WATER SAFETY PLANS (WSP) AND EXPERIENCESWITH SMALL-SCALE WATER SUPPLY SYSTEMSMargriet SamwelWomen in Europe for a Common Future – WECF, The NetherlandsEmail: margriet.samwel@wecf.eu, Website: www.wecf.euIntroductionThe Stockholm Framework (2001) provides aharmonized approach for the development of health-basedguidelines and standards in terms of water and sanitationrelated hazards. Coinciding with the development of thisframework was the realization that drinking water safetycould no longer be guaranteed solely through monitoringat the so-called ‘end of pipe’ and the increased need toaugment traditional sources of water supply (potable andnon-potable) with re-used water. Both of these factorsrequired a more preventative risk-based approach tomanaging water for the protection of public health.Hence the World Health Organisation (WHO) initiatedthe Water Safety Plans (WSP), which is to be consideredas a part of the WHO or other guidelines or directives ondrinking water quality. The WSP asks for an identificationof risks, which could affect water safety and human healthin every stage of the water supply.What is a Water Safety Plan?A Water Safety Plan (WSP) is a most effective way ofensuring that a water supply is safe for human consumptionand that it meets the health based standards and otherregulatory requirements. It is based on a comprehensiverisk assessment and risk management approach to allthe steps in a water supply chain from the catchment tothe consumer.The primary objectives of a water safety plan inprotecting human health and ensuring good water supplypractice are the minimisation of contamination of waterresources, the reduction or removal of contaminationthrough appropriate treatment processes and theprevention of contamination in the distribution networkand the domestic distribution system. These objectivesare applicable to all water supply chains, irrespective oftheir size or complexity.The WSP focuses on the safety of all the differentaspects of a water supply, which can vary from a large-scale supply providing water to several million consumersto a small-scale system, e.g. a bucket-well. The WSP isa concept to develop a process-orientated observation ofthe water supply and its goal is to identify and eliminate allthe possible risks in the entire water supply system: fromthe potential risks of water pollution in the catchment areaall the way along the line to the consumers.The approach of a WSP can be adopted to all waterand sanitation systems, such as surface water, rainwaterharvestingor sanitation facilities.The base of every Safety Plan is the understandingof the system and collection of all relevant informationabout the nature and properties of the water or sanitationsystem and the activities taken place in the target area 1 .Catchment• geology, hydrology, meteorology and weatherpatterns• nature of the land and it use, in particular degreeof urbanisation, industrial activities, animal rearing andarable farming, degree of natural land and its wildlife,quarrying and mining (that is uses and activities that couldgive rise to contamination of raw water sources)• competing water uses such as irrigation and rivercompensation flows• planned future activities• any existing catchment control and protectionzonesSurface water• type of water such as river (direct abstraction), river(abstraction in storage reservoir), impounding reservoir,lakeSource: DWI – A brief guide to drinking water safety plansOctober 2005Fig. 1. The components of a Water Safety Plan (WHO)— 195 —
• inventory of point discharges such as sewageeffluents, industrial effluents, water from mining• water quality and how it varies seasonally and withweather patterns• flow and reliability of source and retention time ifstored• recreational and other human activity• any existing source protection systemsGroundwater• confined or unconfined aquifer, hydrology andrecharge area• flow rate, direction of flow and dilutioncharacteristics• whether fast or slow response to activities andevents on surface• depth of casing and abstraction and any wellheadprotection• inventory of activities in the recharge area that couldaffect water qualityBased on the gathered knowledge hazardidentification and risk assessment with involvement oflaboratories, distribution network (services for watertreatment and pipes or others), health authorities andother stakeholders such as consumers, farmers orindustry is followed whereas all the elements andfindings should be documented and made accessible toall stakeholders and the public.Improvements in order to minimise the risks shouldbe planned and carried out with a broad involvement ofthe public.Detailed information about Water safety plans can befound in the WHO document: Managing drinking-waterquality from catchment to consumer 2 .Experiences with developing Water Safety Plansinvolving schoolsSince several years, WECF, in cooperation with localpartners, has been monitoring water pollution of smallscalewater supply systems such as dug wells in ruralareas of several countries such as Romania, Moldova orUkraine.Poor sanitary conditions and mismanagement ofhuman and agricultural waste cause anthropogenic(man-made) water pollution with nitrates, faecal bacteria.Despite the evidence provided, this has NOT triggeredany action by local or regional authorities to start waterprotection measures. Among the rural citizens andlocal authorities low awareness exists on the relationof anthropogenic pollution, water quality and relateddiseases. In villages with small-scale water supplysystems, financial mechanisms or structures for waterand sanitation are often not available.To address the above-mentioned problems WECFcreated an educational package (WSP toolbox) forschools to develop community based Water Safety Plans(WSP) for local small-scale water supply systems such asdug wells, boreholes and public taps 3 .The aim of the activities on developing WSP forsmall-scale water supply systems involving schoolswas, building local capacity and strengthening and2 http://www.who.int/water_sanitation_health/dwq/wsp0506/en/index.html3 http://www.wecf.eu/english/publications/2008/wspmanuals-revised.phpmobilising the community for improved access to safedrinking water. The WSP toolkit provides schools andother stakeholders with a WSP manual with backgroundinformation about the aims of the WSP, about propertiesof drinking water and sources of pollution and relatedhealth risks. Three different questionnaires wereprepared for the schools: one for citizens, one for thelocal medical staff and one for the authority responsiblefor the local water supply.Based on the sanitary inspection forms of the WHO,checklists for