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Severn Trent Case Study

The challenge:

How can Severn Trent (ST) use our website and digital campaigns to engage minority groups and create an attitudinal and behavioural change when looking after sewers?

Our solution:

I present a video prototype displaying our three key features. One is a marketing strategy we intend to use to promote sustainability and environmental responsibility by creating awareness about preventing blockages.

Please take a look at the video to learn more about our final outcome.

lboro - group17- industrial project -Preventing blockages
Homepage final screen on mobile
Plumber page's final screen on mobile
Menu's final screen on mobile
Sewer pipe's final screen on mobile
Plumber page's final screen on mobile
Payment's final screen on mobile

Project outline

Duration
6 weeks
Tools used
Miro logo
Miro
Microsoft teams logo
Microsoft Teams
Figma logo
Figma
Google forms logo
Google Forms
My roles
User Researcher
Team Mediator

Understanding the brief

1. Enhance the user experience by making the website intuitive, easy to navigate and visually appealing

2. All designs are mobile-friendly, providing a seamless experience on various devices.

How can Severn Trent (ST) use our website and digital campaigns to engage minority groups and create an attitudinal and behavioural change when looking after sewers?

This allows non-native English speakers to participate actively and have a better experience when navigating the site. 

1. Provide clear guidelines on the correct way to dispose of waste, highlighting what is not permitted to be flushed or dumped down drains. 

2. Supply users with a comprehensive resource on the causes and prevention of blockages to prevent blockages.

The problem

Context

Blocked sewer pipes are a significant problem in the UK.

Causes
Wipes icon
Wipes
Sanitary products icon
Sanitary products
Cooking oil and fats icon
Cooking oil & fats

Tree root intrusion and ageing infrastructure are also primary causes.

Impact
  • Disrupts the smooth operation of sewer sytems.

  • Affects public health.

  • Substantial costs for maintenance and repairs.

Secondary research

To gain further information on blockages, I contributed to researching and creating a simplified list of key topics. 

Take a look through our insights below:

1) Non-English speakers in the Severn Trent region

  • In 2021, a further 7.1% (4.1 million) of the overall population were proficient in English (English or Welsh in Wales) but did not speak it as their main language.
  • Most common languages other than English in 2021 were Polish (1.1%, 612,000), Romanian (0.8%, 472,000), Punjabi (0.5%, 291,000), and Urdu (0.5%, 270,000).

Primary research

After understanding the ins and outs of the problem through reliable sources, it was time to move the focus to primary research. To start the initial primary research phase, I helped create and promote surveys involving qualitative and quantitative questions to efficiently gain as much data as possible. All 30 survey respondents were 18-25 year old students from Loughborough University. The insights we received are as follows:

Language question data

More than 80% of our survey respondents did not speak English as their first language.

True or false question data

Most students understand what basic things are allowed down the drains (including kitchen and bathroom environments), but they find some specific items confusing.

An interesting discovery from the survey was that over 70% of students experienced blockages in their accommodation. Here are the causes of blockages and students' attitudes towards dealing with them.

Common blockage causes question data

The most common causes of blockages for students were hair and food scraps.

After blockage question data

88% of students said they would be more careful in the future.

Interviews

For the next primary research phase, I assisted with conducting in-depth interviews with five participants.

 

Four participants were international students living in student accommodation buildings on and off campus. Our participants were Chinese, Indian, Turkish, and Norwegian. As the User Researcher, I was grateful that the participants provided my team and me with insightful data to identify who our target users are, the challenges they experience, and their desires.

Insights from the student interviews:

1. Lack of awareness about the impacts and consequences of their actions.

2. Many of their wrongdoings are out of habit and what they are used to.

P1

"I am not aware of any sustainable effects."

P2

"I forget about it and dump it down the drain."

P3

"I don't know what can't be thrown down the drain"

P4

The pipes burst in our flat and we don't know why."

Participant's thoughts and opinions
  • Having some accessible tools and products would be helpful.

  • Disposes all liquids in the sink as it's easier.

  • They feel old pipes cause more blockages.

  • Environmentally friendly enthusiasts will care about their behaviour, unlike others who are not 

  • Lots of oil is hard to dispose of.

  • No one pays attention to the infographics provided.

  • ​Refuses to call for help due to language barriers.

The remaining participant was an accommodation manager who helped us better understand why blockages are becoming an increasingly problematic issue within international student accommodation buildings.

