The US uses a different scale from the UK. A bit like measuring tank volume in gallons and litres. The US uses nitrate -N while the the UK uses nitrate-NO3. And our test kits use nitrate-NO3.
10 ppm nitrate-N (USA) = 44.27 ppm nitrate-NO3 (UK). And if the UK upper limit was measured by the same scale as the US it would be 11.29. So in reality the US legal limit is only a tiny bit less than the UK.
@JennySolano that 5 ppm for your nitrate - is that what your water provider says or what your test kit says?
@Leemw87 I have just found where Yorkshire Water hide their water quality report! Remember the page where you found your hardness? It's lower down on the same page. If you enter your postcode here
and look below the hardness info, you'll find what their expensive lab equipment says your nitrate is.
10 ppm nitrate-N (USA) = 44.27 ppm nitrate-NO3 (UK). And if the UK upper limit was measured by the same scale as the US it would be 11.29. So in reality the US legal limit is only a tiny bit less than the UK.
@JennySolano that 5 ppm for your nitrate - is that what your water provider says or what your test kit says?
@Leemw87 I have just found where Yorkshire Water hide their water quality report! Remember the page where you found your hardness? It's lower down on the same page. If you enter your postcode here
Yorkshire Water - Check your water hardness
Providing essential water and waste water services is only the start of what we do. Find out where we are now and where we plan to be in 25 years time. Do you have hard water? Find out more about the water hardness in your area with Yorkshire Water. Water hardness is the measure of the...
www.yorkshirewater.com