The YT27 will be the 23rd Yhdyskuntatekniikka -exhibition
The first Yhdyskuntatekniikka -exhibition was held in Kouvola 1983. There were 112 exhibitors and 3.100 m2 of exhibition space, 60 % of which was outside. The exhibition attracted 3.700 visitors.
History of the exhibition's organization
An agreement to organize the exhibition was concluded in the spring of 1982 between the Finnish Water Utilities Association (FIWA), INFRA ry and the Finnish Association of Municipal Engineering (FAME). The Finnish Road Association participated in organizing the exhibition for the first time in 1991.
FIWA's staff handled the technical execution of the exhibitions, in collaboration with local trade fair organizers, until 2026. In conjunction with the YT27 exhibition, office of the Yhdyskuntatekniikka relocated to the FAME office. At the same time, cooperation with Jyväskylä Fair Oy has been intensified.
Below is a list of previous exhibitions and the locations where they were held. 
YT25 Tampere YT23 Jyväskylä YT21 Turku
YT19 Jyväskylä YT17 Jyväskylä YT15 Turku YT13 Jyväskylä YT11 Turku YT09 Tampere YT07 Turku YT05 Lahti YT03 Jyväskylä YT01 Tampere
YT99 Lahti YT97 Jyväskylä YT95 Tampere YT93 Hämeenlinna YT91 Lahti YT89 Jyväskylä YT87 Turku YT85 Tampere YT83 Kouvola