Insights from the accommodation manager interview:
Male manager icon
Matthew

Manager of an accommodation located in the Loughborough town centre

Behaviour

  • The drains get cleaned sometimes, once a month.

  • The building did not take measures to overcome the wrong usage habits of the residents.

Insights

  • Hair, food and milk are the leading causes of blockages.

  • Solid lumps form when milk becomes sour, also causing blockages.

  • They don't view blockages as a big problem because they don't happen very often 

Analysis

After obtaining an excellent amount of information, I decided it would be a good idea for the team to get involved in the analysis. This would give me an opportunity to hear different perspectives and discuss a diverse range of insights.

 

After we agreed on what the primary research informed us of, we collectively worked on the empathy map. This was one of the more significant tasks during the project as not only does it bring together each team member's points, but it also highlights any patterns between what the participants think, do, feel, or say. As a group, we began to notice that what they think and do are complete opposites, and they have a strong feeling of confusion due to their lack of awareness.

Empathy map based on student's answers

Persona

Combining the secondary and primary research, I made a persona representing our target users. The persona allowed us to empathise with the user's pain points and envision their end goals in the context of the project and brief.

Male student icon
Aamir Khan

23 years old

Internation student

Living in an en-suite accomdation off-campus with 7 other international students

Background
  • During his previous experience dealing with a blocked kitchen drain, he found milk curdling into a solid mass. So he bought some tools to fix the blockage, but he eventually had to ask the maintenance man for help.

Pain points
  • Most blockages in his kitchen are caused by the solidification of grease and the buildup of food debris, which are difficult for him to deal with.

  • Not sure if the waste he takes out will cause a blockage in the sink.

  • It is not easy for the maintenance staff to explain the cause of the blockage.

End goals
  • Reduce the probability of blockages in his home.

  • In the event of a blockage, he will know exactly what tools can be used.

User need statement

As an international group member living in the Midlands, I need a solution that enables me to raise awareness about waste disposal habits among my flatmates who use the communal kitchen about the consequences of sewer blockages and their impact on themselves and the environment.

Vision statement

We believe there is an opportunity to design a website and marketing strategy using a more visual language to help international householders raise awareness of preventing blockages whilst encouraging them to engage with it, leading to more positive attitudinal and behavioural changes.

Usability testing

With the vision statement in mind, my team and I conducted usability testing on the Severn Trent website with four participants from our user group. Using quantitative analysis and the think-aloud method, we discovered that most participants found the website confusing. This was evident in the number of errors they made and the time it took to complete a task.

Task time graph
Lostness score graph
Errors made graph
SUS score graph
Quantitive data
  • Systems Usability Scale <50 comes under the unacceptable range.

  • Even a user whose first language is English took a while to complete the task.

  • Most participants took a while to navigate around the website to finish the task and made lots of errors, which increased clicks and reduced their attention span.

'Think aloud' feedback
  • Confused about page navigation.

  • Often found themselves lost, particularly with the plumbing page

  • There was a lack of navigational shortcuts or direct links within the screens.

Ideation

Now that I had helped my team understand who our user group was and gained insight into the challenges they were experiencing with the website, we began devising various ideas. With the help of the crazy eight technique, we created many how might we (HMW) statements to reframe our insights into potential opportunities. To assist our group in deciding which HMW to proceed with, we each voted on the one we liked best and made it a priority. (The stars shown in the image represent our votes.)

This project phase involved a lot of iteration until we were all happy with the idea chosen. We were in a cycle of liking an HMW but soon realised it was either unfeasible or too complicated.

My role as a team mediator was also prominent during this stage. Although we often had many disagreements as a group, I helped guide the group members towards a mutual agreement.

Screenshot of the HMW statements we came up with as a team

Core features

Our proposal encompasses three main features: visual engagement, strategic promotion, and eco-awareness. I will take you through each of them, starting with the visual component. 

1. Visual Engagement

The campaigns pictured below prioritise visuals over text to ensure inclusivity and assist in overcoming language barriers, allowing diverse individuals to engage with the content effectively.

Campaigns showing visuals over text
2. Home Page

On the homepage, we provide direct access to prevent blockages so users do not have to search anywhere else, as this task increased search time for participants in usability testing. In order to comply with 1.4.9 of the AAA standard, we removed image-over-text and incorporated clear sections for user convenience.

Before
Old design of homepage
After
Redesign of homepage
3. Navigation 

The navigation page was one of the most confusing pages for the participants while testing. We introduced a navigational section with images for clarity to address confusion, simplifying the user journey and reducing language-related difficulties. This can be imitated throughout the navigation bar.

