Type of water sample testing | Bacterial genus/heavy metal | Percent of samples present at filter install | Percent of samples present at follow-up | p value comparing install to follow-upb | p value for linear trendc | p value for seasonal effectd |
---|---|---|---|---|---|---|
Bacteria detected | Acinetobacter | 53.8% (14/26) | 35.3% (6/17) | 0.25 | 0.39 | 0.56 |
Aeromonas | 16.1% (5/31) | 20% (4/20) | 0.72 | 0.51 | 0.64 | |
Burkholderia | 6.45% (2/31) | 5% (1/20) | 0.83 | 0.31 | 0.54 | |
Campylobacter | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Enterobacter | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Escherichia/ Shigella | 45.5% (10/22) | 50% (6/12) | 0.80 | 0.90 | 0.90 | |
Francisella | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Helicobacter | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Klebsiella | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Legionella | 58.1% (18/31) | 70% (14/20) | 0.18 | 0.06 | 0.41 | |
Leptospira | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Mycobacterium | 30% (9/30) | 57.9% (11/19) | 0.06 | 0.19 | 0.08 | |
Pseudomonas | 85.2% (23/27) | 94.4% (17/18) | 0.35 | 0.62 | 0.40 | |
Salmonella | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Staphylococcus | 12.9% (4/31) | 15.8% (3/19) | 0.78 | 0.79 | 0.87 | |
Tsukamurella | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Vibrio | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Yersinia | 3.23% (1/31) | 0% (0/20) | 0.98 | 0.69 | 0.47 | |
Dissolved heavy metal ions detected | Arsenic | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 |
Barium | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Cadmium | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Chromium | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Coppera | 64.7% (22/34) | 68.2% (15/22) | 0.79 | 0.38 | 0.34 | |
Leada | 8.82% (3/34) | 4.55% (1/22) | 0.55 | 0.38 | 0.63 | |
Nickel | 0% (0/34) | 0% (0/22) | 1.00 | 1.00 | 1.00 | |
Seleniuma | 5.88% (2/34) | 0% (0/22) | 0.96 | 0.16 | 0.21 |