Multiple barriers are needed to protect our water supplies from Cryptosporidium. Treatment methods alone cannot solve the problem; watershed protection and monitoring of water quality are critical.
Physical removal of particles, including oocysts, from water by filtration is an important step in the municipal water treatment process. Typically, water pumped from rivers or lakes into a treatment plant is mixed with coagulants that help settle out particles suspended in the water. If sand filtration is used, even more particles are removed. Finally, the clarified water is disinfected and piped to customers. Filtration is the only conventional method now used in the United States for controlling Cryptosporidium .
Ozone is a strong disinfectant that kills protozoa if sufficient doses and contact times are used, but ozone leaves no residual for killing microorganisms in the distribution system, as does chlorine. The high costs of new filtration or ozone treatment plants are weighed against the benefits of additional treatment. Even well-operated water treatment plants cannot ensure that drinking water will be completely free of Cryptosporidium oocysts.
- They are fecal, oral intestinal parasites of many warm-blooded animals.
- There are several species of each, and some can infect humans.
- Cryptosporidium has a more complex reproductive cycle, although both can survive in water or food environments, and they reproduce and become infectious in the host’s intestines…
- Water filration is used to get rid of parasites