Plumbers in Harlow
Leak, burst or no water? Call 01462 506374
Stopcock off first, then pick up the phone. We answer at any hour, every day of the year, and you get a person who can tell you what to do while an engineer is on the way.
Vantage Plumbing and Heating is based in Stevenage, about twenty miles by road from Harlow and roughly twenty six minutes on a clear run. As it happens, Stevenage was the first new town in Britain and Harlow was the fourth, so we spend our working lives in exactly this kind of housing. Gas Safe registered under 956889, 12 months on our labour, company number 13248357.
Vantage Plumbing and Heating covers Harlow from our base in Stevenage. We are Gas Safe registered under 956889, we carry the common parts on the van, and we guarantee our labour for 12 months.
The water is different depending on which end of town you live in
This is a genuinely local detail and most people here do not know it. Harlow is split across two Affinity Water supply zones, and they publish different hardness figures.
The Harlow North zone, reference AF024, has a mean total hardness of 330 mg/l of calcium carbonate, with a range of 265 to 438 across 144 samples taken during 2025, serving a population of 59,492 from the Harlow North Treatment Works.
The Harlow South zone, reference AF094, has a mean total hardness of 310 mg/l, with a range of 265 to 350, serving 41,892 people from the Harlow South Treatment Works. Harlow Common falls in that zone.
Both are Affinity’s published zone figures, not measurements we have taken at your tap. Both count as very hard. And that top end of the Harlow North range, 438 mg/l, is worth taking seriously, because at that level scale forms quickly.
What that looks like in a Harlow house: the plate heat exchanger in a combi furs up, so hot water starts warm and then runs cold while the heating works perfectly. Boilers kettle and bang. Hot water flow rates drop. Thermostatic shower cartridges seize and lose control of the temperature. Immersion elements and cylinder coils coat over.
We fit scale reduction on the cold mains feed where it is justified, keep inhibitor levels right on the heating side, and use decent quality valves. Check your boiler paperwork too, because in water like this many manufacturers expect a scale reducer to be fitted, depending on the boiler and its terms.
Worth knowing as well: Affinity Water supplies the drinking water here, but the wastewater goes to Thames Water, which runs the Rye Meads treatment works serving Harlow. For an Essex town that catches people out, and it matters when you need to know who is responsible for a shared or lateral drain.
A new town built in fifteen years, and what is under the floors
Harlow was designated on 25 March 1947 and master planned by Frederick Gibberd. The population figures tell you how fast it went up: 4,500 at designation, 5,571 in 1951, 17,000 in 1954, 37,000 in 1957, 54,000 in 1961 and 78,000 by 1971.
The practical consequence is that the bulk of Harlow’s housing dates from roughly 1950 to 1965. That is the era of small bore and later microbore heating circuits, original back boilers behind fires, gravity hot water, and steel radiators that have been quietly making magnetite for decades. Gibberd’s own housing mix was mostly two storey houses with private gardens, plus 20 to 30% flats, which is why the town has so much low rise terraced and maisonette stock alongside blocks.
Individual neighbourhoods each have their own quirks.
Mark Hall North was the first neighbourhood completed, in the early 1950s, with its centre at The Stow opening in 1954. Two storey terraces and maisonettes.
The Chantry, early 1950s, by Maxwell Fry and Jane Drew, has flat fronts of coloured render and shallow monopitch roofs. Render fronts and shallow pitches change how anything gets fixed to a wall or taken through a roof, and it is worth thinking about before, not after.
Northbrooks at Little Parndon, 1957, by Powell and Moya, mixes two storey houses with maisonette blocks. Cooks Spinney and Ladyshot add more dense two storey terracing.
Bishopsfield and Charter Cross, 1961, known locally as The Kasbah, is patio housing stepping down a hillside with an underground car park. Dense, tightly packed and awkward for access. If you live there, tell us when you book and we will plan how the kit gets to the door.
The Lawn, 1951, a nine storey point block of 36 flats, was the first modern style residential tower block in Britain. In any block of flats the first question on a repair is which valve serves which dwelling.
Then the later layers. Church Langley was built out through the 1990s between the A414 and the M11, around 3,500 homes by sixteen different housebuilders, which is why the detail varies street by street. Newhall completed a first phase of about 500 houses in 2009, contemporary and highly glazed. Gilden Park started in 2018 with 1,200 homes planned. And Old Harlow is the surviving historic village at the north east, where the genuinely period work is.
Where the stopcock is
In the 1950s and early 1960s stock, the internal stopcock is usually under the kitchen sink or in a hall cupboard, low down and often stiff. In maisonettes and terraces it may be shared with a neighbouring dwelling’s arrangement, so it pays to know which one is yours before you need it.
