South West Water Said I Have A Leak: What Do I Do?
That letter from South West Water just landed on your doormat. My heart sinks every time I hear this from homeowners across Devon and Cornwall – not because it's always bad news, but because I know the panic it causes. After 30 years helping customers navigate leak notifications, I can tell you this: understanding what SWW's asking for (and what they're not) can save you thousands. Let me decode that notification and show you exactly what to do next.
When South West Water notifies you about a leak, you typically have 7-14 days to investigate and repair any leaks on your private supply pipes (from your boundary to your home). SWW offers up to £100 for repairs or £250 for pipe replacement. Understanding whether it's a friendly notification or a Section 75 legal notice determines your urgency level and next steps.
Immediate Action Checklist (Do This Today)
- Check the notification type: Is it a "helpful heads-up" or a Section 75 legal notice?
- Note the deadline: Section 75 notices give 7-14 days (legally enforceable)
- Turn off stop tap: Check if your meter's still spinning (confirms leak location)
- Document everything: Photos, meter readings, notification date (insurance needs this)
- Check insurance: Most home policies cover trace and access for leaks
- Get advice and a quote from DCI Leak Detection: Submit a form here
Understanding Your South West Water Leak Notification
Not all SWW leak notifications are created equal. After helping hundreds of customers across Cornwall and Devon navigate these letters about South West Water leakage issues, I've learned to spot the difference immediately. Here's what you're actually dealing with when it comes to South West Water leak reporting:
Type 1: Friendly Customer Alert
"We've noticed higher than usual water consumption at your property..."
Translation: SWW's smart meters have flagged continuous flow. This is a courtesy heads-up, not a legal requirement. You've got time to investigate properly.
Type 2: Section 75 Water Industry Act 1991 Notice
"Under Section 75 of the Water Industry Act 1991, you are required to repair..."
Translation: This is legally enforceable. Ignore it and SWW can fix the leak themselves and bill you for their costs (typically much higher than private contractors). The clock's ticking.
The difference matters enormously. Consider a typical scenario: a homeowner mistakes a Section 75 notice for "junk mail" and ignores it. SWW then carries out the repair themselves and charges significantly more than a private leak specialist would have cost. The same repair that might cost £350 privately could end up costing much more when enforced by the water company.
Section 75 Notices: The Legal Bit That Matters
Section 75 of the Water Industry Act 1991 gives water companies legal powers to prevent water waste. Here's what actually matters when you receive one:
Your Legal Timeline (according to South West Water)
- Day 0 – Awareness: You become aware of a leak, or SWW issues a leakage notice.
- Within 30 days: Repair or replace the leaking underground supply pipe (or arrange for approved contractor) so you remain eligible for SWW’s contribution and/or leak allowance.
- After repair: Submit all relevant evidence (invoices/receipts) to SWW so they can process repair contributions or bill allowances.
- If not repaired: SWW may issue a legal notice and could carry out the repair and charge you.
Under Section 75 of the Water Industry Act 1991, the notice must give you a period of at least 7 days. South West Water usually allows 30 days to repair a leak on your supply pipe, but in some cases they may issue a 10-day notice. Always check the specific deadline shown on your notice.
Immediate Steps to Take When South West Water Reports a Leak
Right, you've got the notification. Here's exactly what to do, in order, starting today:
Confirm the Leak (5 minutes)
Turn off all taps and appliances. Check your water meter. If the dials are moving, you've got a leak on your side that needs South West Water leak reporting. If they're static, the leak might be on SWW's network.
Call SWW (10 minutes)
Ring 0344 346 2020 for South West Water leak detection support. Ask for:
- Clarification on leak location
- Available financial assistance
Document Everything (15 minutes)
Take photos of:
- The notification letter
- Current meter reading
- Any visible damp/damage
- Your stop tap location
Check Insurance (20 minutes)
Call your home insurer. Ask specifically about "trace and access" cover for water leaks. Most policies include this, covering professional leak detection costs.
Stop Water Damage (ongoing)
If leak is visible/causing damage:
- Turn off at stop tap
- Move valuables
- Set up buckets/towels
- Run dehumidifiers
Get Professional Help
If you’re unsure where the leak is or it’s proving difficult to locate, it’s best to bring in professionals who specialise in leak detection. Contact DCI Leak Detection today for expert advice and fast, accurate service.
