Jami'an Kiwon Lafiyar Muhalli (wanda aka fi sani da Masu Kula da Kiwan Lafiyar Jama'a ko Ma'aikatan Kiwon Lafiyar Muhalli ) wato "Environmental Health Officers" suna da alhakin aiwatar da matakai don kare lafiyar jama'a, gami da gudanarwa da zartar da doka da ta shafi lafiyar muhalli da ba da tallafi don rage haɗarin lafiya da haɗari. Jami'an Kiwon Lafiyar Muhalli suna kiyaye ruwan mu, abinci, iska, ƙasarmu, kayan aiki da sauran abubuwan muhalli (abubuwan da suka shafi mutum) da lafiyar haɗarin lafiya, walau na halitta, na sinadarai ko na zahiri. Hakanan suna magance abubuwan da ke da alaƙa waɗanda ke tasiri halaye. Jami'an Kiwon Lafiyar Muhalli suna tantancewa da kuma kula da abubuwan da suka shafi muhalli waɗanda ka iya shafar lafiyar, don hana cuta da ƙirƙirar yanayin tallafawa na kiwon lafiya. Masu ƙayyade mahalli na kiwon lafiya suna taka muhimmiyar rawa ga lafiyar al'umma da ƙoshin lafiya, don haka Jami'an Kiwon Lafiyar Muhalli suna da mahimmanci wajen inganta sakamakon kiwon lafiyar jama'a da rage nauyin cuta.