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Small-scale Sanitation: Dutch experiences at home and abroad Carel de Villeneuve Ministry of Transport, Public Works and Water Management The Netherlands.

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Presentation on theme: "Small-scale Sanitation: Dutch experiences at home and abroad Carel de Villeneuve Ministry of Transport, Public Works and Water Management The Netherlands."— Presentation transcript:

1 Small-scale Sanitation: Dutch experiences at home and abroad Carel de Villeneuve Ministry of Transport, Public Works and Water Management The Netherlands

2 Contents History of pollution control Small scale sanitation at home Small-scale sanitation abroad: the AKVO initiative

3 History

4 Surface Water Pollution Act Discharge into surface water without a licence is forbidden –Precautionary principle: pollution should be minimized, irrespectively of the type of substances concerned –No-deterioration principle: harmful substances should not increase in the environment Every polluter pays for: –Operation sewage treatment plants –Costs of restoration of the water system –Costs of administration Principles:

5 Small scale sanitation Statutory framework Municipalities must collect and remove waste water If not cost-effective, Provincial Executive may release them from this obligation

6 Connection to sewer or individual treatment of waste water type of dischargedistance to sewerrule households ( 10 p.e.) 40 mmunicipal sewer households (p.e) > m 600 m 1500 m 3000 m no limit municipal sewer households ( 10 p.e.) > 40 mlicence for discharge firm or farmno limitlicence for discharge

7 Individual waste water treatment facility Type of treatment system –Discharge on soil or surface water –Classification (depending on sensitiveness of surroundings and type/scale of settlement) –Septic tank, compact systems (biorotor, submerged bed, activated sludge system), sand infiltration systems or constructed wetlands Certification (construction, supervision of construction, design and functioning) Maintenance and supervision


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