Your Responsibilities vs South West Water's
Understanding who owns what can save you money. Here’s how responsibilities are defined for SWW customers:
| Location | Owner | Who Pays for Repairs | Notes |
|---|---|---|---|
| Mains pipes in road | South West Water | SWW | No customer charge |
| Communication pipe (main to property boundary) | South West Water | SWW | No customer charge |
| External/company stop tap (usually at boundary) | South West Water | SWW | Maintained by SWW |
| Supply pipe (boundary to internal stop tap/property) | Property owner | You | You may qualify for an SWW contribution (up to £100 repair / £250 replacement) and a leak allowance if metered. |
| Internal plumbing | Property owner | You | Private plumber/leak specialist/contractor |
| Shared supply pipes | All connected property owners (jointly) | Split between owners | Appoint one owner to coordinate works/claims |
South West Water's Financial Assistance (The Bit They Don't Shout About)
SWW offers more help for South West Water leakage problems than most customers realise. Their SWW leak detection support includes financial assistance that can significantly reduce your repair costs. Here's everything available as of 2025:
Leak Repair Contribution
For repairing existing supply pipes
- One payment per leak
- Must repair within 30 days
- Need receipts/invoice
- Homeowners only
Pipe Replacement Subsidy
For full supply pipe renewal
- If pipe is beyond repair
- Must complete within 30 days
- Leak Detection Specialist required
- One per property lifetime
LeakBot Programme
LeakBot Smart Device Trial
SWW conducted a 6-month trial of 6,000 LeakBot devices across Devon and Cornwall starting in March 2024. These devices clip onto your pipe near the stop tap and alert your phone to leaks. The trial included:
- Free device and installation
- Free repair if leak detected
- Smartphone app alerts
- 60% reduction in household leaks (from previous trials)
Ask about current availability when you call – the trial may be extended or new programmes may be available for high-usage properties.
Priority Services Register Benefits
If you're on SWW's Priority Services Register (elderly, disabled, medical conditions), you get enhanced support for South West Water leakage issues:
- Free leak detection test conducted for you
- Priority repair scheduling
- Extended deadlines for Section 75 notices
- Additional support navigating the process
Register at southwestwater.co.uk/priority or call 0344 346 1010.
Leak Allowance: Getting Money Back on Your Bill
Here's something most don't know: if you're on a water meter, SWW will credit your account for water lost through leaks. This can be worth hundreds:
Qualifying for Leak Allowance
- Must be on metered supply (not rateable value)
- Leak must be repaired (provide proof)
- Take meter readings before and after repair
- Apply within 6 months of repair
- One allowance per leak (can claim again for new leaks)
- Covers up to 12 months of excess usage
For example, a customer on a water meter with a hidden leak that ran for 6 months could receive hundreds of pounds back through the leak allowance scheme. The key is documenting everything and applying promptly. Apply online at southwestwater.co.uk/leak-allowance or call 0344 346 1010.
Finding and Fixing the Leak
Once you know there's a leak, finding it quickly saves money and damage. While SWW leak detection services offer initial support, here's the systematic approach for dealing with SWW leaks:
When to Call Leak Detection Specialists
Professional leak detection saves money long-term. While SWW provides basic South West Water leak detection assistance, we use advanced methods beyond what SWW offers:
- Acoustic leak detection – listening for water escape sounds
- Thermal imaging cameras – spotting temperature differences
- Tracer gas technology – following pipe routes precisely
- Moisture meters – measuring water content in materials
Professional detection can save money long-term. We've found leaks under 2 metres of concrete that multiple plumbers had missed. After accounting for the SWW subsidy, customers typically pay much less than they would have spent on multiple unsuccessful repair attempts.
Shared Supply Pipes: The Nightmare Scenario
If your notification mentions "shared supply," brace yourself. These require all connected properties to agree on action. Here's how to navigate this minefield:
Managing Difficult Neighbours
After mediating dozens of shared supply disputes, here's what works:
- Call a meeting immediately – face-to-face beats letters
- Get SWW involved early – they'll explain legal obligations to all parties
- Nominate one representative – simplifies contractor dealings
- Get everything in writing – who pays what, when
- Consider separate supplies – sometimes cheaper than endless disputes
If neighbours absolutely refuse, SWW will do the work and pursue all parties legally. Courts always side with water companies on Section 75 enforcement.
Insurance Claims for SWW Leak Notifications
Your home insurance might cover more than you think when dealing with South West Water leak reporting issues. Here's how to maximise your claim:
What's Typically Covered
- Trace and access: Finding and exposing the leak (usually £5,000-£10,000 limit)
- Damage from escape of water: Repairs to property damage
- Alternative accommodation: If home is uninhabitable
- Loss of metered water: Some policies cover this
What's NOT Covered
- The pipe repair itself (wear and tear)
- Gradual damage from slow leaks
- Failure to maintain property
- Costs if you ignore the notification
- Check your policy wording—commonly, it’s phrased as “sudden and unforeseen escape of water”, but this can vary.
- Record the date when you were notified by South West Water (or when you discovered the leak) as this helps show prompt action.
- Act quickly to minimise damage (shut off stopcock, call a leak specialist) and notify your insurer as soon as possible—unreasonable delay may prejudice your claim.
What If No Leak Is Found?
