Any municipal water source approved by the Department of Health can be used in concrete with no additional testing. Water sources or blends of concrete wash water not approved by the Department of Health can still be used provided they do not contain deleterious amounts of ions such as alkali, chloride, and sulfates, or total solids. Item 421 lists the requirements that water from non-municipal sources must meet. In addition to the chemical compositions of the water, the effect that non-municipal water sources have on concrete setting time and strength must also be evaluated.