You're the author? I think you have a parsing issue. I'm looking at barium: apparently the color-coding only looks at the number, discarding the unit (ug vs. mg

You're the author? I think you have a parsing issue. I'm looking at barium: apparently the color-coding only looks at the number, discarding the unit (ug vs. mg). The MCL is 1 mg/L; for a measurement of "514 ug/L" (=0.514 mg/L), you code it as >100x Federal Threshold: http://i.imgur.com/Vd75wlo.png http://i.imgur.com/Vd75wlo.png And for more confirmation, on the sidebar, the 0.220 mg/L measurement maps to the minimum of "0.220" (out of the 2 measurements in the field of view), and the 514 ug/L maps to the maximum "514.000". They should be 0.220 and 0.514 (mg/L). Your map shows severe Barium pollution over the whole region, but that's just this error repeated many times. http://i.imgur.com/bDQ3Lie.png http://i.imgur.com/bDQ3Lie.png update: And zinc too. The severe zinc pollution all over the map is also an error: http://i.imgur.com/8RoXpy8.jpg http://i.imgur.com/8RoXpy8.jpg update: Copper too: http://i.imgur.com/ZZsm02G.jpg http://i.imgur.com/ZZsm02G.jpg