Drain Unblocking in Portsmouth: 24/7 Help
24/7 drainage help across Portsmouth from Petersfield-based SouthFlow. Find drain clearance, toilet and sink unblocking, CCTV surveys and repair options.

Local Drainage Support
Across all of Hampshire,
Surrey & West Sussex
Blocked drains: describe the whole property problem
Whether the first sign is a rising toilet, standing sink water or an overflowing outside drain, tell SouthFlow about every affected outlet. Mention when symptoms began, earlier clearance and any findings already available.
SouthFlow is based in Petersfield and covers Portsmouth as part of its Hampshire service area. The business provides 24/7 drainage help and carries £5 million public liability insurance.
Emergency drainage in Portsmouth
If wastewater is overflowing or essential facilities cannot be used, explain the situation when arranging help. Say whether water is contained, overflowing outside or entering the property.
Avoid repeated flushing when a toilet is rising or not emptying. Keep people and pets away from overflowing wastewater, and discuss attendance arrangements for the actual problem.
Find the right drainage service
CCTV Drain Surveys
Camera inspections for Portsmouth drainage faults, purchase checks and repair planning. SouthFlow agrees access, inspection scope and required outputs with you.
Explore the Portsmouth service →Homebuyer CCTV Inspections
Pre-purchase drainage inspections for Portsmouth properties. Discuss seller access, the inspection scope and required evidence with SouthFlow.
Explore the Portsmouth service →Toilet Unblocking
24/7 help with blocked toilets in Portsmouth. Tell SouthFlow whether water is rising, overflowing or backing up at other outlets.
Explore the Portsmouth service →Sink Unblocking
Kitchen and bathroom sink unblocking in Portsmouth. SouthFlow assesses slow emptying, standing water and recurring restrictions.
Explore the Portsmouth service →Drain Jetting
High-pressure jetting for suitable Portsmouth drainage restrictions. SouthFlow assesses the pipework, access and clearance required.
Explore the Portsmouth service →Drain Repairs
Drain repair assessment in Portsmouth. Review visible defects, internal repair suitability, excavation and reinstatement requirements with SouthFlow.
Explore the Portsmouth service →Drain Relining
No-dig repair options for suitable Portsmouth drains. SouthFlow assesses the defect, existing pipe condition, preparation and access.
Explore the Portsmouth service →Help the visit work for your property
If the address is a flat, rental or managed premises, explain who can provide access to the relevant drainage points and shared working areas. Include locked gates, parking or access restrictions that may affect attendance.
For business premises, the Commercial Drainage page lists SouthFlow’s confirmed range, including CCTV surveys, no-dig repairs, excavation, dye tracing and pollution control.
When a blockage keeps returning
Explain how long earlier clearance helped and what was found. A recurrence may justify investigation rather than assuming another identical treatment is sufficient.
Our Portsmouth camera survey page explains visible internal inspection. If damage is identified, repairs or suitable relining can be assessed from the findings.
Drain unblocking cost and coverage
Ask which work, attendance charges and inspection are included, whether VAT applies and how further work would be agreed. The restriction and access determine the actual scope, so request a quote for your property.
SouthFlow covers Portsmouth, including enquiries in Southsea, Fratton and Cosham, within its whole-Hampshire service area. Supply the full address and postcode. See Hampshire coverage or Havant drainage for further area information.
Your Portsmouth service questions
Do you offer 24/7 drainage help?
Yes. SouthFlow provides 24/7 drainage help. Tell us where the problem is, whether wastewater is overflowing and how essential facilities are affected. Attendance arrangements are confirmed for the individual enquiry.
Where is SouthFlow based?
SouthFlow is based in Petersfield and covers Hampshire, Surrey and West Sussex. A town page describes our coverage; it does not mean we have a separate branch in that town.
Should I book clearance or a CCTV survey?
Clearance addresses a restriction, while CCTV inspection investigates visible condition inside accessible pipework. Describe the symptoms and any previous problems first so the appropriate next step can be discussed.
What should I do if wastewater is overflowing?
Avoid adding more water through affected outlets where that worsens the overflow. Do not repeatedly flush a blocked toilet, and keep people and pets away from wastewater.
Does a blocked drain always need a repair?
No. A blockage can occur without structural damage. If a defect is suspected or the restriction keeps returning, inspection may help establish whether repair is needed.
What information helps when requesting help?
Provide the full address and postcode, the affected outlets and when the problem started. Include previous findings, access restrictions and the contact who can authorise work at a rented or managed property.
How much does the work cost?
We quote for the work your property needs. The price depends on the problem, access, preparation and attendance arrangements. When requesting a quote, ask what is included and whether VAT or additional investigation charges apply.
Need drainage help in Portsmouth?
Tell us the address and the problem or planned work.
