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For more information on our Water & Wastewater Solutions services, get in touch with

...

Samuel Frisby

Business Manager

Hundreds of 'Excellent' reviews

Water & Wastewater Solutions Executive Search

Helping Water & Wastewater Solutions companies unlock their next stage of growth

Specialisms We Cover

Capital Equipment Chemical Water Treatment Instrumentation Mobile Water Services Paper Chemistry PFAS Remediation/ Destruction Smart Water

The global water and wastewater market is valued at over USD 300 billion and continues to expand, driven by infrastructure renewal, regulatory pressure, climate resilience, and increasing investment in water reuse and digital water technologies.

Water and wastewater infrastructure underpins public health, industrial productivity, and environmental sustainability worldwide. As populations grow, urbanisation accelerates, and climate volatility places increasing strain on water resources, the sector faces mounting pressure to modernise ageing networks, improve efficiency, and deliver resilient, sustainable systems. Innovation across treatment technologies, smart water solutions, and resource recovery is reshaping how water is managed across the value chain.

Our commitment to the water and wastewater market sets us apart from traditional executive search firms. We continuously refine our approach, combining sector expertise, market insight, and technology-led processes to deliver fast, thorough, and effective search solutions. By aligning high-calibre technical and commercial talent with strategic objectives, we help our clients build the capability required to modernise infrastructure, scale sustainably, and secure long-term water resilience.

Water systems support communities, industry, and growth.

Organizations in this sector design, operate, and maintain infrastructure that must perform continuously under regulatory, environmental, and operational pressure. Long asset lifecycles, compliance requirements, and sustainability targets place strong emphasis on engineering judgement and operational discipline.

Our consultants specialise by geographic region and therefore have tailored, in-depth networks within their area of focus. This niche approach results in our clients being delivered the strongest results for each specific search we work on and is the reason for our impeccable track record within the industry.
Download the Water & Wastewater Solutions Brochure

Download our brochure

Learn more about our services, approach and the sectors we operate in.

Did you know?

Hiring the wrong candidate costs more than just time—it can waste salary, training resources, and opportunities. The Department of Labour estimates a bad hire can cost up to 30% of the role’s first-year earnings.

We hire right

Organisations are often reluctant to use external recruiters due the percieved cost. Think about it like this - what financial benefit could a top candidate bring to your business unit? You could make a 100x return on your investment.

  • 97% Placement Rate 1
  • 1.78:1 CVs Sent to Interviews 2
  • Avg. 32 Day Engagement to Placement 3

1. Based on all roles engaged on by a client on an exclusive basis from Jan 4 2025 - Dec 31 2025.

2. All CVs Sent from Jan 4 2025 - Dec 31 2025.

3. From Jan 4 2025 - Dec 31 2025.

Stats

387 active opportunities
1,908 placements made across 25 sectors
262,736 companies in our CRM

"At Irving Knight, we don't just fill positions; we build lasting partnerships. Our commitment to understanding your unique needs ensures that we deliver leaders who drive success and embody your company's values. When it comes to identifying the high-performers of tomorrow, there is no one-size-fits-all solution. Our bespoke approach ensures every search is personal, diverse, and tailored from the ground up — delivering an individual, unrivalled experience for both clients and candidates. "

- Joe Davey, Group CEO of Irving Knight Group

Rated Excellent on Trustpilot

Andreia Sa

Director, Italy

I would like to sincerely thank Evan Ball for all the support throughout the process. He provided assistance at diffe...

Rated Excellent on Trustpilot

Ashley Maclean

Systems Sales Engineer, South Carolina

Jack Purnell with Irving Knight was the best recruiter I’ve worked with - by far. He communicated clearly, was respec...

Rated Excellent on Trustpilot

Andrew Coutts

Director Global Strategy, US

First Class Service Emma shared details of a relevant opportunity and did a great job helping to manage lengthy nego...

Rated Excellent on Trustpilot

Veronica Hagborg

Senior Director Global HR, Sweden

I have had the opportunity to co-operate with Joseph in a process and I found him very proactive in keeping me inform...

Rated Excellent on Trustpilot

Michael Wilson

Senior Account Manager

Working with Joseph was a seamless and positive experience from our first contact along with the various steps of the...

Rated Excellent on Trustpilot

Nika Kuchaidze

Senior Continuous Improvement Chemist, US

It was a pleasure working with Joseph on transitioning to a position with a new company. Communication was prompt,...

