| # | Flag | Country | People using at least basic drinking water services (% of population)People using at least basic drinking water services (% of population) | Year |
|---|---|---|---|---|
| 1 | United Kingdom | 100% | 2015 | |
| 2 | Romania | 100% | 2015 | |
| 3 | Qatar | 100% | 2015 | |
| 4 | French Polynesia | 100% | 2015 | |
| 5 | New Zealand | 100% | 2015 | |
| 6 | Nauru | 100% | 2015 | |
| 7 | Norway | 100% | 2015 | |
| 8 | Netherlands | 100% | 2015 | |
| 9 | Malta | 100% | 2015 | |
| 10 | Macao | 100% | 2015 | |
| 11 | Monaco | 100% | 2015 | |
| 12 | Switzerland | 100% | 2015 | |
| 13 | Chile | 100% | 2015 | |
| 14 | Liechtenstein | 100% | 2015 | |
| 15 | Kuwait | 100% | 2015 | |
| 16 | Italy | 100% | 2015 | |
| 17 | Cyprus | 100% | 2015 | |
| 18 | Germany | 100% | 2015 | |
| 19 | Iceland | 100% | 2015 | |
| 20 | Denmark | 100% | 2015 | |
| 21 | Israel | 100% | 2015 | |
| 22 | Hong Kong | 100% | 2015 | |
| 23 | Greece | 100% | 2015 | |
| 24 | Greenland | 100% | 2015 | |
| 25 | Finland | 100% | 2015 | |
| 26 | France | 100% | 2015 | |
| 27 | Faroe Islands | 100% | 2015 | |
| 28 | Austria | 100% | 2015 | |
| 29 | Andorra | 100% | 2015 | |
| 30 | San Marino | 100% | 2015 | |
| 31 | Singapore | 100% | 2015 | |
| 32 | Belgium | 100% | 2015 | |
| 33 | Sweden | 100% | 2015 | |
| 34 | Bahrain | 100% | 2015 | |
| 35 | Virgin Islands (US) | 100% | 2015 | |
| 36 | Saudi Arabia | 99.99% | 2015 | |
| 37 | Hungary | 99.97% | 2015 | |
| 38 | Australia | 99.97% | 2015 | |
| 39 | Luxembourg | 99.95% | 2015 | |
| 40 | Spain | 99.94% | 2015 | |
| 41 | Tonga | 99.91% | 2015 | |
| 42 | Portugal | 99.9% | 2015 | |
| 43 | Bermuda | 99.9% | 2015 | |
| 44 | Czech Republic | 99.88% | 2015 | |
| 45 | Mauritius | 99.87% | 2015 | |
| 46 | Virgin Islands (British) | 99.86% | 2015 | |
| 47 | Costa Rica | 99.7% | 2015 | |
| 48 | Guam | 99.7% | 2015 | |
| 49 | United Arab Emirates | 99.63% | 2015 | |
| 50 | Argentina | 99.63% | 2015 | |
| 51 | North Korea | 99.62% | 2015 | |
| 52 | Gibraltar | 99.62% | 2015 | |
| 53 | Estonia | 99.61% | 2015 | |
| 54 | South Korea | 99.59% | 2015 | |
| 55 | Croatia | 99.59% | 2015 | |
| 56 | Palau | 99.58% | 2015 | |
| 57 | Slovenia | 99.52% | 2015 | |
| 58 | Brunei | 99.51% | 2015 | |
| 59 | Curacao | 99.37% | 2015 | |
| 60 | Tuvalu | 99.26% | 2015 | |
| 61 | Bulgaria | 99.26% | 2015 | |
| 62 | Northern Mariana Islands | 99.26% | 2015 | |
| 63 | Uruguay | 99.25% | 2015 | |
| 64 | American Samoa | 99.23% | 2015 | |
| 65 | United States | 99.2% | 2015 | |
| 66 | New Caledonia | 98.98% | 2015 | |
| 67 | Saint Kitts And Nevis | 98.97% | 2013 | |
| 68 | Japan | 98.95% | 2015 | |
| 69 | Armenia | 98.92% | 2015 | |
| 70 | Republic of Ireland | 98.92% | 2015 | |
| 71 | Canada | 98.9% | 2015 | |
| 72 | Turkey | 98.9% | 2015 | |
| 73 | Paraguay | 98.89% | 2015 | |
| 74 | Latvia | 98.6% | 2015 | |
| 75 | Jordan | 98.57% | 2015 | |
| 76 | Egypt | 98.36% | 2015 | |
| 77 | Mexico | 98.31% | 2015 | |
| 78 | Thailand | 98.23% | 2015 | |
| 79 | Saint Lucia | 98.16% | 2015 | |
| 80 | Barbados | 98.13% | 2015 | |
| 81 | Belarus | 98.01% | 2015 | |
| 82 | Slovakia | 97.93% | 2015 | |
| 83 | Poland | 97.89% | 2015 | |
| 84 | Maldives | 97.88% | 2015 | |
| 85 | Aruba | 97.87% | 2015 | |
| 86 | The Bahamas | 97.79% | 2015 | |
| 87 | Ukraine | 97.73% | 2015 | |
| 88 | Bosnia and Herzegovina | 97.66% | 2015 | |
| 89 | Montenegro | 97.63% | 2015 | |
| 90 | Bhutan | 97.56% | 2015 | |
| 91 | Brazil | 97.5% | 2015 | |
| 92 | Venezuela | 97.42% | 2015 | |
| 93 | Lithuania | 97.38% | 2015 | |
| 94 | Bangladesh | 97.33% | 2015 | |
| 95 | Belize | 97.13% | 2015 | |
| 96 | Puerto Rico | 97.12% | 2015 | |
| 97 | Trinidad and Tobago | 96.94% | 2015 | |
| 98 | Republic of Macedonia | 96.77% | 2015 | |
| 99 | Libya | 96.75% | 2015 | |
| 100 | Syria | 96.74% | 2015 | |
| 101 | Antigua and Barbuda | 96.74% | 2015 | |
| 102 | Colombia | 96.52% | 2015 | |
| 103 | Dominica | 96.5% | 2015 | |
| 104 | Malaysia | 96.43% | 2015 | |
| 105 | Russia | 96.38% | 2015 | |
| 106 | Isle Of Man | 96.26% | 2015 | |
| 107 | Seychelles | 96.25% | 2015 | |
| 108 | Cayman Islands | 96.13% | 2015 | |
| 109 | China | 95.82% | 2015 | |
| 110 | Grenada | 95.63% | 2015 | |
| 111 | Samoa | 95.51% | 2015 | |
| 112 | Sint Maarten | 95.5% | 2015 | |
| 113 | Cuba | 95.18% | 2015 | |
| 114 | Saint Vincent and the Grenadines | 95.15% | 2015 | |
| 115 | Guyana | 95.07% | 2015 | |
| 116 | Panama | 95% | 2015 | |
| 117 | Iran | 94.87% | 2015 | |
| 118 | Suriname | 94.68% | 2015 | |
| 119 | Dominican Republic | 94.48% | 2015 | |
| 120 | Turkmenistan | 94.45% | 2015 | |
| 121 | Turks And Caicos Islands | 94.32% | 2015 | |
| 122 | Tunisia | 94.23% | 2015 | |
| 123 | Fiji | 93.71% | 2015 | |
| 124 | Guatemala | 93.6% | 2015 | |
| 125 | Algeria | 93.47% | 2015 | |
| 126 | Georgia | 93.26% | 2015 | |
| 127 | El Salvador | 93.01% | 2015 | |
| 128 | Jamaica | 92.92% | 2015 | |
| 129 | Bolivia | 92.88% | 2015 | |
| 130 | Ecuador | 92.61% | 2015 | |
| 131 | Sri Lanka | 92.31% | 2015 | |
| 132 | Lebanon | 92.26% | 2015 | |
| 133 | Honduras | 92.18% | 2015 | |
| 134 | Uzbekistan | 91.46% | 2012 | |
| 135 | Albania | 91.39% | 2015 | |
| 136 | Vietnam | 91.19% | 2015 | |
| 137 | Serbia | 91.18% | 2015 | |
| 138 | Kazakhstan | 91.15% | 2015 | |
| 139 | Oman | 90.94% | 2015 | |
| 140 | Vanuatu | 90.5% | 2015 | |
| 141 | Philippines | 90.5% | 2015 | |
| 142 | Peru | 89.87% | 2015 | |
| 143 | Indonesia | 89.52% | 2015 | |
| 144 | Pakistan | 88.55% | 2015 | |
| 145 | Federated States of Micronesia | 88.35% | 2015 | |
| 146 | Nepal | 87.75% | 2015 | |
| 147 | India | 87.56% | 2015 | |
| 148 | Gabon | 87.54% | 2015 | |
| 149 | Kyrgyzstan | 87.27% | 2015 | |
| 150 | Moldova | 86.69% | 2015 | |
| 151 | Cape Verde | 86.46% | 2015 | |
| 152 | Iraq | 86.1% | 2015 | |
| 153 | South Africa | 84.7% | 2015 | |
| 154 | Azerbaijan | 84.38% | 2015 | |
| 155 | Comoros | 83.7% | 2015 | |
| 156 | Mongolia | 83.22% | 2015 | |
| 157 | Morocco | 82.97% | 2015 | |
| 158 | Nicaragua | 82.26% | 2015 | |
| 159 | Laos | 80.45% | 2015 | |
| 160 | Gambia | 80.06% | 2015 | |
| 161 | São Tomé and Príncipe | 79.7% | 2015 | |
| 162 | Botswana | 79.17% | 2015 | |
| 163 | Namibia | 78.79% | 2015 | |
| 164 | Marshall Islands | 78.16% | 2015 | |
| 165 | Ghana | 77.8% | 2015 | |
| 166 | Djibouti | 76.92% | 2015 | |
| 167 | Senegal | 75.19% | 2015 | |
| 168 | Cambodia | 74.97% | 2015 | |
| 169 | Mali | 74.27% | 2015 | |
| 170 | Tajikistan | 74.14% | 2015 | |
| 171 | Ivory Coast | 73.06% | 2015 | |
| 172 | Lesotho | 71.59% | 2015 | |
| 173 | Yemen | 70.36% | 2015 | |
| 174 | East Timor | 70.22% | 2015 | |
| 175 | Liberia | 69.9% | 2015 | |
| 176 | Mauritania | 69.61% | 2015 | |
| 177 | Guinea-Bissau | 69.2% | 2015 | |
| 178 | Republic of the Congo | 68.34% | 2015 | |
| 179 | Swaziland | 67.63% | 2015 | |
| 180 | Myanmar | 67.54% | 2015 | |
| 181 | Guinea | 67.37% | 2015 | |
| 182 | Nigeria | 67.34% | 2015 | |
| 183 | Malawi | 67.2% | 2015 | |
| 184 | Benin | 67.02% | 2015 | |
| 185 | Zimbabwe | 66.56% | 2015 | |
| 186 | Cameroon | 65.28% | 2015 | |
| 187 | Kiribati | 64.39% | 2015 | |
| 188 | Haiti | 64.17% | 2015 | |
| 189 | Solomon Islands | 64.03% | 2015 | |
| 190 | Afghanistan | 62.98% | 2015 | |
| 191 | Togo | 62.82% | 2015 | |
| 192 | Zambia | 61.23% | 2015 | |
| 193 | Sudan | 58.93% | 2015 | |
| 194 | Kenya | 58.46% | 2015 | |
| 195 | Sierra Leone | 58.09% | 2015 | |
| 196 | Rwanda | 56.71% | 2015 | |
| 197 | Burundi | 55.93% | 2015 | |
| 198 | Central African Republic | 54.14% | 2015 | |
| 199 | Burkina Faso | 53.86% | 2015 | |
| 200 | Madagascar | 50.62% | 2015 | |
| 201 | South Sudan | 50.41% | 2015 | |
| 202 | Tanzania | 50.15% | 2015 | |
| 203 | Equatorial Guinea | 49.59% | 2015 | |
| 204 | Mozambique | 47.26% | 2015 | |
| 205 | Niger | 45.84% | 2015 | |
| 206 | Chad | 42.54% | 2015 | |
| 207 | Democratic Republic Of Congo | 41.84% | 2015 | |
| 208 | Angola | 41.01% | 2015 | |
| 209 | Somalia | 40% | 2015 | |
| 210 | Ethiopia | 39.12% | 2015 | |
| 211 | Uganda | 38.92% | 2015 | |
| 212 | Papua New Guinea | 36.6% | 2015 | |
| 213 | Eritrea | 19.29% | 2015 |