Our colleagues in the Western District, in Trien v. Croasdale Const. Co. Inc. 874 S.W.2d 478, 479-480 (Mo.App. W.D.1994), addressed the issue of implied warranty as to septic system. Trien (homeowners) had contracted with Croasdale Construction Company to build a house and filed an action against Croasdale when the septic tank failed to perform its sewage disposal function and as a result affluent surfaced. Id. at 480. Croasdale attempted to avoid liability by claiming that it was merely a contractor building a house according to the specifications furnished by Trien. However, there were no specifications in the contract as to the septic system other than the provision that the system comply with the standards of Platte County Health Department. Id. Trien left the design, construction and approval of the septic system to the expertise of Croas-dale. The health department approved the design and installation in reliance on percolation tests performed by Croasdale. Id. Our colleagues in the Western District found that the submission of the breach of implied warranty of fitness for a particular use was proper and was supported by *852sufficient evidence. Thus, the court found that the submission of implied warranty was proper even though the septic design and installation was approved by Platte County Health Department.