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1st Master Drainage & Groundwork
5.0(130 reviews)
Highly RatedExperienced
1st Master Drainage are local drainage Portsmouth based experts who have years of experience offering reliable and affordable services.
Best Drain Clearance Companies in Portsmouth (2026)
Independently reviewed · Last updated February 2026 · Covers Portsmouth and surrounding areas including Gosport, Fareham, Havant
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Brad Tyler Plumbing & Drainage
5.0(120 reviews)
Highly RatedTrusted
Brad Tyler Plumbing and Drain Services is a professional plumbing company that offers drain unblocking, surveys and repairs in and around Gosport and Hedge End.
3
IOW Drainage and Maintenance
5.0(110 reviews)
Highly RatedExperienced
High pressure jetting, sewage blockages, blocked toilets, stack pipes, unblock sinks BEST QUOTES ON THE ISLAND - NO CALL OUT FEE 24/7 IOW Drainage
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Swift Clear Drains
5.0(80 reviews)
Highly RatedProfessional
We know that when you have a drainage problem, all you want is to get back to normal as quickly as possible. Swift Clear Drains will get the job done fast and with the minimum of fuss.
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1A Drainflow (IOW) Ltd
4.9(330 reviews)
Highly RatedExperienced
For emergency drainage services in the Isle of Wight contact Drainflow (IOW) Ltd for a local 1 hour call out service. Call us in Newport on 01983 530 923
9
RMS Waste Disposal
4.9(60 reviews)
Highly RatedLocal Expert
RMS waste disposal has been operating since Sept 1997 with about twenty years experience behind it.
10
Dial A Rod Engineering Services Limited
4.5(180 reviews)
Quality Service
Starting as a small, family-run business over 30 years ago in Newport, Isle of Wight, DARES has gone from strength to strength, always offering high standards and a personal touch.
Drain Clearance in Portsmouth
Blocked drains are one of the most common household emergencies in Portsmouth. Whether it's a kitchen sink that won't drain, a gurgling toilet, or water pooling outside, the companies listed above can help.
Drain problems in Portsmouth are often caused by the same issues seen across the Gosport, Fareham, Havant, Bishops Waltham area: fat and grease build-up, tree root ingress, and ageing clay pipework. A professional can diagnose and clear most blockages within the hour.
If your drain keeps blocking in the same spot, it may be worth asking about a CCTV drain survey. Several of the companies serving Portsmouth offer this as an add-on, typically costing £100-£200.
Frequently Asked Questions About Drain Clearance in Portsmouth
What is the best drain clearance company in Portsmouth?
Based on our editorial research and customer reviews, 1st Master Drainage & Groundwork is the top-rated drain clearance company serving Portsmouth, with a 5.0-star rating from 130 verified reviews. They offer professional drain clearance services.
How much does drain clearance cost in Portsmouth?
The typical cost for residential drain clearance in Portsmouth ranges from £100 to £250, depending on the severity and location of the blockage. A straightforward external drain blockage is usually at the lower end, while internal blockages or those requiring specialist equipment may cost more. Most reputable companies in Portsmouth offer a fixed price with no hidden call-out fees — always confirm the price before work begins.
Can I get same-day drain clearance in Portsmouth?
Yes. Most of the top-rated companies serving Portsmouth offer same-day service, with many able to respond within 1-2 hours for emergencies. If you have sewage backing up or an overflowing drain, call the top-listed company directly — emergency call-outs are typically available 24/7 including weekends and bank holidays.
What causes blocked drains in Portsmouth?
The most common causes of blocked drains in residential properties around Portsmouth are fat and grease build-up (especially in kitchen drains), hair and soap scum (bathroom drains), tree root ingress (outdoor drains), and foreign objects like wet wipes and sanitary products. Older properties in Portsmouth may also have clay pipes that are more prone to cracking and root penetration.
Do I need drain clearance or drain repair?
Drain clearance removes blockages — hair, grease, debris, tree roots — and restores flow. It's a quick fix, usually completed in under an hour. Drain repair addresses structural damage like cracked, collapsed, or displaced pipes. If your drain keeps blocking repeatedly in the same place, you probably need a CCTV drain survey (£100-£200) to check for underlying damage. The companies listed above can advise on which service you need.
How do I know if a drain clearance company is trustworthy?
Look for companies with verified customer reviews, transparent pricing (a fixed quote before work starts), and no call-out charges. Membership of trade associations like the NADC (National Association of Drainage Contractors) is a good sign. The companies ranked on this page have been assessed on customer ratings, review volume, and professional reputation.
What areas near Portsmouth do these companies cover?
Most drain clearance companies listed for Portsmouth also cover nearby areas including Gosport, Fareham, Havant, Bishops Waltham, Hedge End, Petersfield. If you're outside Portsmouth, enter your postcode in the search bar above to find companies near you.
Not in Portsmouth?
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