PWNT

PWNT, part of the Nijhuis Saur Industries (NSI) group, delivers cutting-edge solutions and consultancy services to meet the diverse needs of water utilities worldwide. Building on PWN’s rich legacy, PWNT leverages over 100 years of expertise to drive innovation in water treatment, with a strong focus on drinking water.

Our pioneering technologies, including SIX^® (Suspended Ion Exchange), ILCA^® (Inline Coagulation and Adsorption), and CeraMac^® (Ceramic Membrane Microfiltration), offer efficient, sustainable, and cost-effective treatment solutions for various water sources, ensuring the delivery of high-quality drinking water.

Beyond technology development, PWNT offers comprehensive consultancy services in the study, design, optimization, and integration of water treatment technologies. PWNT is well-equipped to provide expert guidance on both emerging and traditional processes, such as pellet softening, advanced oxidation, GAC filtration, and coagulation.

With a strong global presence, PWNT has successfully implemented large-scale projects and pilot installations across the world. Our innovative technologies are trusted by water utilities for their ability to address complex water quality challenges and adapt to diverse environmental conditions.

Headquartered in the Netherlands, PWNT continues to foster strong partnerships with leading universities and global companies, committed to advancing sustainable water treatment technologies and helping utilities achieve their water quality goals.

Bonnycraig WTW (2024)

Ceramic membrane technology and modular build deliveries innovative solution that provides significant benefits and efficiencies

Witches Oak WTW: Green Recovery - Decarbonising Water Resources (2024)

The challenges of designing and constructing the Witches Oak programme of works on multiple sites to a condensed timescale

Alderney WTW (2023)

In 2015, Bournemouth Water was acquired by Pennon Group, who already owned South West Water (SWW). Alderney WTW, located in the north of Bournemouth, is a strategically important water treatment works that supply high quality drinking water to approximately 375,000 customers – nearly 75% of the homes and businesses in Bournemouth Water’s operational area. Alderney […]

Hampton Loade WTW (2023)

Hampton Loade WTW treats raw water from Chelmarsh Reservoir, located approximately two miles north-west of the site. The reservoir is supplied by the river intake pumps located within the intake building immediately adjacent to the River Severn. The maximum flow that can gravitate to the works from the reservoir is 130-135 megalitres/day (MLD). To increase […]

Witches Oak WTW: Green Recovery - Decarbonising Water Resources (2023)

In the summer of 2020, the water industry was set a challenge by its regulators to identify ways to support the country’s green economic recovery from Covid-19. Severn Trent responded with a number of proposed programmes, including Decarbonising Water Resources (DWR), the subject of this paper. The objective of the DWR programme was to provide […]

Mayflower WTW (2016)

South West Water (SWW) has started construction on a new £60m state-of-the-art water treatment works in Devon, the company’s flagship project in its 2015-2020 business plan. Mayflower WTW will use cutting-edge treatment processes, designed and developed by leading Dutch water technology company PWNT and will serve around 250,000 customers in Plymouth and the surrounding area. […]

What we do:

Designers: Mechanical Design | Process Design

Wastewater Treatment: Tertiary Treatment | Filtration | Ceramic Membranes | Granular Activated Carbon