Table 1.

Summary of the decision support systems (DSS) designed for studies of small water supply systems (SSWS).

Leading Organization	Year	Name of The Tool	Main Characteristics	Water Supply Size Range	Application Environment	Outputs
WHO/IWA	2009	Water Safety Plan Manual	Guidance document	2500–8,500,000	Agricultural (extensive) Urban	Risk scoring Control measures
Ireland (EPA)	2010	Handbook on implementation for Water Services Authorities for private water supplies—Section 10	Semi quantitative RA	2–5000	Agricultural Urban pressure	Risk scoring
United Kingdom (Scottish executive)	2003	Private water supplies : Technical Manual	Semi quantitative RA	1–50 50–1000	All pressures (wild life, agriculture, forestry industry, wastewater, sludge, landfill	Risk scoring Recommendations
France (ASTEE)	2009	Ogeris, aide à l’évaluation des risques microbiologiques dans les petites unités de production/distribution d’eau potable	Vulnerability assessment	<5000	All types	Recommendations and priorization of actions
Germany (DVGW)	2008	Technical note for guideline W 1001. DVGW Rules, security of water supply risk management during normal operation	Guidance document			Risk scoring Control measures
USA (EPA)	2007	HACCP Strategies for Distribution System Monitoring, Hazard Assessment and Control	Guidance document	Large supplies (1 example 770,000)	Urban pressure	Risk analysis and recommendations
University of Guelph (Canada)	2009	Fuzzy-Logic Modeling of Risk Assessment	Fuzzy logic and fault tree methodology	Small water supplies	All types	Identification of which failure contributes to the high potential risk Recommendations