A. C. L. Queiroz, L. S. de M. Cardoso, S. C. F. da Silva, L. Heller, and S. Cairncross, “Drinking-water Quality Surveillance Programme (Vigiagua): identifying gaps in policy making and program implementation on the municipal level”, Saúde Soc., vol. 21, no. 2, pp. 465–478, Jun. 2012, doi: 10.1590/S0104-12902012000200019.