Plumbing for business premises — restaurants, cafés, shops, offices, salons and light-industrial units — where downtime costs money and food premises carry a legal duty on grease. Verified plumbers covering Newham (E6, E7, E12, E13, E15, E16, E20) — listed below.

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✅ Workmanship guarantee: 1–12 months depending on the job and the plumber.

Commercial work is priced by the job and the premises — a tap or a leak is quick, a kitchen fit-out or a grease-management install is a project. Many plumbers quote per visit or per contract. Confirm scope and price before booking.

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VerifiedPlumbers is a directory: you choose a plumber below and contact them directly. We don’t attend, quote or carry out work, and availability is set by each plumber — ask when you call.

Coverage: Stratford, Stratford City, East Village, West Ham, Plaistow, Upton Park, East Ham, Forest Gate, Manor Park, Little Ilford, Green Street, Canning Town, Custom House, Beckton, Royal Docks, Silvertown, North Woolwich, West Silvertown, Maryland, Gallions Reach, Cyprus, Plashet, South Beckton and Temple Mills — covering E6, E7, E12, E13, E15, E16 and E20.

What this covers: plumbing for non-domestic premises — leaks and repairs, washroom and kitchen plumbing, commercial drainage, grease management for food businesses, water-efficiency and tap/cistern work across a building, fit-outs and reactive maintenance. The sections below cover what’s different about commercial work, and the grease duty that matters most in a food-heavy borough.

Routing: this is for business premises. A repair in a home — even a rented one — is covered on the relevant domestic page, such as general plumbing, leak detection or blocked drains.

Jump to: What’s different about commercial work · Grease: a legal duty for food premises · Trade effluent and water efficiency · Find a verified plumber by area · What it costs · FAQs

What’s different about commercial work

Commercial plumbing is judged on two things a home job isn’t: downtime, and compliance.

For a business, a failed water heater, a blocked commercial drain or a leak across a shop floor isn’t just inconvenient — it can stop trade, so commercial work is often about fast reactive repair and planned maintenance that prevents the failure in the first place. And a business premises carries obligations a home doesn’t: drainage that meets commercial standards, water fittings that comply, and — for anyone handling food — a legal duty over what goes down the drain. A plumber working on commercial premises needs to understand both the urgency and the rules.

The water is the same hard supply as the rest of the borough — Thames Water classes all its supplies as hard — but at commercial scale that bites harder than at home.¹ A café running dishwashers all day, a salon’s water heaters, a launderette’s machines — equipment that cycles hard water continuously scales up far faster than a domestic kitchen, and in a borough this dense with small food and service businesses that’s a steady, predictable maintenance cost a commercial plumber can plan descaling around rather than wait for a breakdown.

Grease: a legal duty for food premises

For any food business, fat, oil and grease isn’t just a blockage risk — it’s a legal responsibility.

Thames Water sets out that it’s a criminal offence under Section 111 of the Water Industry Act 1991 to release anything into the public sewers that could interfere with the free flow of wastewater — which includes the fat, oil and grease from a commercial kitchen.² Its guidance is that drainage serving a commercial hot-food kitchen should be fitted with a grease separator to BS EN 1825, or other effective grease management; and under Section 59 of the Building Act 1984 a local authority can require a grease trap to be installed.² The stakes are real: grease problems that breach the food hygiene rules can lead to prosecution or an emergency prohibition order closing the premises.²

That duty bites harder in Newham than in many boroughs. The borough has a dense food economy — Green Street and Queen’s Market alone sit among cafés, restaurants and stalls selling fresh fish, seafood, meat, fruit and vegetables, the council describes — and it sits on a low-lying drainage network the council’s surface-water management plan identifies as already under pressure, with thirteen Critical Drainage Areas and around 17,500 homes at flood risk in an extreme rainfall event.³ On a network like that, a café without proper grease management isn’t just risking its own drains. A commercial plumber can size and fit a grease separator or trap and set up the maintenance that keeps it working.

On a grease-related callout, the useful checks are practical ones: whether the sink line is slow before or after the trap, whether floor gullies are backing up, whether dishwasher discharge is overwhelming the waste run, whether the grease separator has been emptied and maintained, and whether there is rodding or chamber access before CCTV is needed. If the same blockage keeps returning, the plumber should check whether the problem is inside the premises, in a private shared run, or further downstream.

Trade effluent and water efficiency

Beyond grease, two other commercial points come up.

Trade effluent. A restaurant, café or takeaway does not normally need a trade effluent consent — its wastewater isn’t classed as trade effluent. But a premises whose process discharges genuine trade effluent — food processing, a laundry, a car wash, certain manufacturing — does: under Section 118 of the Water Industry Act 1991 it’s an offence to discharge trade effluent to the public sewer without the water authority’s consent.⁴ If your process produces more than ordinary washroom and kitchen waste, a commercial plumber and your water retailer can tell you whether a consent applies.

Responsibility can also be different in a commercial unit. The business is usually responsible for internal pipework and the drainage serving its own premises, but shared runs, landlord-controlled services or sewer-side problems may involve the freeholder, managing agent, commercial landlord or Thames Water. In leased units, the lease often decides who can authorise work on shared drainage or communal services, so a plumber may need to identify the fault and provide evidence before the repair can go ahead.

Water efficiency. Across a commercial building, small inefficiencies multiply — a row of leaking urinal cisterns, dripping taps in staff washrooms, or an uncontrolled urinal flush can run up a metered bill fast. Commercial plumbers fit controls, isolation and efficient fittings that cut standing water use, which on a metered commercial supply pays back quickly.

Frequently asked questions

Related plumbing services in Newham

• Blocked Drains in Newham — drainage, including the fat-oil-grease problem.
• Kitchen Plumbing in Newham — a domestic kitchen rather than a commercial one.
• Leak Detection in Newham — a hidden leak in any premises.
• General Plumbing in Newham — domestic small jobs and repairs.

See all verified plumbing services in Newham →

Related guides

• London Plumbing Costs & Compliance Guide 2026 — what plumbing work should cost.
• London Hard Water — The Complete Homeowner & Landlord Guide 2026 — why fittings and heaters scale up in Newham.
• How to Read a Plumbing Quote — A London Homeowner’s Guide 2026 — checking a commercial quote.