A Rainwater Harvesting and Treatment System for Domestic Use and Human Consumption in Native Communities in Amazonas (NW Peru): Technical and Economic Validation
Table 4
Rainwater quality (mean ± standard deviation) based on monthly evaluation during three months of the rainy season (December 2019 and January and February 2020).
Systems samples (inlet/outlet)
pH (units)
Turbidity (NTU)
TDS (mg/L)
TSS (mg/L)
Alkalinity (mg/L; CaCO3)
Hardness (mg/L; CaCO3)
Nitrate (mg/L; NO3)
Nitrite (mg/L; NO3)
Aluminium (mg/L)
Copper mg/L
Zinc mg/L
FPK-S2 (inlet)
6.77 ± 0.08
0.87 ± 0.76
22.20 ± 32.31
43.91 ± 58.10
36.57 ± 24.13
12.81 ± 1.43
1.01 ± 1.12
0.27 ± 0.46
0.07 ± 0.12
0.03 ± 0.04
1.70 ± 2.45
FPK-S2 (outlet)
6.84 ± 0.16
0.53 ± 0.55
12.56 ± 16.41
52.83 ± 68.14
11.13 ± 0.68
13.09 ± 2.76
0.27 ± 0.46
0.17 ± 0.29
0.07 ± 0.11
0.01 ± 0.01
0.65 ± 0.69
FJT-S1 (inlet)
6.80 ± 0.16
1.27 ± 1.78
6.47 ± 4.10
28.83 ± 22.23
14.71 ± 5.89
14.05 ± 4.69
2.25 ± 2.73
0.13 ± 0.23
0.07 ± 0.12
0.02 ± 0.03
2.09 ± 1.99
FJT-S1 (outlet)
6.78 ± 0.15
0.70 ± 0.75
4.20 ± 0.96
17.70 ± 20.36
14.71 ± 5.89
11.16 ± 1.24
3.31 ± 5.73
0
0.08 ± 0.12
0.07 ± 0.01
0.48 ± 0.78
FT-S4 (inlet)
6.63 ± 0.24
0.80 ± 0.72
4.87 ± 1.01
26.60 ± 24.00
22.27 ± 1.36
11.99 ± 1.89
1.75 ± 1.59
0.03 ± 0.06
0.12 ± 0.14
0.01 ± 00
0.84 ± 0.74
FT-S4 (outlet)
6.77 ± 0.16
3.33 ± 4.69
4.40 ± 1.26
21.33 ± 10.07
18.69 ± 6.98
12.81 ± 1.43
0.77 ± 0.75
0
0.07 ± 0.13
0.01 ± 0.01
0.75 ± 0.66
FI-S3 (inlet)
7.09 ± 0.68
0.76 ± 0.80
9.30 ± 5.72
27.67 ± 20.03
18.69 ± 6.98
14.47 ± 5.8
3.60 ± 4.71
0.00 ± 0.01
0.08 ± 0.13
0.01 ± 0.01
2.18 ± 2.55
FI-S3 (outlet)
6.97 ± 0.27
0.65 ± 0.71
4.70 ± 1.73
22.85 ± 18.78
14.71 ± 5.89
10.75 ± 4.35
1.00 ± 0.94
0.00 ± 0.01
0.11 ± 0.20
0.01 ± 0.01
1.03 ± 0.89
D.S. N° 031-2010-SA
6.5–8.5
5 NTU
1,000 mg/L
nc
nc
500 mg CaCO3/L
5,000 mg NO3/L
3,00 mg NO2/L short exposure
0.2 mg Al/L
2 mg Cu/L
3.0 mg Zn/L
Noncompliant; nc = not contemplated in the Peruvian standard.
