Since it is a lagoon, eutrophication and organic contamination are the most serious problem in the sea area of Wakasa Bay, Kyoto Prefecture where waste water standards for nitrogen and phosphorus are regulated.
潟湖であることから京都府下の若狭湾の窒素・燐排水基準の規制のある海域では富栄養化と有機汚濁が最も深刻である。