Puzzle of Parisian Progress

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Across
  1. 4. The Olympic event involves swimming, running, and cycling.
  2. 6. Refers to the positive change in the condition of the river
  3. 7. Wastewater and waste matter carried in underground pipes
  4. 9. The river in the north of the city where swimming was permitted in 2017.
  5. 12. Bacterial disease transmitted through animal urine
  6. 14. Parisian official predicting increased confidence in swimming in the Seine
  7. 16. sports for individuals with disabilities
  8. 17. Significant and lasting impacts resulting from the Olympics
  9. 20. Synonym for Quayside
Down
  1. 1. The building set to store wastewater overflow in times of heavy rain.
  2. 2. Final stage of a process
  3. 3. Large cylindrical underground space
  4. 5. The state of being unsuitable for swimming
  5. 8. bacteria Microorganisms indicating water contamination
  6. 10. Synonym for rejuvenation
  7. 11. swim Annual Christmas cross-river competition
  8. 13. The venue for the opening ceremony of the Olympics in Paris
  9. 15. The type of drainage infrastructure causing problems in the 19th Century.
  10. 18. Recreational fishing
  11. 19. The event banned in the Seine for a century due to polluted water.