Easily and instantly test water quality using proven equipment connected to the Akvo Caddisfly Android app. Choose from an array of tests to find the right approach for your specific needs in terms of parameters, accuracy, budget, scale and more.


Caddisfly sits on Akvo’s data collection platform Akvo Flow, allowing you to easily combine real time data with other baseline mapping and monitoring activities. You can also view and share results in online maps.


Using smartphones reduces costs and makes results immediately accessible, allowing testing to scale up affordably. This leads to faster, better interventions.


We take a collaborative, partnership approach to support you in your goals. Akvo provides a range of services to ensure your data collection is effective, efficient and impactful.

  • Organisations using Caddisfly


  • Available parameters


  • Countries


Wide array of parameters

Using Akvo Caddisfly, you can test over 22 parameters for a variety of purposes. Choose from the following types of water quality tests to find the right one for your needs, from colorimetry (residual chlorine, fluoride, nitrate, and more) and sensors (EC, pH, turbidity) to microbiology (e.coli) and test strips (arsenic, nitrate, pH, and more).

User friendly

Akvo Caddisfly is simple to use and easy to carry around in the field. The Caddisfly app takes you through each test step by step and, where needed, determines the test result for you. Pictures of individual test results are included for quality assurance.

Share your results

Caddisfly lets you share data easily, supporting fast and targeted interventions. A user-friendly online workspace lets you create, export and publish reports, maps and data visualisations.

Immediate results

Your data is uploaded in real time to an online dashboard, providing you with results you can act upon immediately.

Cost efficient

With Akvo Caddisfly, you can scale up your water quality testing without the costs of sample conversation, transportation, or lab costs.

Map and monitor your results

Akvo Caddisfly connects with Akvo’s powerful data collection and monitoring tool Akvo Flow, which includes geo-tagged data collection, so you can quickly and accurately map situations and track changes over time.

Link to other platforms

Besides our own data visualisation platform Akvo Lumen, your data can be automatically exported to your own data platform.

Combine results with contextual data

Akvo Caddisfly can combine water quality measurements with contextual data, such as sanitary or environmental inspections, in one survey. This allows for easier interpretation of your testing results.

Works anywhere

Caddisfly’s Android app is designed to work in remote locations that are often off grid. Collect data even when you have no network coverage; collected data uploads automatically whenever network coverage resumes.

Collecting accurate data is just the first step in improving water quality. Akvo Caddisfly is part of Akvo’s ecosystem of interoperable tools. Akvo professional services and expertise are all designed to help you improve the effectiveness of your work at every stage.

Tool training

We train people – from data specialists, through to people who’ve never seen a smartphone before – to use Akvo Caddisfly to its full potential. We have offices and experienced training staff all around the world.

Tool support

When you have a question or an issue with Akvo Caddisfly, we’re here to support you both online and on location. Besides our online documentation, we provide regional and remote technical support with offices and staff spread across the world.

Technical consultancy

Akvo’s technical consultants are there to provide expert advice on the smooth usage of our tools and equipment. Our experts can assist you, for example, in water quality parameter selection and water quality monitoring set-up (data collector selection, sample design, survey design)

Context analysis

A thorough understanding of context is key to your project’s success. Which factors will influence your project? Which water quality parameters are important to measure? What are the possible sources of contamination? We’ll help you look at the bigger picture and lay a strong foundation for your data planning.

Monitoring framework

In order to measure your progress, you need to monitor key indicators. We can help you design your monitoring framework, from deciding which results need to be tracked to defining the indicators you’ll use to measure them.

Survey design

Digital survey design is at the heart of accurate data. With surveys designed specifically for your monitoring framework and data use, you’ll ensure that your data sets are reliable. We’ll help you create surveys that will help you to analyse water quality testing results and more.

Sample design

Sample design is key to data analysis as it determines whether your conclusions are scientifically accurate. We can help you balance the cost and the benefits of various sampling options.

Data collector selection

Good quality surveying relies upon data collectors with the right knowledge, skills, and training. We can share best practices from various sectors and support you in the selection process.

Monitoring data collection

Monitoring data collection as it happens can help prevent problems down the line, but knowing how to verify the data collection process can be a challenge. Is the quality up to scratch? Is your sampling going as planned? We can support you in these checkups.

Data analysis

Knowing how to analyse your data to extract the insights that matter can be a challenge. We have data experts around the world to help you translate your data into information that can be used. This involves everything from data quality checks, to cleaning, transformation, and analysis.

Data visualisation

Visualising your data brings it to life, and knowing how to visualise it in the right way for the right people gives it meaning. Our data analysts and GIS experts can help you translate your data into clear, compelling, and actionable visuals.

Report creation

We automate to achieve efficiency. Automatic report creation is a major time saver. Our technical consultants can develop custom reports to meet your organisation’s needs

Open data sharing

Contribute to or make use of open data platforms such as the International Aid Transparency Initiative (IATI) and the Water Point Data Exchange (WPDX). We can help you work with various formats, integrate different data sources, and ensure the data is useful for the audience.