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It’s official, Castle Water customers have the most accurate bills in the market, with the latest performance statistics from market operator MOSL showing we are number 1 for meter reading.
New results for the current financial year show Castle Water is championing businesses across the UK, with over 1.3 million on-time meter reads and a market-leading missed read rate of just 1.89% – better than every other retailer.
This means our customers receive the most accurate, transparent, and up-to-date bills in the market — and that’s just one of the many reasons businesses are switching to Castle Water.
Why Water Meter Reading Matters
When your bill is based on estimates, you risk paying for water you haven’t used — or getting hit with catch-up charges down the line. With Castle Water, accurate meter readings and smart billing systems mean you only pay for what you use.
John Reynolds, CEO of Castle Water, said:
“We are committed to ensuring our customers have the most accurate billing in the market, and the latest performance statistics from MOSL underline that we are fulfilling that promise. I’m proud to say we don’t just read more meters than any other UK retailer, we also read them on time and more accurately.
“We have invested in data systems so that our customers can have confidence in every bill they receive, and that their business is not negatively impacted by guesswork and unpredictability. Meter reading is just one aspect of our continuing drive to deliver value for businesses across the UK and put them in control of their expenditure.”
Compare missed read rates:
| Retailer | Missed Meter Read Rate (%) |
|---|---|
| Castle Water | 1.89 |
| Water2Business | 2.03 |
| Wave | 2.24 |
| Pozitive Water | 2.89 |
| Business Stream | 3.81 |
| Everflow | 4.61 |
| Clear Business Water | 5.1 |
| Water Plus | 5.35 |
| Pennon | 5.83 |
| SES | 5.88 |
(Source: MOSL Market Performance Standards (MPS) dashboard April-December 2025)
Best For Business – Paying For Your Water In Arrears
As part of our commitment to delivering customer value, Castle Water is one of the few major retailers that bills customers monthly in arrears – not in advance.
What does this mean for your business?
- No more advance payments based on estimates
- Pay only for the water you’ve actually used
- Better cashflow control and more predictable budgeting
This approach, combined with our superior meter reading performance, puts customers firmly in control — with accurate, fair, and transparent bills that reflect real usage.
Switching Water Retailer Is Easy
If you’re still paying in advance based on estimates with another retailer, you’re likely paying more than you should. Forget the myths, switching water retailer is a straightforward process and begins with our fast-response quote tool. In fact, many of our customers report immediate savings after switching – simply by stopping overpayments on estimated bills from other retailers.
Switching to Castle Water brings a host of benefits:
- Fairer bills
- Improved cash flow
- More transparency
- Fewer billing disputes
- Better environmental insight through accurate consumption data
The Clear Choice for Business Customers
Castle Water has always championed fairness, accuracy, and transparency in the water market. As the UK’s largest independent retailer, our independence allows us to put our customers first — not shareholders or network owners.
We’re not just leading in service — we’re leading in data, performance, and customer trust.
So if your business is serious about saving money, improving sustainability, and getting water bills you can rely on — it’s time to make the switch.
Get an instant online quote now at castlewater.co.uk/quote-tool
