Water quality scientists safeguard all aspects of water quality through scientific testing and analysis

As a water quality scientist, you'll ensure that water quality targets and standards relating to specific legislation are met. You will test and analyse water samples and compare test results with these standards, investigate shortfalls and take action to remedy problems.

Depending on your employer, you may be involved in providing solutions to water quality problems and water quality regulation. More senior roles may involve significant liaison with businesses, the public and other water industry professionals.

Types of water quality scientist

You may specialise in one of the following areas:

  • drinking water
  • groundwater
  • surface water (including rivers, lakes and estuaries).


As a water quality scientist, you'll need to:

  • take water samples (although routine sampling may be carried out by technicians)
  • carry out sample preparation, laboratory testing of samples for chemical or microbiological parameters and, in the case of drinking water, assess the quality of taste and clarity
  • analyse, interpret and report on water quality data
  • understand trends and patterns and assess compliance with regulatory standards and potential risks to consumers
  • carry out daily laboratory quality control checks
  • visit sites of concern, such as potential sources of pollution or contamination, and sources of complaints about drinking water quality
  • liaise with customers and representatives from regulatory authorities
  • undertake quality audits and lead investigations into atypical findings
  • investigate reasons for lapses in water quality and suggest changes or solutions to these problems
  • provide advice on avoiding problems, for example to businesses discharging effluent
  • negotiate effluent discharges fees
  • contribute to projects concerning water quality improvement
  • check customers' premises and the construction of drains
  • investigate pollution incidents from a scientific and legal viewpoint
  • arrange for emergency action in response to pollution-causing incidents
  • conduct research related to water quality and set up field surveys
  • share information with water quality professionals from other agencies
  • adhere to health and safety procedures.


  • Entry-level salaries for water quality scientists range from around £18,000 to £25,000.
  • With experience, salaries can rise to in the region of £25,000 to £35,000.
  • Salaries for water quality scientists with chartered status, considerable experience and greater responsibility can be in excess of £55,000.

Salaries vary depending on a range of factors such as the size and type of company you work for, your skills and experience, and location.

Benefits may include a contributory pension scheme, company car and private healthcare scheme.

Figures are intended as a guide only.

Working hours

Standard working hours are 37 hours a week, 9am to 5pm. Many organisations, however, provide 24-hour emergency cover, so you may have to work on an out-of-hours or standby rota.

Extra hours may be expected in response to a serious incident.

Part-time work and career breaks are possible.

What to expect

  • Working outdoors in all weathers is typical for field-based staff but not for regulatory or laboratory-based scientists.
  • The work is varied and your day-to-day schedule may be unpredictable and reactive as you will need to respond to incidents.
  • Part of each day may be spent travelling to sites of concern or to customers' or businesses' premises. Covering a large region may involve considerable daily travel.
  • Self-employment and freelance work as a consultant may be possible once you have gained significant experience and expertise.


You'll usually need a degree in a science-related discipline. The following degree subjects are particularly relevant:

  • biochemistry
  • biology
  • chemistry
  • environmental science
  • geochemisty
  • geology
  • microbiology.

Many of the water companies have Chartered Institution of Water and Environmental Management (CIWEM)-accredited graduate training schemes or management training programmes. These schemes tend to concentrate on commercial functions and water operations management, rather than water quality work. They typically provide structured training towards understanding all aspects of the business, as well as support for professional qualifications and chartership.

Entry is sometimes possible with an HND in a subject that has a strong element of analytical chemistry and/or biology. However, it may be difficult to secure a job with an HND only due to the level of competition. If you have an HND you're more likely to be recruited to technician or sampling roles, with progression possible through experience and further study and training.

You're unlikely to get a job as a water quality scientist without an HND or degree. Check job adverts and speak to people in the role to find out what qualifications and experience employers are looking for.

Although a postgraduate qualification is not generally required, it can be useful. If you're thinking of further study, look for postgraduate courses with work placements or with strong ties to the industry. CIWEM accredits a small number of courses.


You'll need to have:

  • good laboratory skills
  • excellent written and verbal communication skills
  • interpersonal skills for liaising with customers, regulatory and health bodies, and other internal and external stakeholders
  • the ability to analyse and interpret data
  • attention to detail
  • the ability to communicate specialist information to the public and businesses in a simple way
  • sound judgement and the confidence to make important decisions quickly
  • time management and organisation skills and the ability to prioritise your workload
  • effective teamworking skills
  • IT skills
  • an awareness of the water industry, particularly water companies, and health and safety regulations.

You'll usually need a driving licence due to daily travel to sites.

Work experience

Getting relevant work experience, either paid or voluntary, is important. You could do a year's industrial placement as part of your degree or look for internships and summer vacation schemes.

Organisations offering voluntary work include:

Laboratory work experience is also useful as the job often involves preparing, testing and analysing samples.

It's a good idea to get membership of a relevant organisation to keep up to date with news in the industry. Student and graduate membership is available with CIWEM. This gives access to publications and opportunities to attend conferences and events.

Find out more about the different kinds of work experience and internships that are available.


Water companies provide a major source of employment within the industry. There are various companies that supply water and sewerage to England and Wales and a full list can be found at Ofwat - Water Company Contact Details.

In Scotland, Scottish Water is responsible for providing water and waste water services. In Northern Ireland, these services are delivered by Northern Ireland Water.

Other employers include bodies such as:

Some consultancies and environmental organisations also employ water quality scientists.

Look for job vacancies at:

Useful directories for contact details include the ENDS Environmental Consultancy Directory.

Professional development

Employers generally provide on-the-job training with support from more senior water quality scientists. Formal training is usually provided for procedural and regulatory issues.

Continuing professional development (CPD) plays an important part in your career and also helps you to keep up to date with changes to water quality regulations and legislation. The CIWEM offers a range of online and instructor-led CPD training and events. Find out more at CIWEM training.

Once you've gained enough experience, usually not less than five years, you can apply for chartered membership of CIWEM. Once you become chartered, providing you have the required qualifications and experience, you can also apply for registration as a Chartered Scientist (CSci). If you are an experienced professional, but don't have the required qualifications, you can apply for CSci through CIWEM's work-based learning route.

Career prospects

You may decide you're happy to remain in your role, developing your own expertise and authority within a specialist area.

There are, however, some opportunities to move into a water operations manager role, with responsibility for managing a range of facilities within the water industry and coordinating and directing all activities relating to water operations. There is stiff competition for these posts, particularly among graduates recruited onto graduate training schemes.

Other management roles include the management and supervision of sampling, treatment and laboratory facilities, and staff. There are opportunities to manage water quality teams or to move into more generic environmental protection roles or national policy and research work within bodies such as the Environment Agency, Natural Resources Wales, or the Scottish Environment Protection Agency.

Once you have significant experience in a senior role, you can apply to become a Fellow of the CIWEM (FCIWEM). This recognition of your skills and achievements is likely to bring you the most rewarding opportunities.

Experienced water quality scientists in a senior role, who are recognised as an expert in their field, may move into consultancy, providing services to water organisations, both nationally and internationally.

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