Andy Pierce
Member
@dw1305 is probably the right person for this one!
I'm looking at my 2021 water quality report for an area 8 miles southeast of Cambridge: Linton water quality zone. The water is very hard with dGH 17.8 at 317 ppm CaCO3. The water has mild salinity of 612 uS/cm which I convert approximately to 306 ppm overall. They list the pH as 7.40. So then from the pH and the dGH at a room temperature of 20C we can calculate dissolved CO2=15.664*dGH*10^(6.34-pH) which comes out to 24.3 ppm.
Can the dissolved CO2 at 24.3 ppm possibly be that high straight out of the tap? I don't see any fizzy carbonation bubbles... How do they get the pH so low with such a lot of carbonate in the system; where am I going wrong with this one...?
I'm looking at my 2021 water quality report for an area 8 miles southeast of Cambridge: Linton water quality zone. The water is very hard with dGH 17.8 at 317 ppm CaCO3. The water has mild salinity of 612 uS/cm which I convert approximately to 306 ppm overall. They list the pH as 7.40. So then from the pH and the dGH at a room temperature of 20C we can calculate dissolved CO2=15.664*dGH*10^(6.34-pH) which comes out to 24.3 ppm.
Can the dissolved CO2 at 24.3 ppm possibly be that high straight out of the tap? I don't see any fizzy carbonation bubbles... How do they get the pH so low with such a lot of carbonate in the system; where am I going wrong with this one...?