Sometimes SWW gets it wrong. If professional investigation finds no leak on your property:
- Get written confirmation from the investigating specialist
- Send this to SWW immediately (email and recorded delivery)
- Request SWW investigate their side of the boundary
- If you paid for investigation: SWW must compensate reasonable costs if no leak exists
- Keep fighting: False Section 75 notices can be challenged legally
In some cases, customers have received Section 75 notices when no leak exists on their property. Professional investigation proving no leak exists can lead to SWW compensating for reasonable investigation costs. They must investigate their own infrastructure if no leak is found on your property.
Preventing Future Leak Notifications
After fixing a leak, prevent future notifications with these proven strategies:
Annual Prevention Checklist
- Check water meter monthly (spot increases early)
- Service stop taps annually (apply silicone spray)
- Insulate external pipes (prevents freeze damage)
- Fix dripping taps immediately (why taps drip continuously)
- Check toilet cisterns (stop water running in toilet)
- Consider LeakBot or similar monitoring
- Know your water shut-off valve location
Essential South West Water Contact Information
Keep these numbers handy – you'll need them:
Critical Mistakes to Avoid
These mistakes frequently cost customers significant sums in additional repairs, lost subsidy and higher bills:
- Ignoring the leakage notice – If SWW issues a legal notice and the leak isn’t repaired or you don’t engage with them, you may lose eligibility for allowances or contributions, and the full repair cost will become your responsibility.
- Using non-qualified contractors – Repairs must be carried out by a suitably skilled plumber/contractor for SWW’s subsidy or allowance scheme to apply.
- Failing to document the repair – Without proper invoices/receipts you will not qualify for SWW’s repair contribution or meter-based leak allowance.
- Missing the repair deadline – The deadline given in the notice (often up to 30 days) must be met; missing it may forfeit your right to support.
- Trying DIY when not appropriate – If the work involves underground supply pipes or complex reinstatement you’ll likely need a qualified contractor to meet SWW’s conditions.
- Not applying for a leak allowance – If you’re metered and qualify (leak on supply pipe, fixed within timeframe), you may miss out on a reduction in your water charge by failing to apply.
Need Help With Your SWW Leak Notification?
Don't let South West Water's deadline pressure you into expensive mistakes. Our specialist leak detection can pinpoint the exact location, minimising repair costs and maximising your SWW subsidy claim.
Get Expert Leak Detection HelpCall Dickie on 07822 025 911 for immediate advice
Regional Considerations for Devon and Cornwall
Why SWW Notifications May Be Increasing
South West Water has upgraded many of its meters to remote-reading models which transmit usage data every 12–24 hours and can flag continuous flow patterns that older meters would not detect. This means a previously unseen small leak on your supply pipe may now be picked up sooner by SWW’s systems — allowing them to issue a notification where historically it might have gone unnoticed for years.
In addition, SWW serves a region with water-resource challenges, including drought risk, higher seasonal demand, and tourism pressures. Their current plans include significant leakage-reduction and water-efficiency targets to strengthen the region’s resilience. As a result, customers may see more proactive notifications to find and fix leaks on private supply pipes.
Local Factors Worth Knowing
- Granite and rocky terrain: Can make underground leaks harder to locate or mask sound signals used in detection.
- Clay or shifting soils: Seasonal soil movement can stress buried pipes and increase the chance of leaks.
- Tourist and secondary-home areas: Properties left unoccupied in the off-season often develop unnoticed leaks.
- Long rural supply runs: Extended supply pipe distances create more potential leak points and complicate tracing.
- Coastal and salt-air environments: May accelerate corrosion in older metallic pipes and fittings.
The Bottom Line on SWW Leak Notifications
A South West Water leak notification isn’t necessarily the disaster it first seems — if you act promptly and know your rights. Understanding what the notice means, and what help is available, makes all the difference. Remember:
- Check whether the notice is a friendly alert or a formal legal notice under Section 75.
- Use SWW’s free detection support and the financial assistance schemes available for eligible supply-pipe leaks.
- Keep full records of what was found, what was done, and when — this helps with insurance and eligibility for allowances.
- Repair within the deadline specified in your notice — missing it may forfeit your support eligibility.
- Apply for any available subsidy or leak allowance from SWW if your property qualifies.
Most importantly, don’t panic and don’t ignore it. The difference between a relatively modest repair cost with subsidy and a potentially large enforcement charge often comes down to prompt action and clear communication.
With three decades of experience in leak detection across the South West, I’ve seen nearly every scenario. The customers who handle notifications best are those who understand the process and use every bit of help available. Now you’re one of them.
If you’re investigating a potential leak yourself, it helps to understand methods to detect leaks in water supply pipes so you can communicate clearly with professionals. And if you suspect the leak might be under your floor or in your central heating system, specialist detection is strongly recommended.
