{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T19:55:26Z","timestamp":1791230126476,"version":"4.1.0"},"reference-count":23,"publisher":"IWA Publishing","issue":"1","content-domain":{"domain":["iwaponline.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2018,2,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>In microbiological water quality testing, sample dechlorination with sodium thiosulfate is recommended to ensure that results accurately reflect the water quality at sample collection. Nevertheless, monitoring institutions in low-resource settings do not always dechlorinate samples, and there is limited research describing how this practice impacts drinking water quality results. The effect of dechlorination on indicator bacteria counts was evaluated by spiking laboratory water with five Escherichia coli (E. coli) concentrations (104\u2013108 CFU\/100 mL), chlorinating at six doses (0\u20130.6 mg\/L), holding samples with and without sodium thiosulfate for 5\u20137 hours, and enumerating E. coli by membrane filtration with m-lauryl sulfate media. Additionally, sub-Saharan African water suppliers enumerated thermotolerant coliform by membrane filtration in paired chlorinated water samples collected with and without sodium thiosulfate. Across all E. coli and chlorine doses in the laboratory, and all field tests, samples held without sodium thiosulfate had lower bacteria counts (p &amp;lt; 0.001). Additionally, chlorinated water supply samples held without sodium thiosulfate had an 87.5% false negative rate. Results indicate the importance of dechlorinating microbiological water quality samples, discarding data from chlorinated samples collected without dechlorination, and reinforcing dechlorination recommendations in resource-limited environments to improve water safety management.<\/jats:p>","DOI":"10.2166\/wh.2017.077","type":"journal-article","created":{"date-parts":[[2017,12,5]],"date-time":"2017-12-05T01:10:27Z","timestamp":1512436227000},"page":"70-77","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":15,"title":["The effect of sodium thiosulfate dechlorination on fecal indicator bacteria enumeration: laboratory and field data"],"prefix":"10.2166","volume":"16","author":[{"given":"Anna L.","family":"Murray","sequence":"first","affiliation":[{"name":"Department of Civil and Environmental Engineering, Tufts University, 200 College Avenue, Medford, MA 02155, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emily","family":"Kumpel","sequence":"first","affiliation":[{"name":"The Aquaya Institute, Riara Corporate Suites, Suite #203, Riara Road, Kilimani Estate, Nairobi, Kenya"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rachel","family":"Peletz","sequence":"first","affiliation":[{"name":"The Aquaya Institute, Riara Corporate Suites, Suite #203, Riara Road, Kilimani Estate, Nairobi, Kenya"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ranjiv S.","family":"Khush","sequence":"first","affiliation":[{"name":"The Aquaya Institute, 12 E Sir Francis Drake Blvd Suite E, Larkspur, CA 94939, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniele S.","family":"Lantagne","sequence":"first","affiliation":[{"name":"Department of Civil and Environmental Engineering, Tufts University, 200 College Avenue, Medford, MA 02155, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"945","published-online":{"date-parts":[[2017,12,4]]},"reference":[{"key":"2020032615434625400_JWH-D-17-00077C1","volume-title":"Standard Methods for the Examination of Water and Wastewater","author":"APHA AWWA WEF","year":"2017","edition":"23rd edn"},{"key":"2020032615434625400_JWH-D-17-00077C2","volume-title":"Microbiological Indicator Testing in Developing Countries: A Fact Sheet for the Field Practitioner","author":"CDC","year":"2010"},{"key":"2020032615434625400_JWH-D-17-00077C3","doi-asserted-by":"crossref","first-page":"180","DOI":"10.1111\/j.1365-2672.1957.tb00090.x","article-title":"The effect of thiosulphate and of phosphate on the bactericidal action of copper and zinc in samples of water","volume":"20","year":"1957","journal-title":"J. Appl. Bacteriol."},{"key":"2020032615434625400_JWH-D-17-00077C4","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1111\/j.1699-0463.1999.tb01544.x","article-title":"Isolation of mycobacteria from indoor swimming pools in Finland","volume":"107","year":"1999","journal-title":"APMIS"},{"issue":"12","key":"2020032615434625400_JWH-D-17-00077C5","doi-asserted-by":"crossref","first-page":"1857","DOI":"10.1093\/ps\/79.12.1857","article-title":"Validation of thiosulfate for neutralization of acidified sodium chlorite in microbiological testing","volume":"79","year":"2000","journal-title":"Poult. Sci."},{"issue":"11","key":"2020032615434625400_JWH-D-17-00077C6","doi-asserted-by":"crossref","first-page":"74","DOI":"10.1002\/j.1551-8833.1990.tb07054.x","article-title":"Coliform regrowth in drinking water: a review","volume":"82","year":"1990","journal-title":"J. Am. Water Works Assoc."