We have health warnings against lake swimming in dozens of locations across Ireland because of contamination with harmful algal blooms and the presence of toxic blue-green algae in the water — all boosted by artificially elevated levels of nitrogen and phosphorous in the water

Irish Water says it has already made 'consistent progress' in upgrading the country’s wastewater treatment system

Mr Justice Senan Allen will decide later whether the matter should be returned to An Bord Pleanála for reconsideration.