Six members of the Waterkeeper Alliance said Wednesday they intend to sue companies involved in a Gulf of Mexico oil well that has been leaking since at least October 2006.

The alliance has filed a notice of intent to sue under the Clean Water Act against the companies, but is required to give 60 days before filing a formal lawsuit so as to try to settle issues before legal action is taken.

In addition, the notice of intent includes a notice of endangerment under the Resource Conservation and Recovery Act.

The action announced Wednesday is being brought by alliance members Atchafalaya Basinkeeper based in Baton Rouge; Emerald Coastkeeper based in Pensacola, Fla.; Galveston Baykeeper based in Seabrook, Texas; Louisiana Bayoukeeper in Barataria; the Lower Mississippi Riverkeeper; and the Louisiana Environmental Action Network in Baton Rouge.

The groups are being represented by Tulane Environmental Law Clinic.

“At least one of the Taylor Well(s) has been leaking a significant amount of oil into the Gulf of Mexico since at least October 7, 2006. Since then, the Taylor Well(s) discharge between 100 to 400 gallons of oil per day. This discharge produces visible slicks of oil on the water. One slick, observed on June 18, 2011, contained an estimated 3,157 gallons of oil,” according to the notice of intent to sue.