• Identifying Leaks

    Discover and deal with leaks swiftly. Our expert drainage team are on-call 24/7 for efficient identification and resolution.

    Leaks can appear anywhere in your drainage system. Do not overlook a problem that could point to poor drainage. Call us immediately.

Watch Chris remove plastic debris from a factory drain using a drain jet wash.

How we identify and repair leaks

Drain unblocking company
When called out to a leak or suspected leak our engineer will assess the problem and decide upon the safest and most effective method of repair.

We may use CCTV drain surveys to address the root of the problem, providing real-time footage of the drainage interior. This will allow us to pinpoint any cracks, blockages, or leaks.

Pressure testing can also detect leaks. By pressurising the drainage system, drops in pressure can be located and often will point to leaks or weak points.

We employ various methods of leak repair, though the exact method will depend on how severe the leak is.

Patching drains with minor leaks will often be enough to get them in proper working order. However, for tougher leaks, it may be appropriate to reline a drain with a flexible lining inserted into the existing pipe.
Failing this, we may undertake a drain excavation to replace the affected area with a new drain pipe entirely.

For your peace of mind we aim to attend all blocked drains within a 2/3 hour window to get you back in your flow.

Watch Chris remove plastic debris from a factory drain using a drain jet wash.

Fully Qualified Engineers

Repairing leaks across the SE of England.

Safe, Effective Methods

Repairing a leaky drain in the wrong way can cause significant damage and repair bills. We have high-end solutions to ensure the best quality service for you.

Internal Leaks

We have all the tools and know-how to deal with internal leaks within your drainage system that may be hard to identify.

External Leaks

Immediate on-site resolutions to external drain leaks that adapt to the problem and solve it as fast as possible.

Repairing 95% of leaks on our first visit.

It is rare we attend a leaking drain we have inadequate tooling for; it's so rare it accounts only for roughly 5% of our calls. In the majority of instances you get a first time fix, with remedial works to prevent further recurrence. Saving you money.

How to spot a leak

Water stains or puddles
Check the area around your drains, especially under sinks, toilets, and shower/bathtub areas, for any water stains or puddles that appear even when the fixtures are not in use.

Musty odours

Persistent musty or unpleasant odors near drains can indicate standing water or leaks within the drain system.

Slow drainage

If water takes longer than usual to drain from sinks, bathtubs, or showers, it could be a sign of partial blockages caused by leaks or damaged pipes.

Mould or mildew growth

Excessive moisture from drain leaks can promote mold and mildew growth on walls, floors, or ceilings adjacent to the drains.

Unexplained increase in water bills

A sudden spike in your water bill without an obvious reason may indicate a hidden leak within your drain system.

Discolouration on walls or ceilings

Yellow or brown stains on walls or ceilings, especially around drainpipes, may be indicative of water leaks.

Unusual sounds

Gurgling or bubbling noises coming from drains when using water fixtures may suggest a leak or air escaping from damaged pipes.

Who We Work With


Local Council

Commercial Enterprise

Commercial Property Development

Investment Companies

Property Management & Estate Agency

Government & Quango

NHS & Private Healthcare


Warehousing & Distribution Parks

Food and Beverage Production

Retail & Shopping Centres

Proven Expertise

We are trusted by the public, government, SME and corporations.

The Importance of Hygiene

If your facility produces food, our vehicles and equipment are kept clean and well maintained. Our staff regularly use hand sanitisers and barrier creams which are replaced throughout the day. Fresh PPE is used on each project we attend. 

High Risk Areas

Our teams are used to accessing sensitive areas and have been security vetted many multiple times. If we have to access a high risk area, such as an airport airside facility, you can count on us to adhere to the rules.

Supporting Vulnerable Individuals

If we are attending a property with vulnerable occupants, their needs will be of vital importance to us. If the client is elderly or frail, we will explain with patience and care the situation and resolve the issue with utmost priority. If required, we will liaise with family members or care agencies at every step of the way.


Expert diagnosis & swift resolution of all blocked drains. Serving residential and commercial clients.

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We have seen every type of blocked interior drain, providing an efficient & affordable service.

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We will fix any drain that is leaking, in any location of your property, inside & out on our visit.

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Drain Maintenance

We provide all manner of drain repairs, whether to an appliance, toilet, bath or shower.

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Have a new drain to install? We can provide a full excavation and installation service.

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Cost-effective, non-invasive drain repairs, eliminating the need for costly digging services.

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Keep your drainage system clear and clean, free of faults.

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We maintain all public and private storm and aco drainage systems.

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We maintain all manner of sewers on public & private estates.

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Tanker Services

Quick turnaround septic tank emptying at affordable prices using our own fleet vehicles.

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Cesspit emptying for all types of residential, commercial and events companies.

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Tank Cleaning

We don't just empty septic tanks and cesspits, we clean and maintain them too.


Efficient CCTV drainage surveys for clear insights. Detect issues and prevent disasters.

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If you're not sure of the location of a drain & require a map or schematic, we got you covered.

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Buying a home is not a big risk, if you know everything about it. Don't forget your drainage!

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Let's Get The Flow Going
Get A Quote Now!

Do not hesitate to contact us with any queries.

Phone, email or LiveChat, you are one step away from complete peace of mind.

Call Us Including For Out Of Hours Emergencies

Phone: 0800 141 3599

Frequently Asked Questions

When should I have my drains assessed for leaks?

If you are concerned that your drains are leaking, you should call Grey-Water immediately. The integrity of your drainage system should be maintained at all times so if you suspect a leak, action must be taken. Aside from any immediate concern, it is wise to have your drains inspected regularly to prevent leaks in the future.

How long does it take to repair a leak?

