What emerges from the above is a pattern of neglect of the needs of the most vulnerable and marginalized groups in society across planning, institutional responsibilities and resource allocation. Disadvantaged groups can often be identified along ethnic, geographic, and socioeconomic divides (see, for example, A/HRC/18/33/Add.4, para. 79). Indigenous peoples, Dalits and Roma are among such groups facing discrimination with whom the Special Rapporteur has met during the course of her mandate. Moreover, there are vast gender inequalities - in many poor communities, the task of collecting water overwhelmingly falls to women and girls (see, for example, A/HRC/15/31/Add.3 and Corr.1, para. 22). Persons with disabilities are also disproportionately represented among those lacking access to water and sanitation (A/HRC/15/55, para. 21). Neglect can occur for a variety of reasons: groups and individuals may experience stigmatization, they may live in remote areas making serving them costly, or politicians may be indifferent to their needs.