Blocked drain in Welwyn? Get it unblocked FAST!
By choosing Happy Drains Welwyn , you can trust that you will be in the best hands. We are number one in Welwyn for clearing blocked drains. We offer great prices for all our Welwyn customers, especially our household customers, for whom we have a fixed price!
Be assured that in Welwyn, your business site will receive tremendous service at the best price. So why would you go anywhere else? Our expert team of 'pro' Welwyn engineers will deliver the best in class service the industry has to offer.

9.72 out of 10


Offering our Welwyn customers top service at an exceptional price is our number one priority. At Happy Drains, our customers recognise that we only use highly trained, experienced, local engineers in Welwyn that we trust. Happy Drains go that extra mile to ensure your drains are left working and happy!

Welwyn Blocked Drain Clearance, Cleaning & Repair
Hertfordshire, AL6


We are the favourite, reputation does matter, read our reviews to see why!
We are the local Welwyn drain clearance business, we know our stuff and we're a friendly service. Family owned and locally based, always available to take care for your Welwyn drainage problems and we're ready when you are.
Once we're on site we'll quickly figure out the issues and get to the heart of your Welwyn drain problem as speedily as we can, fix it right and fix it fast first time, complete with best quality guarantees for you to be assured.
Our Welwyn householders and residential customers get the benefit of a fixed price with guaranteed excellent service and for local Hertfordshire businesses in whatever sector we always offer the very ‘best value’ complete service, call us now for great prices and speedy service.
Before we undertake any works, be assured we'll confirm our price to you to give you both satisfaction and contentment.
Happy Drains, leading the way with great customer feedback...

No fuss. On time. Job done.
"Very easy to organise the appointment to unblock a drain that we had tried and failed to clear ourselves. They were reasonably priced, stuck to their quote, the engineer was very personable, paid for their own parking and explained the issue! That's all I ask from a service company. Thank you Happy Drains."
Unblock outside drain
"We are very happy with the service from first phone call through to the fixing of the problem. Such friendly helpful and professional staff. I will retain the phone number if needed again and certainly will be recommending Happy Drains company. "
Block drain outside was cleared quickly and effectively
"Our engineer was professional and friendly who listened to me explain fully before suggesting what he believed the fix was. He carried out work quickly and came to explain what he'd done and why"
Unblock an outside pipe
"Unfortunately the pipe was blocked with concrete which appears to have happened when the garden fence was erected. However, the tradesman wrote the reason it was blocked on the invoice which helped when I contacted the tradesmen who erected the fence."
Welwyn AL6 emergency blocked drain clearance, cleaning & repair. Fast service assured in Hertfordshire. |

Call 01727 227960
or our office mobile
07824 757572
All Welwyn CCTV surveys include our state of the art Drainify reporting software. Check out the demo:
Is your Welwyn property served by a septic tank or a sewage treatment plant?
If so, are you aware of all the Welwyn area environmental and building regulations?
More importantly, do you know if your Welwyn system is compliant with the new regulatory reform called the Small Sewage Discharge General Binding Rules?
Click the button to find out more...
Repairing defective drains using traditional and ‘Trenchless Technology’ (CIPP)
Our expert Welwyn drain replacement and repair services are the ‘up to the minute’ for improving and fixing damaged drainage systems cost-effectively. These benefits include:
- Lower Costs
- Zero scarring to drives and gardens
- Saves Time
- Saves Money
We always promise to deliver a level of service that you will enjoy and that is guaranteed.
Throughout any works in the Welwyn AL6, we work respectfully and tidily to take care of you and your property. Highest standards are always employed, so you are in the safest of hands.
CCTV technology allowing us to explore faulty pipes, drains and sewers.
If you are buying a Welwyn property or developing a Hertfordshire property or developing a site, its important you understand your drains and how they work. We will identify problems and deliver the most cost-effective repair for defects that get in the way of the free-flowing of your pipework. We offer WRC coding to categorise and score the severity of any problem found, and with that information we are then able to propose the most cost-effective solution to any drain problem found.
We provide a detailed written report including all the relevant and pertinent information you need to make informed decisions, in a way that’s easy to understand and jargon-free with an accurate quotation for the repair that may be required to bring the drain back up to a serviceable standard.
A blocked drain will need to be dealt with, fast.
The last thing you need is flooding, and the associated damage that flooding may cause. A local Welwyn trusted and vetted drainage company we respond fast & efficiently. For environmental and for health reasons, we don't delay, we're ready and waiting.
Our investment in the best tools for the job and in training in the use of high pressure jetting and electromechanical equipment leaves us with experience and knowledge to deal with Welwyn drainage problems - we typically solve the drain problem in just one visit.
Our drainage customers know great service when they see it...

