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Prime modular water treatment setup operating on a civil construction site

Water Treatment

Mobile, modular water treatment for civil and construction projects – set up around your water and discharge needs.

Find a setup that fits

Different site water calls for different treatment. Explore our water treatment options below – or combine settling, dosing, pH correction and monitoring to suit your project.

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In The Field

At Prime Fluid Management, experience talks. Take a look at some of our recent projects. 
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Water Treatment
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Water Treatment, Taranaki
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Water Treatment, Bay of Plenty
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Water Treatment
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Water Treatment, Wellington
Tailored solutions

Set up around your project

Use settling on its own – or combine dosing, pH correction, monitoring and reporting to match your site water and discharge requirements.

Modular systems make it easier to scale or adapt the setup as conditions change.

HL40 lamella clarifier and pH correction unit set up together on site
Practical know-how

There when you need us

Work with our team from design and documentation through to setup and commissioning – with remote or on-location support throughout the project. We focus on practical advice and a setup that works for your site.
Prime technician inspecting water treatment equipment on site
Water conditions

When site water needs treatment

Site water from civil, construction and quarrying projects may need treatment before discharge or reuse. Requirements vary by region, receiving environment and project conditions under the Resource Management Act and relevant regional rules.

Prime helps manage sediment, elevated pH, hydrocarbons and concrete washout, from straightforward settling to multi-stage setups with dosing, monitoring and reporting.

Two Prime HL50 lamella clarifiers operating together at CentrePort in Wellington

All models on this page are available for hire

From complex projects to emergency response, nationwide.
MAKE A HIRE ENQUIRY

FAQs about water treatment

Do I need council consent to discharge treated water on site?

Yes. All site discharge must meet your local regional council’s consent conditions under the Resource Management Act. These consents define limits for discharge, turbidity, suspended solids, pH, and hydrocarbons. We help review requirements during the planning stage before deployment.

How does remote water quality monitoring work?

Our water-quality monitoring units are designed to be installed alongside treatment systems. They continuously measure parameters like pH, turbidity, dissolved oxygen, flow rate, and contaminants. Data is transmitted via cloud, Wi‑Fi, cellular, satellite, or local datalogger. Alerts can be configured to notify by SMS, email, or in-app messages. We also regularly integrate monitoring into Council SCADA and BMS systems.

Can these units operate off‑grid?

Yes. The monitoring units can be fully solar powered long term or wired into site power. Rugged, weatherproof housings ensure reliable operation even in remote locations.

Are your settling tanks effective at removing both solids and oil?

Yes. We offer a range of settling tanks, including simple baffle tanks, hybrid, and incline plate settlement (lamella clarifiers). They are designed for rapid removal of sediment and sludge and include built‑in oil/hydrocarbon separators. Options include standard baffle, or hybrid and inclined plate (lamella) settling tanks, with capacities ranging from 4 m³ to 50 m³ and adjustable inlet/outlet fittings.

Does your pH correction solution support different dosing methods?

Yes. We offer both batch dosing systems and proportional dosing for continuous flow. Depending on site needs, units can be mobile or fixed and can be combined modularly with other treatments for full compliance.

"They brought their mechanics, they didn't just dump it and leave…. couldn't have done it without them to be honest."
Mark CadwalladerHawkes Bay Regional Council
"This sort of unique system you set up is what sets you apart from others in the market"
Jacob WarmsleyProject Manager - Brian Perry Civil
"I had an amazing experience with Prime at the Transmission Gully... will recommend you guys anytime and anywhere."
Peter FisherDirector - Southern Sprite
"You guys had our backs from the get-go and stood beside us and persevered."
DaveOps Manager - Resin & Wax Holdings
"We called for a different type of solution…... we were pretty happy with what's been delivered"
Rob KerrProject Director - Waimakarri District Council
"Prime supplied us with the best solution for hire and the instant availability was what we needed… we certainly will be using them in the future"
Priscilla EllmersWastewater Supervisor - Veolia NZ
"I have used Prime for years, they have the best gear – hands down – no exceptions."
Charlie HallProject Manager - McConnell Dowell
"If Prime don’t have the exact solution you need, they will get it, build it, create it, or invent it."
Charlie HallProject Manager - McConnell Dowell