Missouri DNR Water Quality Report Consumer Confidence
Click on Water District for full report
ST Louis City and County Missouri
ST Charles County Missouri
Lincoln County Missouri
Washington County Missouri
WASHINGTON COUNTY PWSD 1
220 ppm → 12.9 gpg
276  ppm → 16.1 gpg
286 ppm → 16.7 gpg
303 ppm → 17.7 gpg
303 ppm → 17.7 gpg
286 ppm → 16.7 gpg
396 ppm → 23.2  gpg
243 ppm → 14.2 gpg
286 ppm → 16.7 gpg
100-170  ppm → 6–10 gpg
285 ppm → 16.7 gpg
76–180 ppm → 4–10 gpg
1421-184  ppm → 8.3-10.8 gpg
152 ppm → 8.9 gpg
275 ppm → 16.1 gpg
173 ppm → 10.1 gpg
267 ppm → 15.6 gpg
296 ppm → 17.3 gpg
317 ppm → 17.1 gpg
317 ppm → 17.1 gpg
270-297ppm → 15.8-17.4 gpg
236-274 ppm → 13.8-16  gpg
216 ppm → 5.7 gpg
88 ppm → 9.8 gpg
128 ppm → 7.5 gpg
129-332  ppm → 7.5 19.4  gpg
274 ppm → 16 gpg
Jefferson County Missouri
Soft: 0-60 mg/L or 0-3.5 grains per gallon (gpg).
Moderately hard: 61-120 mg/L or 3.5-7 gpg.
Hard: 121-180 mg/L or 7-10.5 gpg.
Very hard: Over 180 mg/L or over 10.5 gpg.
Extremely hard: Over 15 gpg.