £150–250; a full commercial survey with MSCC-coded report runs £300–600 or more depending on the system size.

High-pressure jetting for clearing scale, root ingress, or persistent blockages is typically priced at £180–400 for a standard domestic job. Drain lining (no-dig pipe rehabilitation using cured-in-place lining) is priced per metre at £150–300/m and requires specialist equipment — many smaller drainage operators subcontract lining work until volume justifies the equipment investment. Full drain replacement via excavation is priced by the job based on depth, access, pipe diameter, and reinstatement requirements.

Target gross margins of 45–60% on drainage work. The combination of premium emergency rates, high-value CCTV survey and lining work, and recurring maintenance contracts makes drainage one of the higher-margin trades in the UK when properly managed.

Typical earnings for a drainage business

A sole-trader drainage operator working consistently in their local area can expect to generate £60,000–100,000 in turnover per year. Net profit after van costs, insurance, equipment finance, and business overheads typically runs £35,000–60,000 for a well-run sole trader. Taking on a second operative and van materially increases revenue potential; many drainage businesses scale to two or three vans within two to three years if they build their commercial maintenance contract base alongside emergency work. The commercial maintenance contract side is what separates drainage businesses that grow from those that stay at sole-trader level — predictable monthly revenue changes the financial profile of the entire business.

Using job management software from day one

The biggest operational mistake drainage business owners make is managing jobs, quotes, and invoices manually until it becomes unmanageable — and then trying to implement systems while already overwhelmed. Starting with job management software from your first week means every callout is logged, every quote is stored against the customer record, every invoice is tracked, and you can generate a CCTV survey report from your job notes within minutes of leaving the site. Trade2Base is designed for exactly this: fast quote generation on mobile, professional PDF invoices, customer payment links, and automated review requests after job completion — all the administrative infrastructure that lets you focus on the drainage work rather than the paperwork.