Testing the water

I'm here to test the water

Some jobs are about direct gardening, and some about measuring the fruits of our various labours, in this case the water quality of our adjoining creek. Susan and Michael looked after the practical work today, while Fred and I donned our surgical gloves and got analysing a sample of our stream water. It took a full hour to complete the streamwatch tests. Here’s Dr Fred, gathering today’s sample. The area we’re sampling is downstream from our work on the creek and also downstream of our veggie growing activities. So its a great place to find out if, on balance, we’re promoting the health of our little section of waterway.

…………………………………………………..……oooOOOOOOOooo…………………………………………………..

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Here are today’s results

Fred gathering the water sample

Temperature: 7.5 C (cold)

Turbidity: 10 NTU (clear)

pH (potential Hydrogen) : 6 (very slightly acidic)

Electrical Conductivity (tests salts) : 110 µS/cm (not very salty)

Available Phosphate: 0.03 mg/L (I think that’s quite low)

dissolved oxygen (DO) mg/L: 6.4

dissolved oxygen (DO) % saturation: about 56%

Don’t know what some of those things are?

Here ‘s more information about some of the less commonly used units of measure.

mg/L = milligrams per Litre – there are a thousand milligrams in a gram

µS/cm = microSiemens per centimeter – a microSiemen is the unit measure of electrical conductivity
So for all those who rocked for a social at lunchtime, this is what we were peering at.
There are many groups across the region, so if you’d like to know more about the work of Streamwatch in your area, check out their website. See you next Friday.
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