Rated Excellent on Trustpilot

Valeria Pozzi

Procurement Category Manager, Italy

Working with Oliver has been a real pleasure!His highly professionalism and transparency made me comfortable to consi...

Rated Excellent on Trustpilot

Daniel Villanueva

Key Account Manager

Joseph is a dedicated professional and a stand up person to work with. His patience and his understanding certainly s...

Rated Excellent on Trustpilot

Michel Cas

Sales Manager, France

Incredibly human oriented executive search, candidates handled with great care and respect, precise and concise infor...

Rated Excellent on Trustpilot

Kyle Corrigan

Technical Account Manager

It was a pleasure working with Joseph when searching for the next chapter in my career. Proactive, energetic and prof...

Rated Excellent on Trustpilot

Dipen Shah

Account Manager, Canada

I was assisted by Aiden Kerr on getting a new job in the chemical industry. He was fantastic in terms of timing, comm...

Rated Excellent on Trustpilot

Kerry Maye

Regional Sales Manager

Working with Joseph was a wonderfully positive experience from our first contact, through acceptance of my job offer....

Rated Excellent on Trustpilot

Todd McBroom

District Sales Mgr, US

Great Experience!! This was my first time dealing with a recuiter and could not have been a better experience. Jack ...

Rated Excellent on Trustpilot

Joerg Schlagmann

Senior Global Manager

Great expert: supportive, challenging and always empowered for his customers and his work! Not more to say: just exce...

Rated Excellent on Trustpilot

Jeff Borchardt

Director of Planning, US

Mr. Clay was a wonderful recruiter. He was communicative and helped keep me informed through the process. He also fou...

Rated Excellent on Trustpilot

Tim Staniels

Territory Sales Manager, US

Joseph was very easy to work with. He was motivated and attentive during his recruitment process, very responsive to ...

Rated Excellent on Trustpilot

Kay Witte

Global Director Performance Excellence

Joseph was instrumental in making my last professional opportunity happen. He was easy to work with, responsive, and ...

Rated Excellent on Trustpilot

Lucas Quadflieg

Sales Manager, Netherlands

Good vibes on finding a new opportunity... I was contacted by Aidan Kerr for a position of Sales Manager Benelux. Af...

Rated Excellent on Trustpilot

Nathan Radue

Channel Marketing Manager, US

Oliver is a thorough and effective recruiter, representing both sides with character and solid communication. He appr...

Rated Excellent on Trustpilot

Guillermo Leal

Global Director of Pricing, US

I've worked with a few recruiters in the past but Oliver surprised me not only for his professionalism, excellent com...

Rated Excellent on Trustpilot

Andreia Sa

Director, Italy

I would like to sincerely thank Evan Ball for all the support throughout the process. He provided assistance at diffe...

Rated Excellent on Trustpilot

Ashley Maclean

Systems Sales Engineer, South Carolina

Jack Purnell with Irving Knight was the best recruiter I’ve worked with - by far. He communicated clearly, was respec...

Rated Excellent on Trustpilot

Andrew Coutts

Director Global Strategy, US

First Class Service Emma shared details of a relevant opportunity and did a great job helping to manage lengthy nego...

Rated Excellent on Trustpilot

Veronica Hagborg

Senior Director Global HR, Sweden

I have had the opportunity to co-operate with Joseph in a process and I found him very proactive in keeping me inform...

Rated Excellent on Trustpilot

Michael Wilson

Senior Account Manager

Working with Joseph was a seamless and positive experience from our first contact along with the various steps of the...

Rated Excellent on Trustpilot

Nika Kuchaidze

Senior Continuous Improvement Chemist, US

It was a pleasure working with Joseph on transitioning to a position with a new company. Communication was prompt,...

Rated Excellent on Trustpilot

Valeria Pozzi

Procurement Category Manager, Italy

Working with Oliver has been a real pleasure!His highly professionalism and transparency made me comfortable to consi...

Rated Excellent on Trustpilot

Daniel Villanueva

Key Account Manager

Joseph is a dedicated professional and a stand up person to work with. His patience and his understanding certainly s...

Rated Excellent on Trustpilot

Michel Cas

Sales Manager, France

Incredibly human oriented executive search, candidates handled with great care and respect, precise and concise infor...

Rated Excellent on Trustpilot

Kyle Corrigan

Technical Account Manager

It was a pleasure working with Joseph when searching for the next chapter in my career. Proactive, energetic and prof...

