Table 1 shows the results of one-way ANOVA tests comparing the mean particle diameter at each sampling point with the following point for the acid and base WWT systems. Statistical significance was noted only in a few cases and was inconsistent when comparing the same treatment step across differentweeks. Additionally, no systematic trend in nanoparticle diameter occurs in the WWT system, which indicates a relatively insignificant rate of dissolution or flocculation between entry into the systemand discharge. Consequently, future studies