the risk assessment of water sources wereadapted to the local circumstances.Two teachers per participating school were trained byWECF on how to develop with the involvement of theirpupils a WSP for their local community. The schoolswere provided with materials and information for carryingout nitrate quick tests and organo-leptic observations,and were motivated to analyse local water sources andto carry out a longitudinal nitrate monitoring of selecteddrinking water sources.ImplementationIn autumn 2008, school staff of 8 Romanian schoolsdeveloped and started a WSP programme for their pupils.The teachers and the pupils of the participating schoolswere very motivated and enthusiastic about the activities,because the activities were experienced as practical,educative and relevant to the local environment. The resultsdepended considerable on motivation and available timeof the teachers and the pupils. Approximately 500 watersamples were tested for nitrate and other simple testslike pH, observing the turbidity or colour of the samples,were carried out. The pupils, including final conclusionsand recommendations, carried out many interviews andsanitary inspections.Results of interviews with the local water responsibleauthoritiesOne of the results of the interviews was that inone out of the 3 communities with public taps the wellsand the water quality was seldom monitored; for theother 2 communities with public taps regularly waterquality controls were carried out. Citizens have to paylittle money (0.5 Euro/m 3 ) for water delivered by publictaps, water provided by public wells is for free. Therespondents said that the authorities of the communesdo not have additional budget and there are not enoughfinancial means for operation and maintenance of thesystems.Hence water protection measures or maintenance ofthe water sources was very poor in the target villages.Results of interviews with the local health authoritiesThe local doctors of 6 villages answered thequestionnaire. On the question “What is in your opinion themain problem concerning drinking water in the village?“two doctors mentioned the pollution via animal droppings,septic tanks, lack of sewerage and the fact that water isnot tested or protected. In three villages partly served withpartly public taps, the main problem mentioned was partialor a total lack of water supply. Regarding the water quality,the doctors of the four villages mentioned the high nitratesand water infected with Giardia. Most of the intervieweddoctors of the target villages were aware of the lack ofaccess to safe water and related health problems.— 196 —
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Descrierea CIP a Camerei Nationale
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Уважаемые коллеги,
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доме, в котором мы в
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тера и глубины изме
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Таблица 5. Оптималь
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Таблица. Результат
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ФОРМИРОВАНИЕ БИОЦЕ
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Подавляющее больши
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Рис.1. Днестр вблизи
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сопоставимости дан
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ции с международны
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А.Н. Бургеля, К.П. Бу
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Выводы1. Уже на само
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тегории, виды и пор
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санитарно-эпидемио
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реационных, монито
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Шабановой Г.А. и Кух
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могут быть убраны,
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Н. Гроссу * , Р. Шакир
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Calitatea apei r. Nistru conform gr
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Карта геохимическо
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лесу был дуб, сегод
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щих улучшить социа
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ней опасных загряз
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ФотоприложениеФот
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в Украине - одесска
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тия по гидрохимиче
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ветствующих санита
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ЭКОЭТИЧЕСКОЕ ВОСПИ
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always been the public concern of b
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и уникальными по си
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В связи с тем, что К
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efectuat în baza următorilor indi
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видуальных различи
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РЕКРЕАЦИОННЫЕ РЕСУ
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ЭТАПЫ ЭВОЛЮЦИИ БИО
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чимые. При этом «пе
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струкции как от сбр
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Рогоз широколистны
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Основные экскурсио
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2. Кравченко Е.Н. При
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Decision-Maker user group are respo
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может ее запускать,
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поражения населени
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тию РДЮЦ «ГУТТА - кл
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мость разработки н
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Биология. Подорожн
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площадь ассимиляци
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Молдовы и Приднест
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[4]. Несомненно, выжи
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В настоящее время б
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Окончание табл. 2Ок
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содержаниеПРЕДИСЛ
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А.П. Погребняк, В.Ф.
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Научное изданиеБАС