6483
The sewage treatment for the city was awarded to Envirotech in 1977 , and was renewed with the same company through at least 1982 .
 organization: Envirotech
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 organization: Envirotech