solid refer to matter suspended or dissolved in water or wastewater. solid may affect water or effluent quality adversely in a number of ways. water with high dissolved solids generally are of inferior palatability and may induce an unfavorable phys-iological reaction in the transient consumer . for these reasons, a limit of 500 mg dissolved solids/L is desirable for drinking waters. Highly mineralized eaters also are unsuitable for many industrial applications. waters high in suspended solids may be esthetically unsatisfactory for such purposes as bathing. Solids analyses are important in the control of biological and physical wastewater treatment processes and for assessing compliance with regulatory
agency wastewater effluent limitrations.