The picture shows a rather dark room that is barely lit with grey walls and a white partition. The only light only illuminates the dark wooden table at which a man is sitting in the foreground. The man sits at a green fabric chair with a short backrest and looks directly into the camera. The man has short light brown hair, a greying beard, wears black glasses, a light blue polo shirt and a large black watch on his left wrist. In front of him on the table is a glass of water and in his hand in front of him is a tablet on which he is informing himself about istas water-metering.
Smart water metering

No more money down the drain. Smart metering makes a real difference.

We offer the ideal service for every building to use water intelligently. Our aim is to provide a solution for every customer requirement.

Why choose smart water metering?

Be Compliant with Regulations

Save Money & Be Energy Efficient

Be Eco Friendly & Reduce CO₂ Footprint

Accurate & Transparent Individual Billing

No More On-Site Visits with Remote Metering

Headline?

Water is our most precious resource, yet so much of it goes to waste – in many cases unnoticed. With smart water metering, you gain real-time insights, detect leaks early, and cut unnecessary costs, all while contributing to a more sustainable future.

Our remotely readable water meters offer the ultimate in convenience and flexibility for consumption-based water billing. This is because the devices automatically collect and process consumption data, eliminating the need to read meters on site in the home.

Whether for apartments, houses or large water systems, we have the right solution for every need – durable, accurate and easy to install. Our advanced technology ensures high measurement accuracy, helping you to conserve resources and enabling fair, consumption-based billing.

Less waste. More savings. Water metering that works for you.

Residents

Ensure you don't pay for utilities you don't use and gain more control over your bills.

Landlords

Eliminate manual meter reading and accurately bill each unit using a simple automated process.

Home Owners

Gain data-based insight into your water consumption, plus no more manual meter readings or site visit.

Property Managers

Prevent costly damage by detecting leaks early with advanced sensors.

Housing Cooperatives

Achieve long-term savings and operational efficiencies with a scalable solution.

Effortlessly track and manage water consumption – with ista.

See how smart water metering makes every drop count.

Water waste is costly and manual water billing is tedious – but what if every drop could be tracked in real time?

Our advanced smart meters provide total control, detecting leaks before they drain your budget. With AI-powered insights and automated alerts, you’ll never be left guessing about your water usage. Seamless installation, maximum savings, and a greener future – watch the video to see how smart water metering makes all the difference.

Smart water metering that benefits all.

Exact tracking & fair billing

Exact water metering starts with precise consumption tracking. Smart water meters, automatically measure individual usage in each unit and wirelessly transmit data to a central system at regular intervals. This eliminates manual readings and ensures real-time accuracy.

All residents can easily access their consumption data through a user-friendly app or receive detailed reports by e-mail.

Once the data is processed, each unit receives an easy-to-understand and detailed bill. Each bill is legally compliant, ensuring full transparency and allowing tenants and owners to easily understand their costs.

Fast to install and to build to last

Our water meters are easy to install and replace without interfering with the plumbing. As the devices are usually mounted on fixtures rather than permanently installed in the pipes, they can be easily removed and replaced with another module at any time.

Plug-in modules, such as those for remote consumption reading, remain functional for up to ten years – even if the meter needs to be replaced due to mandatory calibration periods.

As dry-dial meters, they ensure high measurement accuracy and reliability by preventing contact with flowing water, reducing the risk of deposits and ensuring long-term performance.

Track, save, repeat – with ista water meters.

The precise measuring technology of our water meters enables water consumption to be recorded exactly and billed according to consumption. Even the smallest withdrawals are accurately recorded, ensuring complete transparency in your billing. For fair cost allocation, ista offers modular main water meters and apartment water meters, which can be installed either flush-mounted or surface-mounted. For very high consumption levels, we also provide large-scale water meters.

100% Easy

A fast-to-install service with effortless water tracking.

100% Digital

Eliminate on-site visits, meter reading and cumbersome paperwork.

100% Sustainable

Reduce water waste, build a sustainable future, and enhance your property's value.

Good to know: The water bill also enables accurate and transparent billing of heat consumption. This gives residents a clear overview of their costs, while property managers and owners benefit from a simple and legally compliant overall solution. Our experts are happy to tailor all billing arrangements to your specific needs during a personal consultation.

Unlock efficiency: Our smart and future-proof devices.

By combining our one-stop solutions with the innovative technology in our appliances, managing your water consumption has never been easier. Our wireless ista ecosystem integrates heat cost allocators, heat meters, and water meters to provide precise and reliable consumption tracking for each unit. With intuitive digital tools for residents, property owners, and managers, we make metering effortless – offering a simplified administration, and, ultimately, a smarter path to sustainable energy savings. Our experts are happy to advise you on the best combination of tools to optimise efficiency and savings.

The background is coloured in dark blue and on the right side is the water-meter from ista depicted.

Water Meter

Smart hot and cold-water meter.
The background is coloured in dark blue and on the right side is the M-Bus from ista depicted.

Wired System (M-Bus)

Effortlessly monitor all meters.
The background is coloured in dark blue and on the right side is the radio system from ista depicted.

Wireless System (Radio)

Simplify your metering process.

MY ista

Your personal energy portal.
The picture shows a young man sitting at a white desk in his home, smiling and looking at his mobile phone and using the power metering service from ista. He is wearing a rust-brown corduroy shirt, a sand-brown shirt underneath and has black square glasses on. His hair is short and black and he has a short black beard. In front of him on the table is a laptop, next to it is a calculator, a ballpoint pen with a white sheet of paper and a white coffee cup. On the right side of the picture, directly next to the man, is a large monstera. The background is blurred, but a grey couch with brightly coloured cushions can be seen in the top left-hand corner and to the right of it is a orange and black wooden kitchen counter with two black bar stools.