In flats there is normally an individual isolation point plus a communal one. On The Kasbah and similar dense schemes, service routes follow the building form rather than any obvious logic.
In Church Langley, Newhall and Gilden Park it is normally in a utility area or service cupboard.
In Old Harlow, in the period stock around Churchgate Street and Harlowbury, it is wherever the mains connection first reached the building.
Outside, you’ll find a stop tap housed in a chamber near the boundary. From that boundary in, the pipe and its repairs are yours.
What we get called out for across CM17 to CM20
Burst and leaking pipes. Joints that have failed, pinholes worn through old copper, and splits caused by frost.
Taps, valves and stopcocks. Dripping taps, isolators that have seized, mixer cartridges clogged with scale, and outside taps fitted with proper backflow protection.
Toilets and cisterns. Overflows running all night, failed flush valves, rocking pans, weeping pan connectors.
Radiators and TRVs. Cold radiators, stuck thermostatic heads, radiators off for decorating, and balancing a system that heats one end of a terrace.
Appliance plumbing. Washing machines, dishwashers and fridge feeds, all connected correctly with isolation you can actually get to.
Cylinders and mains pressure. Immersion heaters, thermostats, unvented cylinder servicing with its discharge pipework, and weak flow showing up at the outlets.
Emergencies. No water, a leak you cannot isolate, or water coming through a ceiling into the flat below.
Small jobs are fine. One tap, one valve, one toilet.
Surface water, the Stort, and nine named drainage areas
The River Stort runs along the north of Harlow and forms the county boundary with Hertfordshire. There is a named Environment Agency flood warning area for the River Stort at Harlow, and flood alert areas for the wider Stort and Stansted Brook catchment and for Pincey Brook.
The bigger local story, though, is surface water. The Harlow Surface Water Management Plan covers over 30 square kilometres within the Stort valley and names nine Critical Drainage Areas: Sumners, Kingsmoor, Stewards, Latton Bush, Brays Grove, Netteswell, Victoria Gate, Rivermill and Old Harlow. Brays Grove and Old Harlow have the highest counts of properties at risk. Around 1,680 residential properties are at risk in a 1% annual exceedance probability event, rising to about 2,390 once climate change is allowed for.
Harlow is also not flat. The neighbourhoods were laid out around the contours and green wedges, and Bishopsfield literally steps down a hillside. Changes in level mean a leak upstairs can appear two rooms away downstairs, and it means the lowest property in a run takes the water when a drain surcharges.
If your boiler, cylinder or pump sits at the lowest point in a property in one of those areas, raising or properly isolating it is a sensible piece of housekeeping.
Old pipework we expect to find
Small bore and microbore heating circuits from the original build and from 1970s and 1980s upgrades. Microbore silts up with magnetite far faster than 15mm, and cold radiator bottoms follow. That is the classic case for a proper power flush and a magnetic filter rather than a chemical dose.
Back boiler legacy. Plenty of Harlow houses still show where a back boiler sat behind the fire. Converting from that to a modern system or combi boiler is a two day job, not a one day swap.
Imperial copper in original 1950s work, which needs adaptors to meet metric fittings. We carry both.
Lead supply pipes in the older Old Harlow stock, usually as the incoming main. The private section running from the boundary inward gets renewed by us.
Winter, and where Harlow pipes split
Loft runs with insulation laid under the pipework rather than over and around it. Extremely common in this stock, where lofts were insulated long after the pipes went in.
Garages, stores and drying areas, unheated and often carrying a feed to an outside tap.
External wall chases, particularly in extensions and later conversions where there is very little between the copper and the weather.
Outside taps lacking an internal isolator or any way to drain down before frost hits.
If a pipe has already frozen, turn the water off, keep flames away, and call. More often than not, the split only becomes obvious once the thaw sets in.
Conservation areas, including a 1950s one
Harlow has ten conservation areas, and this is the point that surprises people: they cover both the medieval village cores and a new town neighbourhood. The list is Churchgate Street, Harlow Garden Village Estate, Harlow Mill and Old Road North, Harlowbury, Mark Hall North, Netteswellbury, Old Harlow, Puffers Green, Town Park Netteswell Cross and Tye Green.
Mark Hall North was designated in 1987 and amended in 2022, so conservation area consent can bite on a 1950s terrace here. Flue terminations, external condensate runs and outdoor units in any of those areas need proper consideration and, where relevant, consent from Harlow Council, with listed building consent on top where the building itself is listed. Internal plumbing is generally unaffected.