},{"key":"2020032615434625400_JWH-D-17-00077C7","volume-title":"The Bacteriological Examination of Water Supplies. Reports on Public Health and Medical Subjects","author":"Ministry of Health","year":"1939"},{"issue":"1","key":"2020032615434625400_JWH-D-17-00077C8","doi-asserted-by":"crossref","first-page":"79","DOI":"10.2166\/wh.2014.195","article-title":"Accuracy, precision, usability, and cost of free chlorine residual testing methods","volume":"13","year":"2015","journal-title":"J. Water Health"},{"key":"2020032615434625400_JWH-D-17-00077C9","doi-asserted-by":"crossref","first-page":"249","DOI":"10.1128\/JB.70.2.249-250.1955","article-title":"Influence of sodium thiosulfate on the survival of coliform organisms in stored samples of untreated lake water","volume":"70","year":"1955","journal-title":"J. Bacteriol."},{"issue":"3","key":"2020032615434625400_JWH-D-17-00077C10","doi-asserted-by":"crossref","first-page":"275","DOI":"10.3390\/ijerph13030275","article-title":"To what extent is drinking water tested in sub-Saharan Africa? A comparative analysis of regulated water quality monitoring","volume":"13","year":"2016","journal-title":"Int. J. Environ. Res. Public Health"},{"issue":"2","key":"2020032615434625400_JWH-D-17-00077C11","doi-asserted-by":"crossref","first-page":"99","DOI":"10.1080\/08927019909378402","article-title":"Potable water and biofilms: a review of the public health implications","volume":"14","year":"1999","journal-title":"Biofouling"},{"issue":"4","key":"2020032615434625400_JWH-D-17-00077C12","doi-asserted-by":"crossref","first-page":"242","DOI":"10.2166\/washdev.2011.002","article-title":"A comparative assessment of institutional frameworks for managing drinking water quality","volume":"1","year":"2011","journal-title":"J. Water Sanit. Hyg. Dev."},{"issue":"3","key":"2020032615434625400_JWH-D-17-00077C13","doi-asserted-by":"crossref","first-page":"461","DOI":"10.3201\/eid0503.990322","article-title":"Chlorine inactivation of Escherichia coli O157: H7","volume":"5","year":"1999","journal-title":"Emerg. Infect. Dis."},{"issue":"2","key":"2020032615434625400_JWH-D-17-00077C14","doi-asserted-by":"crossref","first-page":"43","DOI":"10.2166\/ws.2002.0044","article-title":"Drinking water quality assessment practices: an international perspective","volume":"2","year":"2002","journal-title":"Water Supply"},{"issue":"4","key":"2020032615434625400_JWH-D-17-00077C15","first-page":"572","article-title":"Effect of sodium thiosulphate on the coliform and Bacterium coli counts of non-chlorinated water samples","volume":"51","author":"The Public Health Laboratory Service Water Sub-committee","year":"1953","journal-title":"J. Hyg."},{"key":"2020032615434625400_JWH-D-17-00077C16","volume-title":"Health Risks from Microbial Growth and Biofilms in Drinking Water Distribution Systems Report of Water Office, United State Environmental","author":"USEPA","year":"2002"},{"key":"2020032615434625400_JWH-D-17-00077C17","volume-title":"National Primary Drinking Water Regulations","author":"USEPA","year":"2009"},{"key":"2020032615434625400_JWH-D-17-00077C18","volume-title":"Potable Water Supply Sampling","author":"USEPA","year":"2013"},{"key":"2020032615434625400_JWH-D-17-00077C19","volume-title":"Guidelines for Drinking-Water Quality","author":"WHO","year":"1997","edition":"2nd edn"},{"key":"2020032615434625400_JWH-D-17-00077C20","volume-title":"Guidelines for Drinking-Water Quality","author":"WHO","year":"2011","edition":"4th edn"},{"key":"2020032615434625400_JWH-D-17-00077C21","volume-title":"Assessing Microbial Safety of Drinking Water: Improving Approaches and Methods","author":"WHO\/OECD","year":"2003"},{"key":"2020032615434625400_JWH-D-17-00077C22","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1078\/1438-4639-00101","article-title":"A case report of false negative Legionella test results in a chlorinated public hot water distribution system due to the lack of sodium thiosulfate in sampling bottles","volume":"204","year":"2001","journal-title":"Int. J. Hyg. Environ. Health"},{"issue":"10","key":"2020032615434625400_JWH-D-17-00077C23","doi-asserted-by":"crossref","first-page":"1607","DOI":"10.4315\/0362-028X-64.10.1607","article-title":"Chlorine inactivation of Escherichia coli O157: H7 in water","volume":"64","year":"2001","journal-title":"J. Food Protect."}],"container-title":["Journal of Water and Health"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/iwaponline.com\/jwh\/article-pdf\/16\/1\/70\/239984\/jwh0160070.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"http:\/\/iwaponline.com\/jwh\/article-pdf\/16\/1\/70\/239984\/jwh0160070.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,3,26]],"date-time":"2020-03-26T22:21:24Z","timestamp":1585261284000},"score":1,"resource":{"primary":{"URL":"https:\/\/iwaponline.com\/jwh\/article\/16\/1\/70\/37981\/The-effect-of-sodium-thiosulfate-dechlorination-on"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,12,4]]},"references-count":23,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2017,12,4]]},"published-print":{"date-parts":[[2018,2,1]]}},"URL":"https:\/\/doi.org\/10.2166\/wh.2017.077","relation":{},"ISSN":["1477-8920","1996-7829"],"issn-type":[{"value":"1477-8920","type":"print"},{"value":"1996-7829","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,12,4]]}}}