You did something truly amazing this World Water Day. You helped turn the world blue! On 22 March you went #Blue4Water in your masses to show your support for clean, safe water for everyone everywhere. And for that, we are incredibly grateful. From turning your profile pictures blue on social media, to painting your faces blue in real life, you really helped to spread the message this World Water Day. Everyone from embassy officials to school children, people and their pets to celebrities and entire cities got in on the act. See the many ways the world turned #Blue4Water in our Storify round-up > You can still spread the ripples of change Change your profile picture on Facebook and Twitter with our blue filter using the app below. It's never too late to show your support. Sign the petition – and ask the UK government to lead the way in getting taps and toilets to everyone everywhere by 2030. Tell us how you went #Blue4Water! – Share your photos in our Facebook group or on Twitter with #Blue4Water and @WaterAidUK.