Before
Old design of menu
After
Redesign of homepage
4. Plumber Page 

The plumber page had a lot of congested text, which made the users uninterested and confused about how to proceed. By adding markers and clear steps, we enhanced user interest and guided them through the necessary actions.

Before
Old design of plumber page
After
Redesign of plumber page
5. Blockage Page 

The blockages page was one of our main focuses, as it was directly linked to the brief. Using images, iconography, and clear steps, we have created an intuitive page with reduced text and scrolling, improving user experience.

Before
Old design of blockage page
After
Redesign of blockage page

We have also added quick-access buttons so users can jump to the sections they want to see. We have added images to show directly what the tips are that reduce reading time. We have also demonstrated very clearly that one could change the language if they needed to, which was something that we noticed through our usability testing, as people would not use the accessibility feature existing on the page.

Redesign of second half of the blockage page

Strategic Promotion

Our second feature is being strategic. It is important to consistently raise awareness through various channels to optimise user reach and engagement. So, we have addressed higher-traffic pages and incorporated our campaign amongst them so that users can view this more often and leave a mark.

1. Payment Page

As you can see below, we have used the white space on the payment page and incorporated our campaign to show the visuals of various tips we would have used across all platforms quickly and consistently.

Before
Old design of the payment page
After
Redesign of the payment page
2. Plumber Page

On the plumber page, we have introduced a clear banner with a call-to-action button to reach a plumber directly instead of reading it through the text. We have also added quick access features that link to different pages on the website with visuals so that users can go and find advice that they need while they wait for the plumber, as they would already have a plumbing issue.

Before
Old design of plumber page
After
Redesign of plumber page

Eco Promotion

Our last feature is eco promotion. It is a marketing strategy that we use to promote sustainability and environmental responsibility through creating awareness about preventing blockages.

 

According to a YouGov survey, the most popular frequency of UK adults visiting a supermarket is weekly, which is very high. So, to raise awareness, we have come up with the idea of using a supermarket fin, which has been proven to be successful. The 90-degree angle enables the users to notice the fin as soon as they enter the aisle.

Affect on product sales

By promoting eco-friendly practices and raising awareness, our approach encourages sustainable choices without discouraging product purchases, aligning with supermarket CSR responsibilities. This idea makes consumers more conscious about reducing the sales of single-use plastics and chemical aldrin products while promoting organic, eco-friendly options. We would cover all bases through this, making it a win-win situation.

Illustrations

Here are a few illustrated examples of how they can be captivating and engaging. We have used elements like personification and comic bubbles to grab attention, along with Severn Trent's bright colours, increasing their brand image.

Examples of the supermarket fin illustrations
Visual example

Below are two examples of how the supermarket fin idea would play out in a store. On the left, you can see the sanitary pad aisle, and on the other side, you can see the fin placed in the oil aisle.

Image showing the fin in a sanitary product aisle
Image showing the fin in the oils aisle

User journey map

Here, I would like to show you how our ideas are incorporated and what the touchpoints are for the users. First, the user would see the infographic in the aisle while getting toilet rolls and doing her weekly shopping. In a few weeks, she would visit the ST website to make her payment and again see the same infographic, making an impression. Over the few months, she would consistently view this, leaving a mark on her brain that the next time she finds herself throwing oil in the sink, she will remember, oh, it must be thrown in the bin or collected.

User journey map of a user interacting with the website and fin

User testing

To evaluate our redesign, we conducted user testing with a sample size of six students using methods such as A/B testing, SUS testing, and the think-aloud technique

SUS testing

All users were relatively satisfied with the experience of the improved website. This was evident in our scores, with the highest being 75, the lowest being 55, and the average score equalling 65. Below is a display of the SUS score guidelines.

SUS score guideline
A/B testing feedback and insights
Original

Too many words cluttered the attention, didn’t know what to read and where to go.”

Old design of the blockage page
Redesign

“Visually, it looks more engaging and the steps make it more clear to follow.

Redesign of the blockage page

Below is a feedback chart detailing the number of times participants mentioned the same constructive comments regarding the redesign.

User testing feedback graph

Too much text in some places.

More spacing between elements would be nice otherwise looks a bit cramped.

Would be better if the font was bigger.

Due to deadlines soon approaching at this stage, we could not amend our designs based on the A/B testing feedback. Despite that, we took it as a learning curve on how to solve the issues raised.   

Overloaded text and small font size

  • Reduce the level of text.

  • Emphasise the hyperlinks more to enhance visibility.

  • Increase font size to improve readability.

Insufficient spacing

Use the white space to provide more breathing room around elements. 

Final outcome

After discovering that 70% of Severn Trent users visit the website with mobile phones, we made 6 of the key pages discussed in this case study mobile responsive. ​

Tap through the screens on the right to see them in action (It may take a few seconds to load).

 

Screens 4, 5 and 6 are now vertically scrollable too!

Future outlook

User interaction icon

Incorporate interactive tools on the website to enhance user experience.

Assessment quiz icon

Add a blockage risk assessment quiz showcasing blockage hotspots to help users understand their own impact and encourage behaviour change.

AR icon

Sustaining the attention of users with augmented reality games.

Limitations

Risk
How we plan to combat it?
Students icon

The sample size was large and mainly consisted of student groups.

Screenshot 2025-05-16 011114.png

Speak with household residents to gain direct insights for the brief.

Screenshot 2025-05-16 005748.png

Limited time to test and proof the product idea.

Screenshot 2025-05-16 010516.png

A proper user testing should be conducted before product release.

Misunderstandings icon

Misunderstandings between us and the stakeholders

Screenshot 2025-05-16 012341.png

Effective collaboration with the stakeholders avoiding miscommunication

Scale icon

A cultural bias with the participants, as all team members are Asian.

Diverse sample of students icon

Ensure our sampling demographic has more diversity.

Personal reflection

Before starting the module, my background in Digital Media and the master's course helped me develop valuable personal qualities such as empathy, organisation, introversion, and loyalty. These qualities proved beneficial to me and my team throughout the module. Being introverted, I excelled in listening and absorbing knowledge from team members, enabling me to analyse and resolve issues effectively. My introversion also facilitated the development of my empathetic trait, allowing me to consider different perspectives and anticipate user experiences. This was particularly helpful in identifying potential frustrations in the redesigned website. Additionally, my focus on inclusivity helped maintain a sense of team unity and collaboration during conflicts.

User researcher

As a user researcher, my primary focus is to gain a deep understanding of the target users' needs, behaviours, and attitudes to inform the design and development process. I have successfully conducted qualitative and quantitative research methods, analysed key insights, and crafted a clear vision statement for our desired outcome. I have empathised with users throughout this process and strived to envision their desires.

One main challenge in this role was accessing and recruiting participants for the primary research. We were already at a disadvantage because we could not conduct research with household residents. On top of that, we needed to recruit students from diverse backgrounds. To overcome this roadblock issue, I worked with my team to clearly outline what we needed to gain from the primary research and why. This helped us define our criteria and identify the appropriate channels to recruit participants. 

I'm grateful to have worked with my team as the user researcher. As a result, I have expanded my knowledge of qualitative research and usability testing, polished my ability to identify hidden problem areas, and created engaging user journey maps. These experiences have also improved my storytelling skills, allowing me to convey our ideas and user interactions effectively to the client.

Team mediator

A team mediator is "a neutral individual who guides the members involved towards initiating their own solution so their dispute can end in a mutual agreement". Performing this role allowed me to assist the team players in understanding and focusing on the key aspects of the issues so they can obtain the best possible resolution to their conflict. It was important to ensure there was no judgement from my side to let them freely express themselves and their emotions.

I acted as a good mediator throughout the project, presenting myself as friendly, empathetic, and respectful to team members. I actively listened during disagreements and showed genuine concern for everyone's well-being, despite minor challenges that arose.

Executing this role has taught me valuable transferable skills that will benefit me in my personal and professional life. These roles have enhanced my problem-solving, conflict resolution, and communication skills, boosting my confidence in working effectively in diverse team environments.

Despite that, I recognise areas where I could have taken more initiative and stayed persistent. For instance, I should have spoken up during task delegation to avoid confusion and offered alternative solutions, especially when members felt stressed about their assigned task because they did not understand what to do. Additionally, I regret not standing my ground regarding decision-making, particularly regarding the layout of our final presentation, as I, along with another group member, believed a different approach would have been more effective. My experiences in these roles could have been further improved. Fostering a more empowering environment where all team members can take on leadership roles would enhance the overall team experience. This approach promotes self-management and ensures clear communication, as each individual takes ownership of their responsibilities instead of solely relying on the designated "leader."

Moving forward, I will approach group work differently, prioritising proactive communication and assertiveness to improve outcomes.​​​

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