How to interpret a municipal water report
There are a few threads here mentioning the impact of tap water minerals, hardness, and ph on container plants grown in the gritty or 5:1:1 mix. I've done some reading on how to intepret water reports, but the available information is oriented toward safe drinking water, rather than adapting soil and fetilizers.
I'm just starting on my first container of 5:1:1, so doing all the research to understand both *what* to do and *why*. In that spirit, I wonder if some experienced grower might be willing to post a short guide to intepreting city water reports. I'm based in San Diego, so trying to intepret a report on Physical, Mineral, and Metal Characteristics or the overall annual drinking water quality report.
I see sentences like this one, which look very informative, but I don't have enough understanding to know how I would adjust my soil or fertilizer accordingly:
"Typically, drinking water in San Diego averages about 15.4 grains per gallon (gr/gal) or 263 parts per million (ppm), and depending upon water demand and area of the City you live can range from 13.4 to 19.0 gr/gal or 229 to 325 ppm."
Thanks in advance for your insight!