Va. Code § 21-230
Every such petition shall pray for the creation of the proposed sanitation district, and set forth the name of the proposed sanitation district (which shall include the words "sanitation district"), shall fix the boundaries thereof, shall name the cities and counties and towns which are in whole or in part to be embraced therein and shall contain an allegation (1) that the proposed sanitation district includes within its territorial limits watercourses or streams which are polluted, (2) that no part of the proposed sanitation district is within the territorial limits of an existing sanitation district, (3) that the proposed sanitation district is an integral whole and does not completely surround any territory not included in the proposed or some existing sanitation district, (4) that the creation of the proposed sanitation district in accordance with this chapter will provide a means for abating or preventing the pollution of waters of the proposed sanitation district and will benefit all the property within the proposed sanitation district, (5) that the creation of the proposed sanitation district has been approved by the State Health Commissioner as providing a practical means for abating or preventing the pollution of the waters of the proposed sanitation district, (6) that the petition has been approved and the prayer thereof joined in by each city, county and town which is in whole or in part embraced within the proposed sanitation district, expressed by resolution adopted by the vote of a majority of the governing body thereof.
Va. Code § 21-230