Minerals and chemicals in the City of Alpena drinking water taken off the city’s web site:

A slurry is a mixture of solids denser than water suspended in liquid, usually water. The most common use of slurry is as a means of transporting solids, the liquid being a carrier that is pumped on a device such as a centrifugal pump. The size of solid particles may vary from 1 micron up to hundreds of millimeters.

Minerals currently proven to be in the city water supply – nine minerals and seven forms of fluoride.

(1) Nitrate

(2) Radium

(3) Barium

(4) Fluoride

(5) Cadmium

(6) Chromium

(7) Selenium

(8) Copper

(9) Lead

(1) Hexafluoropropylene oxide dimer acid

(2) Perfluorobutane sulfonic acid

(3) Perfluorohexane sulfonic acid

(4) Perfluorohexanoic acid

(5) Perfluorononanoic acid

(6) Perfluorooctane sulfonic acid (PFOS)

(7) Perfluorooctanic acid (PFOA)

RICHARD N. OLREE,

Hillman