# Behaviour of PPCP Substances in a Fluvial Aquifer after Infiltration of Treated Wastewater
## 4 Results
### Evaluation of Qualitative Changes
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**PPCP SUBSTANCES**} & **LABE** & **ISAR** & **IJZERA** & **PO** & **SAVA** & **BRYNICA** & **Morava** \\ \cline{2-7}  & & & & & & & & \\ \hline Metformin & & & & & & & & \\ \hline DEET & & & & & & & & \\ \hline Telmisartan & & & & & & & & \\ \hline Valsartan & & & & & & & & \\ \hline Valsartan acid & & & & & & & & \\ \hline Benzotriazol methyl & & & & & & & & \\ \hline Diclofenac & & & & & & & & \\ \hline Iopromide & & & & & & & & \\ \hline Irbesartan & & & & & & & & \\ \hline Paracetamol & & & & & & & & \\ \hline Gabapentin & & & & & & & & \\ \hline Benzotriazol & & & & & & & & \\ \hline Caffeine & & & & & & & & \\ \hline Iohexol & & & & & & & & \\ \hline Oxypurinol & & & & & & & & \\ \hline Acesulfam & & & & & & & & \\ \hline Lamotrigine & & & & & & & & \\ \hline Saccharin & & & & & & & & \\ \hline Paraxanthine & & & & & & & & \\ \hline Iomeprol & & & & & & & & \\ \hline Ibuprofen & & & & & & & & \\ \hline Clarithromycin & & & & & & & & \\ \hline
4-formylaminoantipyr & & & & & & & & \\ \hline Peniciline G & & & & & & & & \\ \hline Tramadol & & & & & & & & \\ \hline Carbamazepine & & & & & & & & \\ \hline Metoprolol & & & & & & & & \\ \hline PFOS & & & & & & & & \\ \hline Fexofenadine & & & & & & & & \\ \hline Hydrochlorothiazzide & & & & & & & & \\ \hline Bisphenol S & & & & & & & & \\ \hline Carbamazepine-DHH & & & & & & & & \\ \hline Erythromycin & & & & & & & & \\ \hline Celiprolol & & & & & & & & \\ \hline Cotinine & & & & & & & & \\ \hline Iopamidol & & & & & & & & \\ \hline Methylparaben & & & & & & & & \\ \hline Primidone & & & & & & & & \\ \hline Venlafaxine & & & & & & & & \\ \hline Venlafaxine & & & & & & & & \\ \hline O-desmethyl & & & & & & & & \\ \hline Sulfamethoxazole & & & & & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: PPCPs occurrence in six watercourses in CE region (The colour indicates the frequency of occurrence: red in all rivers; orange—the substance was missing in one of the streams; yellow—the substance was missing in two streams; green—the substance was missing in three rivers [21]. concentration in treated wastewater was exhibited by Oxypurniol (13,903 ng/L; Table 1). However, such high difference in content are not always usual. For the other eight substances, average content was higher than 1 ug/L; these were Valsartan acid, Lamotrigine, Diclofenac, Telmisartan, Tramadol, Benzotriazole, Hydrochlorothiazzide, and Sucralose. All these substances can also be found in river water, but in lower orders of magnitude--due to the dilution, degradation, or gradual transformation into others. However, such high differences in content are not always a general rule. In Table 1, the group of substances occur where the differences in PPCP content are smaller, or negligible, between the WWTP outlet and river Morava. These are, for example, 4-formylaminoantipyrine, Gabapentin, or Valsartan; the content of Metformin is more or less equal, with Acesulfame even more in the river water than in the WWTP discharge. The data from Table 1 also shows the significant role of infiltrated water from the Morava River: the adjacent well PZ5 contained a significantly more varied range of PPCP substances before the start of the infiltration experiment than wells CP1 and PZ1 further from the river. The effect of the infiltration of treated wastewater in the VSK well was evidently not manifested in the PZ5 well.