Chemical analyzes of the samples were produced with Philips-PW1480 X-ray fluorescence (XRF).
Moisture analyzes of the samples were determined triplicate (n = 3) by an automatic moisture analyzer (AND MX-50 Moisture Analyzer, Japan).
The amino acid analyzes of the samples were made duplicate (n = 2) in TUBITAK MAM according to Dimova (2003), and Gheshlaghi et al. (2008), using the high-performance liquid chromatography (HPLC) method.
Three coders independently analyzed 20%% of the sample (n = 30 pages) to achieve intercoder reliability.
From the total samples analyzed, most of the samples comply with the water quality guidelines of Ethiopian limit, WHO and U.SEPA.
From the samples analyzed, three of the samples (BSP1, BSP2 and BSP3) were found to be above the permissible limit set by the Ethiopian limit, WHO and U.S EPA.
Chi-square tests were performed to analyze the sociodemographic characteristics of the sample groups.
Energy dispersive spectroscopy (EDS) measurements were also performed to analyze the chemical composition of the sample.
Table 1 represents the demographic characteristics of the sample analyzed.
X-ray fluorescence spectroscopy (Axios) was used to analyze the composition of the samples.
