Just asking for a target of ...
Published by Richard Lasker, Puget Environmental Group, Inc. - Director
Just asking for a target of "TDS" is equal to asking "how many minerals should I consume." The source, elements and "other" components of TDS are equally of issue then just the number. For example: if the water has a TDS of 300 and all of it is chromium salts is it delicious & safe? How about 400 TDS of Roundup herbicide? 400 TDS of copper salts? So; you ask a question that is dangerous in that it doesn't have significant information for someone to answer. 400 TDS of calcium/,magnesium carbonates is great drinking water....so the answer to your question is to spend some time understanding the source of the water and make your own conclusions from that: river? If river: who is upstream/what industry is upstream? Well-water? If well: type of aquifer, depth of well, rock formation surrounding well. Lake? man-made or natural? Deep water or shallow?
I think you get the picture.... knowledge is power.