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rstringer's picture
Last seen: 3 years 10 months ago
Joined: 20/09/13
Got a question for the experts? Ask here.

Is there something you'd like to know that one of our scientists or staff might be able to help with? Ask here.

Don't be shy. If you're thinking of it, chances are someone else is too.

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TTTJH's picture
Last seen: 5 years 7 months ago
Joined: 22/06/14

I had assumed it would be rolled up inside test kit, but there isnt one. I have facitlity to print more if I could just get one, or I have a smartphone if the app is ready to use, in whch case let me now whereI can get a link.

alexandra.k.collis's picture
Last seen: 5 years 3 months ago
Joined: 08/05/14

TTTJH, I tried to attach the link but it doesn't work but hope you've found the data sheet.

alexandra.k.collis's picture
Last seen: 5 years 3 months ago
Joined: 08/05/14


I have just completed my first water tests and seen your message.  If you go to your profile, click on Upload a Record and at the very bottom of this on-line form, click on the attachment (it's after point 5 Water Quality).  The link is below.



weiweitan's picture
Last seen: 4 years 11 months ago
Joined: 09/05/14


As we are assisting with the data collection and upload, it would be good to have a guideline to ensure we are on the same understanding in order to ensure the data collected and reported is as accurate as possible where we can control.




weiweitan's picture
Last seen: 4 years 11 months ago
Joined: 09/05/14


I have used the test kits on my home drinking water and found that the nitrate level is in btw 0.5-1 and 0.2-0.5. As discussed in our classroom session we cannot look at one parameter in isolation but would like to understand what is the best quality for dinrking water ie what is the benchmark used ?

Appreciate your advice.

elaine's picture
Last seen: 4 years 4 months ago
Joined: 15/05/14


Thanks for that interesting question Weiweitan. The nitrate concentration in surface water is normally low but can increase as a result of agricultural and landfill runoff or contamination with human or animal wastes. This fluctuates with the season and may increase when the river is fed by nitrate-rich groundwater. Nitrate concentrations have gradually increased in many European countries in the last few decades and have sometimes doubled over the past 20 years. There are very strict standards for drinking water laid out in the Drinking Water Directive (Council Directive 98/83/EC) for regulating this, with the quality of drinking water in England and Wales the subject of legally enforceable standards regulated by the Drinking Water Inspectorate (DWI). The acceptable levels for nitrate are 50mg/l, which when converted to nitrate-nitrogen as measured by your kits is <11.28 mg/l.. See these links for further information





marwaelzini's picture
Last seen: 1 year 5 months ago
Joined: 24/10/14

Hi Dears,

Thanks for the initiative.

Actually I'd like to know as the population of the world keeps growing; more pressure is put on water resources. In the coming years, what do you think the most serious problem will be concerning our water situation? Will it be water shortages, water made undrinkable by pollution, or will there not be any major water problems at all?

As a citizens what are our roles and how we can help to preserve the water?

Thanks in advance for your prompt response.

Kind regards, Marwa

je.x.martin's picture
Last seen: 3 years 1 week ago
Joined: 01/10/14

Hello - I live in CT in the US.  When I test during the summer in a local pond, the nitrogen levels are low (usually .2 or less and definitely .5 or less).   I expected them to be higher due to fertilizer run-off.   However, when I am testing now - during the winter months - the nitrogen is higher, between 1-5 depending on the day.    Does it have something to do with less plant life in the water?   Or something else?

Thank you for any information,

JE Martin

eanderson's picture
Last seen: 1 year 4 months ago
Joined: 11/09/15

Hi JE Martin,


I work on the FreshWater Watch team and the scientists have said that your observations are a familiar trend that we have also witnessed in the UK pond data. Of course, we can’t be absolutely sure at this specific site, but the most likely explanation is that during the growing season the higher plants (reeds, lilies, submerged vegetation etc.) and phytoplankton, algae are using up nitrate within the water column. They’ll most likely proliferate until either the nitrate or the phosphate is depleted. Phosphate measurements at this site are consistently low so probably they are phosphate limited here. Once plants begin to die-back, both the gradual accrual of nutrients from the catchment, in the absence of plant growth and the breakdown of the seasons growth will relatively increase the nitrate concentration.


Thanks for your water sample testing so far, keep up the great work!


harryrai's picture
Last seen: 1 year 11 months ago
Joined: 15/04/16
Hi, I was wondering with regarding to UK water bodies that have been tested by the EPA, do these include canals, or is it only the rivers that have been checked?
donidave's picture
Last seen: 3 years 8 months ago
Joined: 10/06/16


Myself and colleagues been using citizen science data mostly of rainfall, river level and groundwater levels​ for investigating floods and droughts and have a problem with convincing formal data collection institutions (i.e. meteorological institutions and government ministries) and academics that the data is of good quality even though it wasn't collected by professionals.  We have recently published this paper to help with this debate which I thought could be useful to others who find themselves in a similar situation: 
Honestly this wasn't just a self-promotion comment, I am intested to know if you face the same issue with water quality data and how you overcome this?

Best wishes