{"id":951,"date":"2018-06-14T00:50:06","date_gmt":"2018-06-14T00:50:06","guid":{"rendered":"https:\/\/www.ampac1.com\/blog\/understanding-human-infectious-cryptosporidium-risk-in-drinking-water-supply-catchments\/"},"modified":"2026-05-03T20:22:10","modified_gmt":"2026-05-04T03:22:10","slug":"understanding-human-infectious-cryptosporidium-risk-in-drinking-water-supply-catchments","status":"publish","type":"post","link":"https:\/\/www.ampac1.com\/blog\/understanding-human-infectious-cryptosporidium-risk-in-drinking-water-supply-catchments\/","title":{"rendered":"Understanding human infectious Cryptosporidium risk in drinking water supply catchments"},"content":{"rendered":"

Quick Answer:<\/strong> Understanding Cryptosporidium risk in drinking water catchments requires modeling the complex interplay of source water oocyst loading, watershed land use, climate variability, and treatment system performance. Research in the United Kingdom and United States has developed catchment-scale models pre. Advanced water treatment technologies including reverse osmosis provide effective solutions for water quality challenges in this area. AMPAC USA’s commercial and industrial systems are engineered to address these specific water treatment needs with certified, documented performance.<\/p>\n

Swaffer, B.; Abbott, H.; King, B.; Linden, L. van der; Monis, P.<\/span><\/span><\/p>\n

Water Research, 138 282-292;\u00a0<\/span>10.1016\/j.watres.2018.03.063<\/span><\/span><\/span>2018<\/span><\/span><\/p>\n

Abstract<\/h2>\n
\n

Treating drinking water appropriately depends, in part, on the robustness of source water quality risk assessments, however quantifying the proportion of infectious, human pathogenic\u00a0Cryptosporidium<\/em>\u00a0oocysts remains a significant challenge. We analysed 962 source water samples across nine locations to profile the occurrence, rate and timing of infectious, human pathogenic\u00a0Cryptosporidium<\/em>\u00a0in surface waters entering drinking\u00a0water reservoirs\u00a0during rainfall-runoff conditions. At the catchment level, average infectivity over the four-year study period reached 18%; however, most locations averaged <5%. The maximum recorded infectivity fraction within a single rainfall runoff event was 65.4%, and was dominated by\u00a0C.\u00a0parvum<\/em>. Twenty-two\u00a0Cryptosporidium<\/em>\u00a0species and\u00a0genotypes\u00a0were identified using PCR-based molecular techniques; the most common being\u00a0C.\u00a0parvum<\/em>, detected in 23% of water samples. Associations between landuse and livestock stocking characteristics with\u00a0Cryptosporidium<\/em>\u00a0were determined using a linear mixed-effects model. The concentration of\u00a0pathogens\u00a0in water were significantly influenced by flow and dominance of land-use by commercial grazing properties (as opposed to lifestyle properties) in the catchment (p<\/em>?<?0.01). Inclusion of measured infectivity and human pathogenicity data into a quantitative microbial risk assessment (QMRA) could reduce the source water treatment requirements by up to 2.67 log removal values, depending on the catchment, and demonstrated the potential benefit of collating such data for QMRAs.<\/p>\n<\/div>\n

https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0043135418302598?via%3Dihub<\/p>\n

The post Understanding human infectious Cryptosporidium risk in drinking water supply catchments appeared first on Facts About Water.<\/p>\n

Source: Water Feed<\/p>\n","protected":false},"excerpt":{"rendered":"

We analysed 962 source water samples across nine locations to profile the occurrence, rate and timing of infectious, human pathogenic\u00a0Cryptosporidium\u00a0in surface waters entering drinking\u00a0water reservoirs\u00a0during rainfall-runoff conditions<\/p>\n","protected":false},"author":1,"featured_media":87969,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[24],"tags":[22],"class_list":["post-951","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-water-filter","tag-ro"],"_links":{"self":[{"href":"https:\/\/www.ampac1.com\/blog\/wp-json\/wp\/v2\/posts\/951","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ampac1.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ampac1.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ampac1.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ampac1.com\/blog\/wp-json\/wp\/v2\/comments?post=951"}],"version-history":[{"count":4,"href":"https:\/\/www.ampac1.com\/blog\/wp-json\/wp\/v2\/posts\/951\/revisions"}],"predecessor-version":[{"id":88161,"href":"https:\/\/www.ampac1.com\/blog\/wp-json\/wp\/v2\/posts\/951\/revisions\/88161"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ampac1.com\/blog\/wp-json\/wp\/v2\/media\/87969"}],"wp:attachment":[{"href":"https:\/\/www.ampac1.com\/blog\/wp-json\/wp\/v2\/media?parent=951"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ampac1.com\/blog\/wp-json\/wp\/v2\/categories?post=951"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ampac1.com\/blog\/wp-json\/wp\/v2\/tags?post=951"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}