Depending on the size and location of the leak, the repair time can take as little as a few minutes, or as much as a few hours. It may be as simple as patching a leak or employing a flexible liner, but if a leak is rather large or points to further corrosion of a drain, it may need to be excavated and a section could be replaced altogether.

How much does drain relining cost?

The sum total of our relining operations is dependent on a number of factors, such as the extent of the damage that is causing the leak, where it is located, what method is needed to fix the problem, and how long it takes to fix. Our rates generally start at £60.

Do I have to pay in advance for leak repair?

Due to previous experiences, we ask for payment in advance of leak repair once the problem has been identified.

Will any damage be done to my drains whilst a leak is being repaired?

We will never damage your drains when carrying out repairs of any kind. We use state-of-the-art equipment handled by fully-trained professionals to see to the repair or sealing of any leaks in your drains.

Is there a local leak repair service near me?

If you live in the Kent or London area, we have local operatives in your area. We are available to carry out commercial and residential leak repair, depending on what you require. Give us a call and we will provide you with our next available visit date.

Can I repair a leaking drain myself?

Due to the specialist training and equipment needed in order to repair a leak present in a drain, only experts are qualified to undertake this task. With the complexity of some drain systems, and without a proper survey being carried out beforehand, there is no way to know how the drain looks, or how to navigate it in order to locate the leak. Talk to us today and find out how we can save you stress and money with our experienced staff.

Drainage Unblocking Services In London
We cover drain unblocking in the following areas of London:
Herne Hill

Our London Drainage Services cover the following London post codes: 

East London:
E1, E1W, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11, E12, E13, E14, E15, E16, E17, E18, E20, E77, E98

West London:
W1A, W1B, W1C, W1D, W1F, W1G, W1H, W1J, W1K, W1S, W1T, W1U, W1W, W2, W3, W4, W5, W6, W7, W8, W9, W10, W11, W12, W13, W14

South East London:
SE1, SE1P, SE2, SE3, SE4, SE5, SE6, SE7, SE8, SE9, SE10, SE11, SE12, SE13, SE14, SE15, SE16, SE17, SE18, SE19, SE20, SE21, SE22, SE23, SE24, SE25, SE26, SE27, SE28

South West London:
SW1A, SW1E, SW1H, SW1P, SW1V, SW1W, SW1X, SW1Y, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20

TW1, TW2, TW3, TW4, TW5, TW6, TW7, TW8, TW9, TW10, TW11, TW12, TW13, TW14, TW15, TW16, TW17, TW18, TW19, TW20

Don't see your post code?
No problem. Give us a quick call to see if we are in your area today Tel: 0800 141 3599 / Out of Hours Emergency: 07734 965 564
Drainage Unblocking Services In Kent

We cover drain surveys in the following areas of Kent:










Tunbridge Wells

Our Kent Drainage Services cover the following post codes: 

BR1, BR2, BR3, BR4, BR5, BR6, BR7, BR8

DA1, DA2, DA3, DA4, DA5, DA6, DA7, DA8, DA9, DA10, DA11, DA12, DA13, DA14, DA15, DA16, DA17

TN8, TN9, TN10, TN11, TN12, TN13, TN14, TN15, TN16,TN17, TN18, TN23, TN24, TN25, TN26, TN27, TN28,TN29,TN30

CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8, CT9, CT10, CT11, CT12, CT13, CT14, CT15, CT16, CT17, CT18, CT19, CT20, CT21

Don't see your post code?

No problem. Give us a quick call to see if we are in your area today Tel: 0800 141 3599 / Out of Hours Emergency: 07734 965 564
Drainage Unblocking Services In Sussex
We cover drain surveys in the following areas of Sussex:

Our Sussex Drainage Services cover the following post codes: 

BN1, BN2, BN41, BN42, BN45, BN50, BN51, BN88,BN3, BN52,BN5, BN6 BN7, BN8, BN9, BN10, BN11, BN12, BN13, BN14, BN91, BN99, BN15, BN99, BN16, BN17, BN18, BN20, BN21, BN22, BN23, BN24, BN25, BN26, BN27, BN43, BN44, 


PO18, PO19, PO20, PO21, PO22

RH6, RH10, RH11,RH77, RH12, RH13, RH14, RH15, RH16, RH17, RH18, RH19, RH20

TN2, TN5, TN19, TN20, TN21, TN22, TN31, TN32, TN33, TN34, TN35, TN36, TN37, TN38, TN39, TN40

Don't see your post code?
No problem. Give us a quick call to see if we are in your area today Tel: 0800 141 3599 / Out of Hours Emergency: 07734 965 564
Drainage Unblocking Services In Surrey
Our Surrey Drainage Services cover the following post codes including some bordering Hampshire locations.

CR0, CR9,CR44, CR90, CR2, CR3, CR4, CR5, CR6, CR7, CR8

GU1, GU2, GU3, GU4, GU5, GU6, GU7, GU8, GU9, GU10, GU11, GU12, GU14, GU17,GU15, GU16, GU17, GU18, GU19, GU20, GU21, GU22, GU23, GU24, GU25, GU26, GU27, GU28, GU29, GU30, GU31, GU32, GU33, GU34, GU35, GU46, GU47, GU51, GU52

KT1, KT2, KT3, KT4, KT5, KT6, KT7, KT8, KT8, KT9, KT10, KT11, KT12, KT13, KT14, KT15, KT16, KT17, KT18, KT19, KT20, KT21, KT22, KT23, KT24

RH1, RH2, RH3, RH4, RH4, RH5, RH6, RH7, RH8, RH9

SM1, SM2, SM3, SM4, SM5, SM6, SM7

TW9, TW10, TW20

Don't see your post code?
No problem. Give us a quick call to see if we are in your area today Tel: 0800 141 3599 / Out of Hours Emergency: 07734 965 564