Thames Water Leak Notice in Orpington or Bromley? What Section 75 Means for You

Why you received the notice

The letter usually comes after they’ve detected something that doesn’t look like normal household use. It can be a smart meter picking up continuous draw, or older meters where the readings don’t match typical patterns. In Orpington and Bromley, I see this a lot after cold snaps and then a sudden mild spell — tiny weaknesses in older pipe runs show up when the ground shifts and relaxes.

Sometimes it’s an acoustic survey. They’ll do checks around the road and pavements, especially on through routes like the A232 and areas feeding off it. That doesn’t mean the leak is in the street — it just means they’re narrowing down where the noise/vibration is coming from.

And yeah… the letter is often the first you hear of it. People assume Thames Water would call first. They usually don’t. It’s letter, then timer, then follow-up.

Who is responsible? (Communication pipe vs supply pipe)

This is where most homeowners get tripped up, because the wording is confusing and the physical layout doesn’t help. In plain English:

• Thames Water are responsible for the public main in the road and (typically) the communication pipe up to the boundary.
• The homeowner is responsible for the private supply pipe from the boundary into the property.

The annoying bit is the “boundary” isn’t always obvious. In Orpington it’s common to have a boundary box right by the pavement edge. In parts of Bromley you’ll see a box closer to the drive, or tucked near a hedge line. And that’s why people say, “But it’s under the pavement — surely that’s Thames Water?” Not always. The private supply can still run under paving slabs inside your boundary.

What “Section 75” actually means (without the scare tactics)

Section 75 is basically the legal framework Thames Water use to say: “If there’s a leak on your supply pipe, you need to repair it within the stated period.” Most notices give you a window (commonly around 4 weeks) to get it sorted.

If the leak is significant and it’s left, they can escalate — and in worst cases they can arrange work and recover costs. That’s the bit people fixate on, but honestly, if you act quickly and you keep some proof (invoice, photos, meter readings), you’re doing what the notice is asking for.

I’m not here to hype fear. I’m here to keep it practical: treat it like a clock, not a disaster.

Can you claim a leak allowance?

Often, yes — but it depends on Thames Water’s rules at the time and the situation. In general, leak allowances are typically tied to:

• Repair being completed within the notice window
• Evidence that the leak is fixed (meter readings stabilise after repair)
• Sometimes it’s limited (for example, one-time allowances in a set period)

The important part is keeping your proof. I always recommend taking a photo of the meter reading before and after, and keeping the invoice somewhere you can actually find later (sounds obvious… it isn’t when life gets busy).

What the fix usually involves (and what it doesn’t)

Let me say the quiet part out loud: the worst thing people do is hire someone who immediately says, “We’ll dig here, then dig there, then we’ll see.” That’s how you end up paying twice — once for the digging, once for the actual repair.

About SKR (and why this isn’t a call-centre operation)

A few “real world” examples (the kind that don’t show up in brochures)

Just to make this less abstract, here are a few situations I see around here:

• The “nothing looks wet” driveway leak: the meter ticks when everything is off, but the water disappears into hardcore under block paving. You don’t see a puddle — you see a bill.
• The boundary box full of water: someone checks the box near the pavement and it’s damp/muddy. That’s a clue, not a verdict — but it helps narrow the search.
• The “it must be Thames Water” misunderstanding: leak is technically under paving, but still on the private supply side because it’s within the boundary line.

None of these are rare. The reason they feel scary is because the letter makes it feel official. The fix itself is usually straightforward once the leak is located properly.

What people say (pulled from real Checkatrade feedback)

I’m paraphrasing these (so it reads like a human page, not a copy/paste wall), but they’re based on the kind of reviews customers leave. You can verify them on the Checkatrade profile.