## 3 Results and Discussion  
### Chemical Analysis of Capia Pepper  
When examining the Soluble Solid Content (SSC) values used to determine the ripening time and harvest date of fruits in terms of fruit quality, it was found that raw wastewater applications increased the SSC levels compared to tap water applications. The Amfora variety irrigated with wastewater had the highest SSC value at 9.37%, while the Amfora variety irrigated with tap water had the lowest value at 8.00% (Table 5). [PERSON] et al. (2014) researched peppers grown under greenhouse conditions and irrigated with different wastewater sources to determine growth, yield, and fruit quality [54]. The research found that peppers irrigated with treated wastewater had higher SSC values than control plants. Our research also found a statistically significant effect of wastewater on pH for both varieties, ranging between 5.03 and 5.37. Research on tomato plants irrigated with treated wastewater found no statistically significant difference compared to control groups. However, it was suggested that pH values could vary depending on the variety of characteristics [55]. [PERSON] (2019) discovered that different organic fertilization applications on peppers, specifically the Postal and Elephant Ear varieties, resulted in pH levels ranging from 4.94 to 5.24, consistent with our research [56]. The bell peppers irrigated with wastewater had higher pH values, which can be attributed to the higher organic matter content in the wastewater. The peppers' titralable acidity (TA) values ranged from 1.13% to 2.26%. The highest TA value was observed in the varieties irrigated with tap water. Among the pepper varieties, the Yalova Yaglik variety irrigated with tap water had the highest value, while the Amfora variety irrigated with treated wastewater had the lowest value. The research found that total phenol values of pepper varieties were high when irrigated with both raw and treated waters. A decrease in irrigation water treatment levels increased total phenol content. Another study investigated the impact of wastewater applications on yield quality parameters in pepper and eggplant varieties and found that an increase in wastewater treatment levels led to a decrease in total phenol content [37]. The level of phenolic compounds in plants and fruits is directly proportional to pollution and related stress. \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Wastewater Application** & **Total Phenolic Matter (mg kg\({}^{-1}\))** & **Water Soluble Dry Matter (\%)** & **pH** & **Titralable Acidity (\%)** \\ \hline \hline \multicolumn{5}{c}{**AMFORA**} \\ \hline
**MW** & 149.26 \(\pm\) 7.63 c & 8.00 \(\pm\) 0.05 c & 5.06 \(\pm\) 0.01 c & 1.37 \(\pm\) 0.03 a \\ \hline
**WW2** & 230.31 \(\pm\) 11.45 b & 8.50 \(\pm\) 0.09 b & 5.20 \(\pm\) 0.03 b & 1.13 \(\pm\) 0.03 b \\ \hline
**WW1** & 303.49 \(\pm\) 4.81 a & 9.37 \(\pm\) 0.10 a & 5.36 \(\pm\) 0.04 a & 1.20 \(\pm\) 0.04 b \\ \hline \multicolumn{5}{c}{**YALOVA YAGLIK**} \\ \hline
**MW** & 186.45 \(\pm\) 4.29 c & 8.37 \(\pm\) 0.12 b & 5.03 \(\pm\) 0.02 b & 2.26 \(\pm\) 0.03 a \\ \hline
**WW2** & 249.10 \(\pm\) 7.77 b & 8.87 \(\pm\) 0.03 ab & 5.12 \(\pm\) 0.01 b & 1.39 \(\pm\) 0.07 b \\ \hline
**WW1** & 319.31 \(\pm\) 8.05 a & 9.03 \(\pm\)0.18 a & 5.37 \(\pm\) 0.05 a & 1.30 \(\pm\) 0.01 b \\ \hline \hline \end{tabular} Data are means \(\pm\) standard error, n = 3. Different letters in each column indicate that they are statistically different (\(p\leq\) 0.05, LSD test). The non-letters are not statistically significant (\(p\) > 0.05; LSD test). MW, Municipal water; WW1, Physical treatments; WW2, Physical + biological treatment.  
\end{table} 
Table 5: Effect of wastewater applications on chemical properties. Wastewaters contain higher levels of heavy metals than tap water, leading to the accumulation of toxic heavy metals in the soil [57]. This accumulation affects the environment and human health and disrupts plant growth [58].