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Table 9

Physico-chemical properties for samples before and after purification collected from residential treatment device water

ParametersBefore mean ± SD (min–max)After mean ± SD (min–max)p
Conductivity 576.12 ± 73.81 (436.0–880.0) 108.13 ± 144.34 (3.0–583.0) 0.000 
pH 7.47 ± 0.13 (7.14–7.88) 6.54 ± 0.52 (5.57–8.26) 0.000 
Aluminum (Al) 0.29 ± 2.06 (0–14.60) 0.320 
Fluoride (F) 0.19 ± 0.2 (0–0.87) 0.04 ± 0.05 (0–0.16) 0.000 
Chloride (Cl) 11.55 ± 4.95 (4.95–55.67) 2.03 ± 2.58 (0–12.45) 0.000 
Nitrate (NO315.84 ± 5.44 (5.56–32.20) 5.31 ± 6.17 (0–38.93) 0.000 
Nitrite (NO2Not detected Not detected  
Ammonium (NH4<0.04 <0.04  
Calcium (Ca) 86.11 ± 17.04 (49.94–133.90) 13.84 ± 20.62 (0.05–94.20) 0.000 
Magnesium (Mg) 16.98 ± 7.77 (6.58–29.60) 3.22 ± 5.99 (0.03–27.42) 0.000 
ParametersBefore mean ± SD (min–max)After mean ± SD (min–max)p
Conductivity 576.12 ± 73.81 (436.0–880.0) 108.13 ± 144.34 (3.0–583.0) 0.000 
pH 7.47 ± 0.13 (7.14–7.88) 6.54 ± 0.52 (5.57–8.26) 0.000 
Aluminum (Al) 0.29 ± 2.06 (0–14.60) 0.320 
Fluoride (F) 0.19 ± 0.2 (0–0.87) 0.04 ± 0.05 (0–0.16) 0.000 
Chloride (Cl) 11.55 ± 4.95 (4.95–55.67) 2.03 ± 2.58 (0–12.45) 0.000 
Nitrate (NO315.84 ± 5.44 (5.56–32.20) 5.31 ± 6.17 (0–38.93) 0.000 
Nitrite (NO2Not detected Not detected  
Ammonium (NH4<0.04 <0.04  
Calcium (Ca) 86.11 ± 17.04 (49.94–133.90) 13.84 ± 20.62 (0.05–94.20) 0.000 
Magnesium (Mg) 16.98 ± 7.77 (6.58–29.60) 3.22 ± 5.99 (0.03–27.42) 0.000 
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