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Stormwater is water that comes from rainfall – it either soaks into exposed soil or remains on top of impervious surfaces, like pavement or rooftops. Stormwater will eventually evaporate off a level surface, but most often it flows as runoff to another location. Stormwater designed drains typically run into our ecosystem, however, the rainfall collects contaminants on these urban surfaces and carries the contaminants into the environment.  

This can have a negative impact on the surrounding environment and wildlife. Our team is experienced in monitoring, testing and sampling stormwater runoff.  

What do we test for?


Total Petroleum Hydrocarbons (organics)

Heavy metals dissolved and total

(copper, lead, zinc, chromium and nickel)

Total Suspended Solids

Related Testing Services

Lady drinking water from a glass

Drinking Water

We’re registered with the Taumata Arowai and internationally accredited to carry out a range of tests on water sources. Read more here.

Wastewater being treated at a water recycling plant


We perform a variety of tests on wastewater for treatment plant operators across the country. Read about what we can test for here.

Heavy rain water going down a storm drain


Rainfall that does not evaporate can pick up contaminants and end up in waterways. We perform a variety of tests on stormwater. Read more here.

Guy on a canoe at sunrise, paddling in water

Environmental & Recreational Waters

Our microbiology and chemistry testing on these types of waters can be tailored to our customers’ needs. Read more here.


Trade Waste Discharge

We carry out confidential analysis for customers who need to comply with local authority discharge resource consents. Read more here.

Conveyor belt, juice in glass bottles on beverage plant or factory interior, industrial manufacturing production line

Commercial & Industrial Process Water

We do test for agriculture, horticulture and viticulture businesses that want to understand the safety of the water they are using. Read more here.