Table 8.
Summary of field water disinfection techniques.
| Bacteria | Viruses | Giardia/ameba | Cryptosporidium | Nematodes/cercarea | |
|---|---|---|---|---|---|
| Heat | + | + | + | + | + |
| Filtration | + | +/āa | + | + | + |
| Halogens | + | + | + | ā | +/āb |
| UV | + | + | + | + | DNA |
| Chlorine dioxide, ozone, and photocatalytic | + | + | + | + | DNAc |
DNA, data not available.
Most filters make no claims for viruses. Ultrafiltration with hollow-fiber technology and reverse osmosis is effective.
Eggs are not very susceptible to halogens but very low risk of waterborne transmission.
No data available for photocatalytic disinfection.