Residents

Fair and transparent cost allocation ensures that you only pay for the water you consume. Monthly consumption is clearly displayed in the EcoTrend app. Residents can use the data to track heating in real time, understand their consumption pattern and identify potential savings.

The picture shows a woman sitting peacefully on her couch and looking at her phone while smiling. background of the picture ist slightly blurred but you can still distinguish is a white modern kitchen with a white stone wall. On the stone wall are two simple shelves with food containers and to the right of them on the wall is an extractor bonnet. On the right-hand side of the picture, three wall cabinets can be seen, two of which have glass fronts. Underneath you can see a counter with two white chairs. On the counter is a vase with decorative flowers. In the foreground you can see the upper part of a light grey couch on which an elderly lady is sitting. She has a grey bob, black glasses and is wearing a blue shirt and light blue jeans. The lady is smiling at her mobile phone she is holding in her hand, with which she can easily and conveniently use ista's SmartPay option.

Owners and managers

You no longer have to prepare the annual water bill yourself. A data-based and automatically generated bill for water consumption saves you time and is clearer for tenants or owners. In the ista web portal, you can easily manage all your residents' details and costs digitally. After logging in, you have access to your properties and can record, submit, edit, and review all billing-related data at any time.

Effortlessly track and manage water consumption – with ista.

From sign-​up to savings – a smooth journey to smarter metering.

From inquiry to implementation – our mission is to create smart, one-​stop solutions that make your life easier. We are here for our customers every step of the way and offer 24/7 customer support.

  1. Initial Consultation: Our experts provide a free initial assessment of current water usage and potential savings.

  2. Custom-​made proposal: For each property, we develop a personalised heat metering concept based on the client's needs.

  3. Planning: Once the contract is finalised, we work with the client to plan the best implementation timeframe.

  4. Fast meter & system installation: Our advanced water meters and wireless systems are installed with a minimum of disruption and downtime.

  5. Onboarding: We provide support to help customers to become familiar with our monitoring tool.

  6. Monitoring & Support: To maximise efficiency and savings, our support includes automated alerts, maintenance and expert assistance, as well as regular data analysis.

What sets us apart? Expertise you can trust!

With years of experience and a deep understanding of energy billing requirements, we set the industry standard for precision, reliability, and innovation.

3.7 mio. t
of CO₂ emissions avoided

60 million
devices

43 million
transmitting devices

68 years
of metering experience

14 million
apartments/commercial units

References and case studies

In the picture, a high stone wall can be seen in the background. The stones are quite small and have been arranged four times, two next to each other and two below each other, in such a way that they have formed several ovals. In front of this wall in the centre of the picture is a small tree in a dark pot. To the left of the tree are two men in dark suits talking about istas heat-contracting. The jacket of the man on the left is open, revealing his white T-shirt, and he is holding a document in his hands in front of his upper body. The man on the right, standing with his back to the plant, is carrying a black cloth bag in his left hand.

How smart leak detection helped save thousands in a Dubai community.

A gated community in Dubai was losing thousands due to hidden water leaks. By identifying and efficiently repairing them, we helped reduce costs and improve sustainability. See how proactive monitoring made all the difference.

In the picture, a high stone wall can be seen in the background. The stones are quite small and have been arranged four times, two next to each other and two below each other, in such a way that they have formed several ovals. In front of this wall in the centre of the picture is a small tree in a dark pot. To the left of the tree are two men in dark suits talking about istas heat-contracting. The jacket of the man on the left is open, revealing his white T-shirt, and he is holding a document in his hands in front of his upper body. The man on the right, standing with his back to the plant, is carrying a black cloth bag in his left hand.

London Success Story: 30% cost savings & happier tenants.

An apartment complex in London cut its annual water bill by 30% while improving tenant satisfaction through transparent billing. Discover how smarter water management made a lasting impact.

Explore case

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Everything you need to download.

Noteworthy technology acquisitions 2021

PDF - 5 MB

Frequently asked questions

Transform your property with more smart innovations.

Our tailored solutions help reduce environmental impact, enhance health and safety, and cut energy costs—making your building more efficient and sustainable.

The picture shows a modern residential complex with several white, multi-storey residential buildings standing on the left and right side of a paved path. The buildings have balconies with dark railings, and some balconies are decorated with plants and furniture. A wide, paved footpath stretches between the buildings and continues into the distance. On the left side of the path are lush green areas and colourful flowerbeds that embellish the space between the buildings. On the right-hand side of the path, young trees are planted at regular intervals, forming a green avenue together with manicured lawns. Other buildings can be seen in the background, completing the urban surroundings of the residential complex. The sky is clear and blue, indicating a sunny day. Overall, the picture conveys a calm and pleasant living atmosphere in a modern, well-maintained environment.

Heat Optimasation

Optimise heating systems for enhanced efficiency and savings.

The image depicts a man sitting at a round table in a well-lit office space. There is a glass of water and a small espresso cup on the table, adding to the professional yet comfortable atmosphere. The man is smiling and engaged with the water consumption billing from ista on his laptop, taking notes in a notebook. He is wearing a blue button-down shirt and glasses. The background features a flip chart, potted plants, modern furniture, and large windows allowing natural light to flood the room.

Water Billing

Save time and money with remote metering and transparent water billing solutions.

The Image shows a young man with a dark blue shirt, sitting relaxed on a table right by a window on the right side of the picture. He is smiling while looking outside, because with ista, his electricity billing is simplified and still precise, making it an effortless billing experience.

Electricity billing

Control electricity costs with precise billing, invoicing, and remote meter management.