Blocked outside drain.
"Excellent experience, Damian was great, efficient, quick, just got the job done. In the end the blockage needed jetting, but that was not a problem and no extra cost. He came out within 24 hours of a phone call. Would certainly use Happy Drains again."
Downstairs loo and sink unblocking, by jetting upstream from manhole in the garden.
"Brilliant. From the first phone call to saying goodbye. Job explained, job completed and everything works perfectly. The young guy called Tommy from Sunbury was top drawer. Going to do this jetting annually now."
Drain cleared
"Happy Drains contacted me within minutes of posting my requirement. Their communication was always very clear, and the one time I misunderstood something, they immediately contacted me by phone to politely correct my error. The plumber contacted me by phone to give me 20 minutes notice of his arrival. On arrival, he immediately assessed the situation, and rectified it using equipment within the vehicle. The whole process took just minutes, and he explained the causes of the issue to me. At the same time he checked all other connected drains and made good the area."
Blocked domestic manhole
"From the moment I picked up the phone to contact someone about the blockage to the work completed the service was exceptional. Kelly knew what work I would need doing with my frantic explanation and calmly and professionally advised she would contact me back with an update. 10 minutes later I was told I could have an engineer in as little as 2 hours. The engineer arrived promptly. Professional, friendly service carried out with honest and transparent future care advice. Was able to easily Apple Pay an hour later for service following my invoice. No hidden fees. Cost was as advised. Very happy."

Blocked drain
"We rang Happy Drains and were told someone would come round the next day and he arrived promptly at 8.30. He got straight to work and the drain was cleared. He cleared away all debris and swept and washed the patio where it affected. Excellent service and friendly staff."
Drain and sewer clearance
"Realised I had a problem when had to almost swim to the car. Thought I was covered by B Gas Homecare but I wasn't. Called out Happy Drains, competitive price, friendly and helpful on the phone. Turned up when they said they would. Quickly assessed the situation and cleared the sewer. Cleaned up and left. Staff were friendly and polite. I couldn't ask for more, would recommend them "
Unblocked an outside drain
"This Company were quick to respond. Very courteous. Engineer on site was very thorough and explained what was to be done. The blockage was soon resolved and we were very satisfied with the outcome and the price. Would certainly recommend . "
Recent Blog Posts...
In or near Welwyn, AL6, Hertfordshire, the following drainage problems could benefit from a Welwyn CCTV drain survey...
Ditch drainage problems in Hertfordshire
Fractured drain in Welwyn
French drainage problems in AL6
Bellied pipework in Hertfordshire
Problems with shared Welwyn drains
Joint displacements in Welwyn pipes and drains
Cracked or leaking Welwyn drains and pipes
Blocked or broken Welwyn drains
Tree roots damaging drains in AL6
Failed or broken soakaways in AL6
Welwyn CCTV-controlled cutting problem
Clogged or broken pipes in Welwyn
Cutting out tree root mass from Welwyn drains
Water level problems in AL6
Build-up of fat, grease, or detergent in Welwyn drains
Deformed pipework in Hertfordshire
Land drainage problems in Hertfordshire
Broken or blocked Welwyn sewers or sewage pipes
Ground movement causing Welwyn drain problems
Collapsed drain in Hertfordshire
Overflowing or leaking Welwyn septic tanks & cesspits
Overflowing or blocked Welwyn drain pipes
Bad smells in Hertfordshire
Vehicle activity affecting drains in Hertfordshire
Concrete, cement or builders’ rubble in Welwyn drain
Blocked Welwyn toilets and blocked Welwyn showers
Longitudinal cracking in Welwyn drains
Bellied drain in Welwyn
Welwyn pitch fibre pipework problems
We use selected local professionals in the Welwyn AL6 area.
This ensures a fast CCTV drain and sewer inspection & survey in Hertfordshire.
Welwyn and Hertfordshire drain services from a firm receiving great feedback...

Blocked outside drains
"Very courteous plumber, explained everything he was doing and investigated thoroughly to find out the problem and then fixed it."
Highly recommended
"Came out the same day. Charged a good price and cleared the drain very quickly."
Blocked kitchen and bathroom sinks
"Avril, Jack and Jordan were all outstanding and insisted on visiting twice to ensure that all my drains were completely clear. Efficient, knowledgeable and working to very high standard. All for a very competitive fixed price. This company is excellent. Thank you. "
Call 01727 227960
or our office mobile
07824 757572
All Welwyn CCTV surveys include our state of the art Drainify reporting software. Check out the demo: