| Macro Region |
| Africa | 104 timeseries | |
| Asia | 38 timeseries | |
| Central America and the Caribbean | 24 timeseries | |
| Europe | 80 timeseries | |
| Middle East | 22 timeseries | |
| North America | 99.6 % in 2020 | WB |
| Oceania | 25 timeseries | |
| South America | 24 timeseries | |
| Southeast Asia | 20 timeseries |
| Country (%) |
| Afghanistan | 66.33 in 2020 | WB |
| Albania | 94.09 in 2020 | WB |
| Algeria | 90.04 in 2020 | WB |
| Andorra | 100 in 2020 | WB |
| Angola | 27.81 in 2020 | WB |
| Argentina | 92.98 in 2016 | WB |
| Armenia | 100 in 2020 | WB |
| Australia Drinking water | 1 timeseries | |
| Austria | 100 in 2020 | WB |
| Azerbaijan | 90.93 in 2020 | WB |
| Bangladesh | 97.88 in 2020 | WB |
| Belarus | 98.56 in 2020 | WB |
| Belgium | 100 in 2020 | WB |
| Belize | 98 in 2020 | WB |
| Benin | 58.05 in 2020 | WB |
| Bhutan | 96.73 in 2020 | WB |
| Bolivia | 79.94 in 2020 | WB |
| Bosnia and Herzegovina | 97.33 in 2020 | WB |
| Botswana | 79.04 in 2020 | WB |
| Brazil | 95.95 in 2020 | WB |
| Brunei Darussalam | 99.05 in 2015 | WB |
| Bulgaria | 97.4 in 2020 | WB |
| Burkina Faso | 32.72 in 2020 | WB |
| Burundi | 57.69 in 2020 | WB |
| Cabo Verde | 80.11 in 2020 | WB |
| Cambodia | 65.07 in 2020 | WB |
| Cameroon | 43.53 in 2020 | WB |
| Canada | 99.06 in 2020 | WB |
| Central African Republic | 28.11 in 2020 | WB |
| Chad | 37.58 in 2020 | WB |
| Chile | 100 in 2020 | WB |
| China | 89.66 in 2020 | WB |
| Colombia | 86.77 in 2020 | WB |
| Comoros | 76.91 in 2019 | WB |
| Congo | 45.72 in 2020 | WB |
| Costa Rica | 99.65 in 2020 | WB |
| Côte d'Ivoire | 55.72 in 2020 | WB |
| Croatia | 99.61 in 2017 | WB |
| Cuba | 94.39 in 2020 | WB |
| Cyprus | 99.85 in 2020 | WB |
| Czech Republic | 99.82 in 2020 | WB |
| Democratic People's Republic of Korea | 88.75 in 2020 | WB |
| Democratic Republic of the Congo | 21.98 in 2020 | WB |
| Denmark | 100 in 2020 | WB |
| Djibouti | 47.28 in 2020 | WB |
| Dominican Republic | 90.3 in 2020 | WB |
| Ecuador | 87.05 in 2020 | WB |
| Egypt | 99.33 in 2020 | WB |
| El Salvador | 93.45 in 2020 | WB |
| Equatorial Guinea | 30.78 in 2017 | WB |
| Eritrea | 27.8 in 2016 | WB |
| Estonia | 99.19 in 2017 | WB |
| Eswatini | 62.47 in 2020 | WB |
| Ethiopia | 40.03 in 2020 | WB |
| Fiji | 89.09 in 2020 | WB |
| Finland | 100 in 2020 | WB |
| France | 100 in 2020 | WB |
| Gabon | 44.75 in 2020 | WB |
| Gambia | 69.19 in 2020 | WB |
| Georgia | 94.27 in 2020 | WB |
| Germany | 100 in 2020 | WB |
| Ghana | 71.89 in 2020 | WB |
| Greece | 100 in 2020 | WB |
| Guatemala | 90.12 in 2020 | WB |
| Guinea | 50.75 in 2020 | WB |
| Guinea Bissau | 49.83 in 2020 | WB |
| Guyana | 93.93 in 2020 | WB |
| Haiti | 42.85 in 2020 | WB |
| Honduras | 89.88 in 2020 | WB |
| Hungary | 100 in 2020 | WB |
| Iceland | 100 in 2020 | WB |
| India | 88.78 in 2020 | WB |
| Indonesia | 85.67 in 2020 | WB |
| Iran | 93.83 in 2020 | WB |
| Iraq | 94.83 in 2020 | WB |
| Ireland | 98.13 in 2020 | WB |
| Israel | 100 in 2020 | WB |
| Italy | 99.38 in 2017 | WB |
| Jamaica | 85.4 in 2020 | WB |
| Jordan | 97.31 in 2020 | WB |
| Kazakhstan | 91.94 in 2020 | WB |
| Kenya | 51.78 in 2020 | WB |
| Kiribati | 60.99 in 2020 | WB |
| Kyrgyzstan | 87.26 in 2020 | WB |
| Lao People’s Democratic Republic | 78.47 in 2020 | WB |
| Latvia | 98.58 in 2020 | WB |
| Lesotho | 63.65 in 2020 | WB |
| Liberia | 64.1 in 2020 | WB |
| Lithuania | 93.78 in 2020 | WB |
| Luxembourg | 98.6 in 2020 | WB |
| Madagascar | 36.41 in 2020 | WB |
| Malawi | 66.59 in 2020 | WB |
| Malaysia | 90.2 in 2020 | WB |
| Maldives | 99.92 in 2020 | WB |
| Mali | 72.08 in 2020 | WB |
| Malta | 100 in 2020 | WB |
| Marshall Islands | 94.43 in 2020 | WB |
| Mauritania | 49.91 in 2020 | WB |
| Mauritius | 99.83 in 2020 | WB |
| Mexico | 98.34 in 2020 | WB |
| Micronesia (Federated States of) | 85.98 in 2015 | WB |
| Mongolia | 61.07 in 2020 | WB |
| Montenegro | 98.16 in 2020 | WB |
| Morocco | 77.35 in 2020 | WB |
| Mozambique | 48.87 in 2020 | WB |
| Myanmar | 78.42 in 2020 | WB |
| Namibia | 71.26 in 2020 | WB |
| Nepal | 90.2 in 2020 | WB |
| Netherlands | 100 in 2020 | WB |
| New Zealand | 100 in 2020 | WB |
| Nicaragua | 59.11 in 2020 | WB |
| Niger | 39.15 in 2020 | WB |
| Nigeria | 61.66 in 2020 | WB |
| North Macedonia | 97.47 in 2020 | WB |
| Norway | 100 in 2020 | WB |
| Oman | 76.25 in 2020 | WB |
| Pakistan | 88.6 in 2020 | WB |
| Palau | 99.76 in 2020 | WB |
| Palestine | 98.72 in 2020 | WB |
| Panama | 86.32 in 2020 | WB |
| Papua New Guinea | 39.07 in 2020 | WB |
| Paraguay | 99.11 in 2020 | WB |
| Peru | 80.8 in 2020 | WB |
| Philippines | 91.06 in 2020 | WB |
| Poland | 100 in 2020 | WB |
| Portugal | 99.74 in 2020 | WB |
| Republic of Moldova | 85.48 in 2020 | WB |
| Romania | 100 in 2020 | WB |
| Russian Federation | 91.54 in 2020 | WB |
| Rwanda | 55.64 in 2020 | WB |
| Saint Lucia | 96.81 in 2020 | WB |
| Samoa | 91.78 in 2020 | WB |
| Sao Tome and Principe | 74.3 in 2020 | WB |
| Senegal | 75.24 in 2020 | WB |
| Serbia | 95.84 in 2020 | WB |
| Sierra Leone | 52.75 in 2020 | WB |
| Slovakia | 100 in 2020 | WB |
| Slovenia | 99.4 in 2017 | WB |
| Solomon Islands | 59.41 in 2020 | WB |
| Somalia | 37.08 in 2020 | WB |
| South Africa | 83.33 in 2020 | WB |
| South Sudan | 33.59 in 2020 | WB |
| Spain | 100 in 2020 | WB |
| Sri Lanka | 90.54 in 2020 | WB |
| Sudan | 53.2 in 2020 | WB |
| Suriname | 96.57 in 2020 | WB |
| Sweden | 99.72 in 2020 | WB |
| Switzerland | 100 in 2020 | WB |
| Syrian Arab Republic | 92.08 in 2020 | WB |
| Tajikistan | 76.64 in 2020 | WB |
| Thailand | 100 in 2020 | WB |
| Timor-Leste | 80.49 in 2020 | WB |
| Togo | 52.12 in 2020 | WB |
| Tonga | 98.47 in 2020 | WB |
| Tunisia | 93.94 in 2020 | WB |
| Turkey | 96.03 in 2020 | WB |
| Turkmenistan | 100 in 2020 | WB |
| Tuvalu | 100 in 2020 | WB |
| Uganda | 48.23 in 2020 | WB |
| Ukraine | 100 in 2020 | WB |
| United Arab Emirates | 99.99 in 2015 | WB |
| United Kingdom | 100 in 2020 | WB |
| United Republic of Tanzania | 45.45 in 2020 | WB |
| United States of America | 99.67 in 2020 | WB |
| Uruguay | 95.3 in 2020 | WB |
| Uzbekistan | 96.07 in 2020 | WB |
| Vanuatu | 88.4 in 2020 | WB |
| Venezuela (Bolivarian Republic of) | 86.4 in 2015 | WB |
| Viet Nam | 95.51 in 2020 | WB |
| Yemen | 50.68 in 2020 | WB |
| Zambia | 48.23 in 2020 | WB |
| Zimbabwe | 48.28 in 2020 | WB |
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