OocystsWaterCryptosporidium parvumCryptosporidiumCryptosporidiosisCoccidiaWater SupplyEimeriaCoccidiosisFresh WaterGiardiaWater PurificationIsosporaWater PollutionFecesBody WaterParasite Egg CountParasitologyCyclosporaEucoccidiidaFiltrationWater Pollutants, ChemicalWater PollutantsDNA, ProtozoanDisinfectionEimeriidaeRiversCyclosporiasisSewageGiardiasisEimeria tenellaPotassium DichromateWater DeprivationToxoplasmaSporozoitesImmunomagnetic SeparationSpores, ProtozoanChlorine CompoundsAnophelesFluorescent Antibody Technique, DirectRNA, Ribosomal, 18SWater MovementsCattle DiseasesIsosporiasisCattleSoilWater SofteningDrinkingMineral WatersApicomplexaAntibodies, ProtozoanToxoplasmosis, AnimalBenzophenoneidumUnited States Environmental Protection AgencyChlorinePolymerase Chain ReactionDiarrheaPlasmodium bergheiSeawaterPropidiumUnionidaeStaining and LabelingAntigens, ProtozoanGiardia lambliaWater MicrobiologyLife Cycle StagesCoccidiostatsYukon Territory