Professional Leak Detection Services Across Devon & Cornwall
Frequently Asked Questions About SWW Leaks
How long do I have to fix a leak when South West Water notifies me?
If you receive a Section 75 notice under the Water Industry Act 1991, you legally have between 7-14 days to repair the leak, depending on its severity. Severe leaks typically get 7 days while minor ones may receive up to 21 days. The deadline will be clearly stated on your notice. If it’s just a courtesy notification (not Section 75), there’s no legal deadline, but prompt action prevents water waste and higher bills. If you can’t meet a Section 75 deadline due to genuine circumstances like illness or contractor availability, contact SWW immediately on 0344 346 2020 to request an extension.
What financial help does South West Water offer for leak repairs?
South West Water offers significant financial assistance that many customers don’t know about. You can claim £100 towards repairing your existing supply pipe or £250 if the pipe needs complete replacement (homeowners only). Additionally, they provide up to 30 minutes of free leak detection service to help locate the problem. The repair must be completed within 30 days and you’ll need receipts for reimbursement. If you’re on their Priority Services Register, you may qualify for additional support including free leak checks conducted on your behalf.
Who is responsible when the leak is on a shared supply pipe?
When your leak notification mentions a “shared supply,” all properties connected to that pipe share equal responsibility regardless of where the leak is located. This means you and your neighbours must agree on repairs and split costs equally. If neighbours refuse to cooperate, SWW can still enforce a Section 75 notice against all connected properties. The water company will carry out repairs if agreement can’t be reached and bill all parties. Consider appointing one representative to coordinate or explore having separate supply pipes installed to avoid future disputes.
Can I do the leak repair myself or does it need to be a qualified plumber?
For South West Water to accept your repair and provide financial assistance, the work must be completed by a leak detection specialist. DIY repairs won’t qualify for the £100-£250 subsidy and may not be accepted as compliant with a Section 75 notice. While you might save money initially with DIY, using an approved contractor ensures the repair meets standards, qualifies for subsidies, and provides documentation for insurance claims.
What's the difference between a leak notification and a Section 75 notice?
A standard leak notification is a courtesy alert from SWW’s smart meters detecting unusual water flow – it’s helpful advice with no legal obligation. A Section 75 notice is a legal document under the Water Industry Act 1991 requiring you to repair the leak within a specified timeframe (usually 7-14 days). Section 75 notices will clearly state “Section 75 Water Industry Act 1991” and include specific deadlines. Ignoring a Section 75 notice allows SWW to repair the leak themselves and charge you their costs, which are typically much higher than private contractors.
How do I claim a leak allowance from South West Water?
If you’re on a water meter, SWW will credit your account for water lost through leaks once repaired. To claim: take meter readings before and after repair, keep all receipts and documentation, apply within 6 months of repair completion either online at southwestwater.co.uk/leak-allowance or call 0344 346 1010. The allowance covers up to 12 months of excess usage and you can claim for each separate leak incident. Previous customers have received hundreds of pounds back, making this claim essential for metered properties.
What happens if professional leak detection finds no leak on my property?
If professional investigation proves no leak exists on your property after SWW notification, get written confirmation from the investigating plumber or leak detection specialist. Send this immediately to SWW via email and recorded delivery. Request they investigate their infrastructure as the leak may be on their communication pipe. If you’ve paid for professional investigation and no leak is found, SWW must compensate reasonable costs. Keep all receipts and documentation. False Section 75 notices can be legally challenged and compensation claimed.
Will my home insurance cover the leak detection and repair costs?
Most home insurance policies include “trace and access” cover, which pays for professional leak detection (typically £5,000-£10,000 limit) and damage from escape of water. However, the actual pipe repair (wear and tear) usually isn’t covered. When claiming, use the phrase “sudden and unexpected escape of water” and provide the SWW notification as proof you acted promptly. Check your policy specifically for trace and access coverage. Your excess will apply, but professional detection costs often exceed this significantly.
How can I check if I actually have a leak myself?
Turn off all taps and water-using appliances in your property. Locate your water meter (usually near the front boundary) and check if the dials are moving – if they are, you have a leak on your supply. For confirmation, take a meter reading before bed (ensuring no water use overnight) and check again in the morning. If readings differ, there’s definitely a leak. Also look for signs like unexpectedly lush grass patches, damp walls, reduced water pressure, or the sound of running water when everything’s turned off.
What should I do if I can't afford the leak repair costs?
First, remember SWW offers £100-£250 assistance which significantly reduces costs. If you’re struggling financially, register for SWW’s Priority Services (if eligible) for additional support. Check if your home insurance covers trace and access. For severe hardship, contact SWW’s affordability team on 0344 346 1010 to discuss options. Some charities and local councils offer emergency repair grants. Never ignore a Section 75 notice due to cost concerns – this will result in much higher charges when SWW enforces the repair themselves.Retry