This category is within the scope of WikiProject International development, a collaborative effort to improve the coverage of international development, including such areas as appropriate technology, microfinance and social issues, on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.International developmentWikipedia:WikiProject International developmentTemplate:WikiProject International developmentInternational development articles
This category is within the scope of WikiProject Water, a collaborative effort to improve the coverage of Water supply-related subjects on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.WaterWikipedia:WikiProject WaterTemplate:WikiProject WaterWater articles
This category is within the scope of WikiProject Civil engineering, a collaborative effort to improve the coverage of Civil engineering on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Civil engineeringWikipedia:WikiProject Civil engineeringTemplate:WikiProject Civil engineeringCE articles
This category is within the scope of WikiProject Architecture, a collaborative effort to improve the coverage of Architecture on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.ArchitectureWikipedia:WikiProject ArchitectureTemplate:WikiProject ArchitectureArchitecture articles
This category is within the scope of WikiProject Health and fitness, a collaborative effort to improve the coverage of health and physical fitness related articles on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Health and fitnessWikipedia:WikiProject Health and fitnessTemplate:WikiProject Health and fitnessHealth and fitness articles
This category is within the scope of WikiProject Food and drink, a collaborative effort to improve the coverage of food and drink related articles on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Food and drinkWikipedia:WikiProject Food and drinkTemplate:WikiProject Food and drinkFood and drink articles
Delete unrelated trivia sections found in articles. Please review WP:Trivia and WP:Handling trivia to learn how to do this.
Add the {{WikiProject Food and drink}} project banner to food and drink related articles and content to help bring them to the attention of members. For a complete list of banners for WikiProject Food and drink and its child projects, select here.
This category is within the scope of WikiProject Sanitation, a collaborative effort to improve the coverage of Sanitation on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.SanitationWikipedia:WikiProject SanitationTemplate:WikiProject Sanitationsanitation articles
This category is within the scope of WikiProject History, a collaborative effort to improve the coverage of the subject of History on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.HistoryWikipedia:WikiProject HistoryTemplate:WikiProject Historyhistory articles
Start a discussion about improving the Category:History of water supply and sanitation page
Talk pages are where people discuss how to make content on Wikipedia the best that it can be. You can use this page to start a discussion with others about how to improve the "Category:History of water supply and sanitation" page.