The original version of this Article contained errors. The fourth sentence of the first paragraph in the section titled “Halving the proportionof untreated wastewater (SDG6.3)” incorrectly read “The largest expansions required before 2030 are in China (40 million m3), the USA (16 million m3) and India (15 million m3), with these three countries alone accounting for ~45% of the required expansions.” The correct version states ‘billion m3 yr-1’ in place of ‘million m3’. In addition, the first sentence of the caption for Figure 2 incorrectly read “a Expansions in wastewater treatment capacity (106 m3) required by 2030 to achieve SDG6.3 for the top 30 countries”. The correct version states “(109 m3 yr-1)” in place of “(106 m3)”. These errors have been corrected in both the PDF and HTML versions of the Article.
