Many people in the southwestern peninsula of Haiti are in dire need of safe drinking water because Hurricane Matthew, which roared through on Oct. 4, ruptured water pipes and contaminated many wells with sewage from latrines or ocean storm surge. Here are some of the international organizations working to help:

— Doctors Without Borders. Website: http://www.doctorswithoutborders.org/country-region/haiti

— Water Mission. Website: https://watermission.org/news/moving-with-urgency/

— Bomberos Unidos Sin Fronteras. Website: http://www.busf.org/emergencias/?lang=en

— Heifer International. Website: https://www.heifer.org/join-the-conversation/blog/2016/October/heifer-monitoring-hurricane-matthew.html

— UNICEF. Website: http://www.unicef.org/media/media_92963.html