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What we measure

Dissolved oxygen, temperature, pH, turbidity, ammonium and conductivity. 
The sensor array can be changed under our service if the required parameter set changes.
 

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Calibration and maintenance

Monitors are calibrated at our service centre against traceable standards, under processes designed to ISO/IEC 17025. They’re swapped on site at the four-week interval the interim standard sets, or to your programme’s schedule. Before issue, every monitor is batch-tested against a reference instrument.
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Siting

WaQA Float mounts mid-river on a float and anchor, from the bank on a ground screw, from a bridge parapet, or on a slack line. The downstream monitor goes where mixing is complete, whatever the bank access at that point.
Housings are IP68.

WaQA Kiosk provides a bankside option, with the same service level, and security of communications.

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Data

Each monitor stores six months of 15-minute readings onboard and uploads when the connection returns.
Raw data is retained unaltered alongside the validated dataset.

Water quality can be viewed against rainfall and network data, so a spill’s effect on the receiving water can be separated from background conditions.

An optional AW-108 camera records the outfall, giving a visual record of when each discharge started and stopped.

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Fleet and servicing

Site are serviced from our local hubs across New Zealand, the UK, Ireland, and Australia. Small investigations run from our general fleet.

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Talk to our UK and Ireland team

For references and case studies, project scopes and site-count modelling, contact our team.