Rated Excellent on Trustpilot

Dipen Shah

Account Manager, Canada

I was assisted by Aiden Kerr on getting a new job in the chemical industry. He was fantastic in terms of timing, comm...

Rated Excellent on Trustpilot

Kerry Maye

Regional Sales Manager

Working with Joseph was a wonderfully positive experience from our first contact, through acceptance of my job offer....

Rated Excellent on Trustpilot

Todd McBroom

District Sales Mgr, US

Great Experience!! This was my first time dealing with a recuiter and could not have been a better experience. Jack ...

Rated Excellent on Trustpilot

Joerg Schlagmann

Senior Global Manager

Great expert: supportive, challenging and always empowered for his customers and his work! Not more to say: just exce...

Rated Excellent on Trustpilot

Jeff Borchardt

Director of Planning, US

Mr. Clay was a wonderful recruiter. He was communicative and helped keep me informed through the process. He also fou...

Rated Excellent on Trustpilot

Tim Staniels

Territory Sales Manager, US

Joseph was very easy to work with. He was motivated and attentive during his recruitment process, very responsive to ...

Rated Excellent on Trustpilot

Kay Witte

Global Director Performance Excellence

Joseph was instrumental in making my last professional opportunity happen. He was easy to work with, responsive, and ...

Rated Excellent on Trustpilot

Lucas Quadflieg

Sales Manager, Netherlands

Good vibes on finding a new opportunity... I was contacted by Aidan Kerr for a position of Sales Manager Benelux. Af...

Rated Excellent on Trustpilot

Nathan Radue

Channel Marketing Manager, US

Oliver is a thorough and effective recruiter, representing both sides with character and solid communication. He appr...

Rated Excellent on Trustpilot

Guillermo Leal

Global Director of Pricing, US

I've worked with a few recruiters in the past but Oliver surprised me not only for his professionalism, excellent com...

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Approach

Explore Our Approach

Why Us

Why Irving Knight

Trustpilot

FAQs

We’re here to make Executive Search easy to understand. Find answers to the most common questions below.

Our priority is fit, not speed. We take time to understand your background, goals, and motivations, then provide clear insight into each opportunity so you’re only considered for roles that truly align with your experience and ambitions.

We specialise in senior, specialist, and leadership appointments across the markets we serve. Our focus is on roles where experience, judgement, and cultural alignment are critical — typically mid- to senior-level management through to executive and board appointments.

You’ll gain honest market insight, access to high-quality opportunities, and clear guidance throughout the process. Our aim is simple: to help you make the right move, at the right time, with confidence.

No. Our services are completely free for candidates. We are retained by our client partners to manage their hiring processes, meaning there is never a cost to you at any stage.

Our role is to represent your interests professionally, provide guidance throughout the process, and help you assess opportunities objectively — without any financial obligation.

No — if anything, it gives you an advantage. We provide context, insight, and advocacy that ensure your experience and motivations are clearly understood from the outset. Our role is to strengthen your candidacy and guide you through a transparent, well-managed process.

We operate as a retained, partnership-led search firm rather than a transactional recruiter. That means fewer searches, deeper engagement, and a far higher level of commitment to outcomes. By combining sector specialism, market intelligence, and a disciplined search methodology, we deliver hires that are aligned not only to role requirements, but to culture, strategy, and long-term growth plans.

We don’t rely on databases or job advertising alone. Our searches are driven by proactive market mapping, targeted outreach, and insight gained from long-standing sector networks. Candidates are assessed on capability, leadership style, cultural alignment, and long-term potential — not just CV fit — ensuring a robust and well-informed shortlist.

Confidentiality is fundamental to how we operate. Every search is handled with discretion, clear communication, and controlled market engagement. As your representative in the market, we protect your brand, manage messaging carefully, and ensure sensitive information is only shared when appropriate — safeguarding both your business and your candidates throughout the process.

Our retained model is designed to deliver outcomes, not volume. Because we invest the time to fully understand the role, the business, and the wider context, we achieve a consistently high completion rate across our searches. More importantly, our focus is on long-term retention and impact, not short-term placement metrics.

While our process is designed to minimise risk, we recognise that circumstances can change. In the rare event a placement doesn’t succeed, we work closely with our client to address the situation and agree the most appropriate next steps. Our commitment is to the partnership and the outcome — not just the initial hire

Let's talk

Contact Irving Knight Group for Executive Search Enquiries