Fitting a new bathroom, replacing a basin, bath or shower, or sorting the plumbing behind a refit? This page connects you with verified, insured plumbers across Havering who handle bathroom plumbing, from Romford and Hornchurch to Upminster and Rainham.

✅ Checked before listing — identity, insurance, trading presence, Gas Safe (where relevant).
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✅ Workmanship guarantee badges on listings — 1, 3, 6 or 12 months

Bathroom plumbing ranges from a single fixture swap to the full plumbing for a refit, so pricing and timescales vary by job — confirm the scope with the plumber before booking.

→ Find a verified Havering bathroom plumber — see the verified list below.

Coverage: RM1, RM2, RM3, RM4, RM5, RM6, RM7, RM11, RM12, RM13, RM14 — Romford, Gidea Park, Collier Row, Harold Hill, Harold Wood, Hornchurch, Elm Park, Upminster, Cranham, Rainham, South Hornchurch and the rural-edge villages.
Bathroom plumbing covered: fitting and replacing basins, taps and mixers, baths, showers and shower valves, toilets and cisterns as part of a refit, bidets, waste and trap work, sealing, and the plumbing first-fix and second-fix for a bathroom installation — including moving or adding a fixture. For bathroom plumbing in Havering, use the verified list above.
Got a single specific job? Go straight to the right page: one dripping or stiff tap → Tap Repair & Installation; a running or leaking toilet → Toilet Repairs; a blocked basin, bath or shower → Blocked Drains; damp or water with no obvious source → Leak Detection. This page is for fitting and replacing bathroom fixtures and the plumbing of a refit.
Costs: see What it costs ↓ for an editorial estimate.

Jump to: What bathroom plumbing covers ↓ · Showers & water pressure ↓ · Hard water & bathroom fittings ↓ · The rules on a bathroom ↓ · By district ↓ · What it costs ↓ · FAQs ↓

What bathroom plumbing covers

“Bathroom plumbing” spans everything from swapping one fixture to plumbing an entire refit. The common jobs:

• Basins and vanity units — fitting or replacing, with the right taps, waste and trap, and connecting into existing or new pipework.
• Baths — fitting a new bath, including the taps, waste, overflow and sealing, and making sure the supply and waste runs work for where it sits.
• Showers — fitting a mixer, electric or pump-assisted shower, the valve, riser and tray or enclosure plumbing — with the shower type matched to your water system (the next section).
• Toilets — fitting or replacing a WC and cistern as part of a refit (a running or faulty existing toilet is a Toilet Repairs job instead).
• Bidets — fitting, with the backflow protection the rules require (more below).
• Waste, traps and sealing — reseating traps, fitting the right waste runs at the correct fall so they drain properly, and sealing baths, basins and trays so they don’t leak behind. Poor waste fall is a common cause of a bath or shower draining slowly after a refit, so it’s worth getting right first time.
• A full refit’s plumbing — the first-fix (pipework roughed in before tiling and boarding) and second-fix (connecting the fixtures once they’re in), plus moving or adding a fixture where the layout changes. Where pipework penetrates boards or tiles, those penetrations are a leak risk if not sealed properly, so good practice is to pressure-test and check wastes under full discharge before signing off.

For a refit, a plumber usually works alongside a tiler, electrician and sometimes a fitter — so it’s worth being clear who’s coordinating the job. If you’ve just bought the place, our new homeowner plumbing guide is a useful primer.

Showers and water pressure

The single most common bathroom mistake is fitting a shower that doesn’t suit the home’s water system — so this is worth getting right before you buy one.

• A mixer shower blends hot and cold and relies on decent, balanced pressure. It works well off a combi boiler or an unvented (mains-pressure) cylinder, but can be weak on an old gravity-fed system with a loft tank.
• An electric shower heats cold water on demand, so it only needs the cold mains — handy where hot-water pressure is poor, but limited in flow.
• A pump-assisted (or power) shower boosts flow on a gravity-fed system, but isn’t suitable — and isn’t needed — on a mains-pressure (unvented or combi) setup.

A verified plumber will check what system you have and what pressure and flow you’re getting before recommending a shower, rather than fitting one that disappoints. It matters in Havering: the right answer depends on whether the home runs a combi, a vented gravity system or an unvented cylinder, and on the incoming mains pressure — see our combi vs system boiler guide for how the hot-water setup affects this. One coordination point: if an electric shower needs a new electrical circuit, or alterations to an existing circuit within the bathroom’s special-location zones around the bath or shower, that’s notifiable electrical work — the plumber should coordinate with a qualified electrician rather than treat it as plumbing-only.⁸

Hard water and bathroom fittings

Havering’s water shapes how bathroom fittings last. Many Havering homes are on a hard-water supply, including Essex & Suffolk Water’s hard-water area, where the company confirms hardness leaves limescale.¹ In a bathroom that shows up as scale on shower heads and screens, furred-up mixer cartridges and aerators, and stiffening taps — and it’s why cheap fittings tend to fail faster here. A good plumber will steer you towards quality, scale-tolerant valves and cartridges, point out that a shower head with rubber nozzles is easier to descale, and may suggest a scale reducer on the incoming main where scale is heavy. Our London hard water guide explains the wider picture.

The rules on a bathroom

A bathroom isn’t a free-for-all — the Water Supply (Water Fittings) Regulations set some specifics worth knowing, both so the job’s done right and so you know what a good plumber is doing.

Fittings must be of an appropriate quality. Under Regulation 4 of the Regulations, water fittings must be of an appropriate quality and standard; in practice that means Regulation 4 compliant fittings, with WRAS (or equivalent, such as KIWA or NSF) approval used as evidence of compliance.²

New toilets have a flush limit. A new WC must not give a single flush exceeding 6 litres, and on a dual-flush the smaller flush must not exceed two-thirds of the larger — so a new toilet fitted in a refit is a modern low-flush design.³

Backflow protection matters on baths, basins and bidets. The Regulations require every water system to contain adequate devices to prevent backflow of fluid into the supply, with the protection matched to the contamination risk of the fitting.⁴ For a bath or shower (usually a lower-risk situation), that’s typically a check-valve arrangement or simply keeping a tap gap so a hose can’t be submerged. A bidet with an ascending spray or hose handset is a higher-risk (fluid category 5) fitting, because the outlet can be contaminated — and according to Water Regs UK it needs fluid-category-5 backflow protection, such as a break tank with a Type AB air gap — not a check valve, which only protects to category 3.⁵ A verified plumber matches the protection to the fitting.

Some bathroom work must be notified in advance. Separately from the backflow rule, certain installations must be notified to your water supplier before the work, including fitting a bidet with an ascending spray or flexible hose, or a bath larger than 230 litres.⁶ A verified plumber fits these compliantly and handles the notification where it’s required.

If you rent, a bathroom in disrepair is normally the landlord’s responsibility. Under Section 11 of the Landlord and Tenant Act 1985, a landlord must keep in repair and proper working order the installations for the supply of water and for sanitation, including basins, sinks, baths and sanitary conveniences.⁷ So report a bathroom problem in a rented home to your landlord or letting agent rather than booking a refit privately.

Find a verified bathroom plumber by district

Havering is an outer-London suburban borough, with many suburban houses alongside flats, maisonettes and newer developments — and bathroom plumbing here reflects the local stock and its hard-water supply. Here’s the local picture.

Romford (RM1, RM2, RM7) — town-centre flats above shops and a wide spread of suburban housing in Gidea Park, Rise Park and Mawneys. In flats and maisonettes, a bathroom refit can mean working around a compact layout and a shared soil stack — so before moving a WC, a plumber will check whether it connects to a shared stack, since that can limit where the pan can go, and where a soil pipe or supply is shared the managing agent may need to give access before pipework is altered.

Hornchurch & Elm Park (RM11, RM12) — Hornchurch and Elm Park include a lot of inter-war-style suburban housing, often with original bathrooms ripe for a refit and older pipework that may need updating as part of the job. Some still run gravity-fed systems, which is exactly where shower-type choice matters most. In these older houses the existing soil-pipe position can make moving a toilet more expensive than keeping the suite in the same layout — worth weighing when planning a refit.

Upminster & Cranham (RM14) — larger suburban homes, often with more than one bathroom or an en-suite, so the plumbing can involve longer runs, a second WC or basin, and balancing hot-water demand across more fixtures.

Rainham, South Hornchurch & Beam Park (RM13) — older stock beside new-build Beam Park homes. New-builds often have modern, mains-pressure bathrooms where a mixer or electric shower suits; older Rainham stock may need pipework brought up to date during a refit.

Harold Hill, Harold Wood & Collier Row (RM3, RM5) — post-war estate housing, maisonettes and flats, with a mix of owner-occupied and rented homes, often compact bathrooms with boxed-in pipework. In maisonettes and flats, a failed bath waste or poor seal can show as staining in the unit below, so access panels and full-discharge testing matter.

Gidea Park, Emerson Park & the rural edge (RM2, RM4) — larger detached houses, often with multiple or larger bathrooms and more involved plumbing. Out toward Havering-atte-Bower, Noak Hill, Corbets Tey and North Ockendon, rural-edge homes can have older or extended plumbing with longer hot-water runs, so a verified plumber will check what’s there before quoting a refit.

If you’re near the Romford / Barking & Dagenham boundary at Rush Green, confirm your postcode is RM and within Havering before booking.

What it costs

The figures below are an editorial estimate only, to help you sense-check a quote — they are not regulated rates, not market data, and not a published cost survey. Always confirm the price before work starts, and see how to read a plumbing quote and our London plumbing costs guide.

A full bathroom refit’s total cost is much higher once tiling, electrics and fittings are included — the range above is the plumbing element only. Havering is outside the central London Congestion Charge zone, but like every Greater London borough it sits inside the London-wide Ultra Low Emission Zone (ULEZ), which the TfL ULEZ scheme operates across all London boroughs (excluding the M25 itself). A non-compliant vehicle may incur the daily charge, so it’s reasonable to ask whether any emissions-zone charge is included in a quote.⁹

When you contact a plumber from this directory, you can ask about availability, whether they handle just the plumbing or coordinate the whole refit, whether fittings are supplied or supply-only, and whether the shower you want suits your water system — you’re not obliged to proceed until you’ve agreed the scope. VerifiedPlumbers is a directory that connects you with verified plumbers; it doesn’t carry out the work itself.

Frequently asked questions

Related services in Havering

• Tap Repair & Installation in Havering — a single dripping, stiff or new tap
• Toilet Repairs in Havering — a running or leaking toilet
• Blocked Drains in Havering — a blocked basin, bath or shower
• Leak Detection in Havering — damp or water with no visible source
• All plumbing services in Havering — the full directory

Related guides

• New Homeowner Plumbing Guide — the basics of your home’s plumbing
• London Hard Water Guide — why Havering’s hard water furs up bathroom fittings
• Combi vs System Boiler — how your hot-water setup affects showers
• How to Read a Plumbing Quote — what a refit quote should itemise

A bathroom is one of the more involved plumbing jobs in a home — part fixtures, part pipework, and part getting the details right so it lasts: a shower matched to the water system, quality fittings that stand up to Havering’s hard water, and the regulations met on flush volumes and backflow. The verified plumbers listed above handle bathroom plumbing across the Havering RM postcodes listed above, each one checked for identity, insurance and, where they work on gas, Gas Safe registration.

↑ Find a verified Havering bathroom plumber — see the verified list above.

← Back to all plumbing services in Havering

Last reviewed: May 2026 by Adiel Khan — SFEDI-accredited business advisor, 20+ years’ experience (South East Enterprise Ltd) and operator of VerifiedPlumbers. LinkedIn ↗

This page is checked for compliance and regulatory accuracy against the bodies and regulations cited on it — the Water Supply (Water Fittings) Regulations 1999, WRAS, Water Regs UK, the Building Regulations (electrical work, Part P), Essex & Suffolk Water, the Landlord and Tenant Act 1985 and Transport for London. Source links are provided within this page where relevant.

Sources & further reading

1. Essex & Suffolk Water — Hard water (confirms a hard-water supply area; limescale forms from hard water). https://www.eswater.co.uk/hardwater
2. The Water Supply (Water Fittings) Regulations 1999, Regulation 4 (water fittings must be of an appropriate quality and standard; WRAS or equivalent approval used as evidence of compliance). https://www.legislation.gov.uk/uksi/1999/1148/regulation/4
3. The Water Supply (Water Fittings) Regulations 1999, Schedule 2 (WCs and flushing devices) (a single flush must not exceed 6 litres; a dual-flush lesser flush must not exceed two-thirds of the largest). https://www.legislation.gov.uk/uksi/1999/1148/schedule/2/part/crossheading/wcs-flushing-devices-and-urinals
4. The Water Supply (Water Fittings) Regulations 1999, Schedule 2 (Backflow prevention, paragraph 15) (every water system shall contain an adequate device or devices for preventing backflow of fluid from any appliance, fitting or process). https://www.legislation.gov.uk/uksi/1999/1148/schedule/2/crossheading/backflow-prevention/made
5. Water Regs UK — Backflow protection for bidets (a bidet with a hose handset or ascending spray is a fluid category 5 risk and must be supplied via a fluid category 5 backflow arrangement, e.g. a break tank with a Type AB air gap; double check valves protect only to category 3). https://www.waterregsuk.co.uk/topics/all-faqs/bidets/
6. The Water Supply (Water Fittings) Regulations 1999, Regulation 5 (notification) (certain installations must be notified to the water supplier in advance, including a bidet with an ascending spray or flexible hose and a bath exceeding 230 litres). https://www.legislation.gov.uk/uksi/1999/1148/regulation/5
7. Landlord and Tenant Act 1985, Section 11 (landlord’s duty to keep in repair and proper working order the installations for water supply and sanitation, including basins, sinks, baths and sanitary conveniences). https://www.legislation.gov.uk/ukpga/1985/70/section/11
8. Planning Portal — Electrics: Building Regulations (notifiable electrical work is a new circuit, a consumer-unit replacement, or an addition/alteration to an existing circuit in a special location such as the zones around a bath or shower; other alterations outside special locations are not notifiable). https://www.planningportal.co.uk/permission/common-projects/electrics/building-regulations
9. Transport for London — Ultra Low Emission Zone (ULEZ operates across all London boroughs, excluding the M25; daily charge for non-compliant vehicles). https://tfl.gov.uk/modes/driving/ultra-low-emission-zone