San Francisco water quality report 2017

[SanPancho]

anybody updated their software lately? i have bru'n water and realized i hadnt checked for last years report so i found it and updated the numbers in the software.

im at nearly 0.5 cation difference, which i guess is technically ok but before it was usually much less.

i guess the biggest one is that the report shows TDS of 76, but calculated number is 126. seems like large discrepancy.

am i missing something? i got bicarbonate and carbonate numbers from the little chart down on lines 26-28 that uses alkalinity/hardness vs ph to estimate.

any ideas or help appreciated.

 

[mabrungard]

Isn't most of SFO on Hetch Hetchy water? From what I've seen, it's almost Pilsen-quality water.

 

[SanPancho]

But since the drought got bad they’re starting to supplement a lot more with groundwater. Still very soft, TDS is like 74 per report. But software is telling me it’s 114 or something like that. Not sure what I’ve got wrong.

 

[ajdelange]

Don't know. Just know its a favorite when checking in with Bay Area Approach.