Trusted & Accredited Professionals
Genuine 24/7 emergency cover
Round the clock means a person answers, an engineer is allocated and you get a realistic time rather than a comforting one, 365 days a year. Fittings, valves, flexible connectors, cylinder parts and pipe all travel with us, so most emergencies get sorted on the first visit. Where a permanent repair needs something we do not have on board, we make the property safe and watertight, explain plainly what it needs and come back to finish it.
Why choose Vantage
Gas Safe registered under 956889, so your gas and heating are handled by the same firm as your plumbing. Stevenage based engineers who work in post-war new town housing every week. Price agreed before we start. A 12 month guarantee on our labour. Round-the-clock emergency cover, every day of the year, no exceptions. Electrical work is carried out by qualified electricians and certificated as part of the job.
Everything else we do in Harlow
- Boiler installation in Harlow Swaps, conversions and back boiler removals, fixed price agreed before we start.
- Bathroom renovation in Harlow Full strip out and refit, including tight terraces and maisonettes.
- Air conditioning installation in Harlow For glazed modern homes and hot upper floors, currently 0% VAT on residential installs.
- Leak detection in Harlow Thermal imaging, acoustic and tracer gas, which matters when the leak is one flat above.
- Power flushing in Harlow Microbore, magnetite and cold radiators, with honest advice on whether you need it.
- Drainage services in Harlow Blockages, CCTV surveys, jetting, repairs and relining.
One number for all of it: 01462 506374.
Areas we cover around Harlow
Old Harlow, Church Langley, Newhall, Gilden Park, Bishopsfield, Netteswell, Great Parndon, Little Parndon, Sumners, Kingsmoor, Stewards, Latton Bush, Brays Grove and Tye Green, plus Roydon, Nazeing, Matching Tye, Matching Green, Hastingwood, Hunsdon, High Wych, Eastwick, Gilston, Sawbridgeworth, Epping and North Weald. We cover CM17, CM18, CM19 and CM20.
Nearby: Plumbers in Bishop’s Stortford · Plumbers in Hoddesdon · Plumbers in Broxbourne · Plumbers in Great Dunmow
Why Choose Vantage?
With a 4.9 rating on Google and more than 700 reviews across Google, Checkatrade and Trustatrader, fully qualified and accredited engineers, transparent pricing, and a 2-year labour guarantee on every job, Vantage delivers reliable, high-quality workmanship you can trust with fast response times, and genuine local service.
- Five-star Google reviews
- Gas Safe Registered No. 956889
- CHAS Registered
- City & Guilds qualified
- Checkatrade approved
- 2 year labour guarantee on every job
- Fully stocked vans most jobs fixed on the first visit
- Established local business with a dedicated office team and multiple qualified engineers
- No job too small
- Transparent pricing with a fixed price provided before any work begins
- 700+ reviews across Google, Checkatrade and Trustatrader, 4.9 on Google
Frequently Asked Questions
How hard is the water in Harlow?
It depends which side of town you are on. Affinity Water’s published figure for the Harlow North zone, AF024, is 330 mg/l of calcium carbonate, and for the Harlow South zone, AF094, it is 310 mg/l. Both are very hard, and both are Affinity’s published zone figures rather than readings we have taken in your house.
Who do I contact about a drain?
Thames Water is the wastewater company here and runs the Rye Meads works serving Harlow, even though Harlow is in Essex. Where a blockage sits in the public sewer, it’s down to the sewerage undertaker to sort out. Affinity Water handles the drinking water side.
Why does my hot water go warm and then cold?
On a combi in water this hard it is usually scale on the plate heat exchanger. Heating works fine, hot water does not. We will confirm it properly and tell you honestly whether cleaning or replacement makes more sense.
My radiators are cold at the bottom. Do I need a power flush?
In 1950s and 1960s stock with small bore or microbore pipework, often yes. Occasionally it’s nothing more than balancing the system or a valve that’s stuck. We will tell you which rather than selling you a flush you do not need.
I live in a 1950s terrace. Does the conservation area really apply to me?
It might. Mark Hall North was designated a conservation area in 1987 and amended in 2022, so new town housing is protected here as well as the old villages. External work like flues and outdoor units needs checking with Harlow Council. Internal plumbing does not.
Do you charge more at night or at the weekend?
Out of hours work carries a different rate, and we confirm what that is before we head out. Nothing is added once we are on site.
Need a plumber in Harlow today?
Call 01462 506374. Emergencies answered 24 hours a day, 365 days a year, and booked work fitted in as fast as we can get to you.