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...

Blocked bathroom toilet
"They could not clear it initially so went outside and cleared the drain which they didn't need to (as that should be a Council responsibilty) - would recommend this company every time"
Unblocked a kitchen sink waste pipe
"The company was quick to respond to my initial call. The job was completed the following afternoon taking less than 15 minutes to complete. The technician was very polite and helpful. There was no call out fee or a dodgy plumber shaking his head for five minutes, making you think you've got a massive crisis on your hands. I will use this firm again in the future without doubt. "
Drain survey
"Just been visited by an engineer today. Arrived on time , knowledgeable, answered all my questions. Looking forward to receiving the survey documents."
Clearing blocked rainwater drain
"Great service! Job was done the day after booking. Arrived on time, 2 blocked drains jetted successfully with no fuss. Would highly recommend to anyone."
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...

Drain Blockage
"Our drain was blocked and it was terrible. Happy Drains technician came round same day and diagnosed the issue immediately, it was with the outside drain. He explained it all thoroughly but easy for us to understand. The drain was cleared and working in around 15 minutes. Very happy with price and workmanship, would thoroughly recommend Happy Drains to anyone with a blocked drain or for any other service they offer."
Unlocking of sewage drains
"Turned up when stated, gave a courtesy call to let me know they would be here within half an hour. Completed work with no fuss. Came through the house to check back drain to ensure job done, took shoes off without being asked. Quick, professional, friendly and polite. Also a HUGE positive they charge a set fee for the job regardless of time completed rather than those that charge per half hour."
Drain clearing
"After hours of trying to clear a blocked drain I rung Happy Drains. Nice guy arrived half hour after a phone call to say he was on the way at the agreed time of booking.I was amazed at how quickly the jetter cleaned my drains and cleared any blockages . The price was favourable .Thank you Happy Drains , I will never bother struggling again"
Clearing a blockage in the drains under the kitchen sink
"Absolutely superb service and I'm a fussy chartered surveyor ! Responded quickly to my email, came to sort the problem the next day . The blockage didn't shift easily but with determination the problem was sorted . All for an agreed up front fee , no additional charges. "

Flooded/partly blocked drain in kitchen.
"Phone was answered quickly when I rang up and explained the problem. I was called back pretty quickly with an estimated arrival time of between 11 and 3, in fact help arrived before 11. The problem was explained and assessed, and work began straight away. It took about 15 minutes or so and I was shown water draining from sink into manhole, blockage removed! Really quick, efficient job, I couldn't be happier."
Blocked Drain
"Very quick and no fuss. Damien showed up on time and had all the equipment needed. Sink functioning in less than an hour. Highly recommend."
Quickest and easiest unblocking i've seen!
"After so many expensive quotes from other companies regarding a clogged drain outside our kitchen window - Happy Drains answered our questions on Checkatrade and gave us a set quote - After talking to them on the phone, the team were kind, honest and fully transparent about how the day would go - One of their team members (unfortunately didn't get his name) came over, took one look at the drain, unblocked it and was on his merry way! Will definitely be recommending this company to friends and family!! Thank you so much team!"
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 kitchen sink drain
"Just a simple and excellent service in and out within 45 minutes.Highly recommend them."
Drain clearance
"I have used Happy Drains before, and again they provided an excellent service from the original phone call right up to the finished job. We were out when they arrived, and just got back after they finished, but after a mobile phone call they proceeded immediately. Everything was tidy, clean and in place on our return, so if you have a problem of this nature, I can honestly recommend Happy Drains 100%. Finally the cost of £114 was real value for money."
Unblocking drain
"From when you call them, you are dealing with a real person and with that comes efficiency. Very polite on the telephone and also the drain engineers on site were very polite and just got on with the job. They showed you the unblocked drain before leaving the site and explained what I would receive in the report via email. Thoroughly recommend them and very good value. For the amount of crap they have to unblock each day, the service is spotless."
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: