https://stream.echo6.co/videos/watch/07b29150-e009-40e1-8233-e286275ad291 This Old House plumbing and heating expert Richard Trethewey cleans up some drinking-water problems. (See below for a shopping list.) SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse Shopping List for How to Test for Hard Water and Add Softeners: sediment filter, water softener, About This Old House TV: This Old House is the No. 1 multimedia home enthusiast brand, offering trusted information and expert advice through award-winning television, a highly regarded magazine, and an information-driven website. This Old House and Ask This Old House are produced by This Old House Ventures, LLC and are presented on PBS by WETA Washington, DC. Follow This Old House and Ask This Old House: Facebook: http://bit.ly/ThisOldHouseFB Twitter: http://bit.ly/ThisOldHouseTwitter http://bit.ly/AskTOHTwitter Pinterest: http://bit.ly/ThisOldHousePinterest Instagram: http://bit.ly/ThisOldHouseIG http://bit.ly/AskTOHIG Tumblr: http://bit.ly/ThisOldHouseTumblr For more on This Old House and Ask This Old House, visit us at: http://bit.ly/ThisOldHouseWebsite How to Test for Hard Water and Add Softeners | This Old House https://www.youtube.com/user/thisoldhouse/ Thu, 16 Apr 2026 09:57:58 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/07b29150-e009-40e1-8233-e286275ad291 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.