The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.
The result was: promoted by Cwmhiraeth (talk) 07:22, 30 March 2019 (UTC)
Overall: The article is long enough and compliant with policy; the image looks good and QPQ is done. I prefer the main hook to ALT1 because it is more descriptive, the contrast between once-polluted and recreation is interesting, and readers probably do not know what the "white hills" mentioned in ALT1 are. In the main hook, I'd suggest a rephrasing of "but due to improvements is now" to "but following improvements, it is now" as the original construction reads slightly awkwardly and was missing a comma (which I inserted). Maybe the types of improvements can also be specified, but I'm content with leaving that part as it is. ComplexRational (talk) 23:39, 17 March 2019 (UTC)