XXXX , is there a better alternative?

@entity9784 @entity524 @entity5148 @entity3782 @entity5 @entity19 @entity3878 @entity8013 @entity5714 @entity35 @entity13492 @entity1787
In brief, the current status of our present knowledge regarding alternatives to free @entity3878 is as follows: 1. Biocidal Capabilities - @entity1787 is the most potent biocide of those under consideration. @entity524 is about on a par with @entity9784 , the most efficient form of free residual @entity3878 . @entity524 , in contrast to free residual @entity3878 , increases in efficiency as pH increases above 6. @entity8013 is a much weaker biocide than @entity9784 ion, the least inefficient form of free residual @entity3878 . 2. Health effects - All of the potential alternatives may cause some adverse health effects. @entity5148 and @entity3782 , two of the reaction products of @entity524 , have been shown to cause a subclinical apparently compensated @entity5714 in @entity35 . On the other hand, according to very preliminary studies, @entity3878 and all of the alternatives except @entity524 have been shown to produce reaction products from substances in water that can initiate @entity5 in @entity19 . Actually, all disinfectants are reactive molecules capable of altering the chemical nature of organic substances present in the water. Thus, the alternative disinfectants question relates to other aspects of water treatment particularly the use of processes for organic precursor removal prior to disinfection. 3. Technology and Economics - The simplest and most economical conversion for many utilities, would be to the use of @entity13492 and the most difficult and expensive would be to the use of @entity1787 . Conversion to @entity524 would be intermediate in cost.
