Fire brigades rushed to the scene in an attempt to stem the raging inferno on an industrial estate near Botany Way.
Ash is believed to be raining down on the nearby town as four fire engines attempt to tackle the blaze along with specialist equipment, including a foam lorry, Hose Layer and Water Bowser.
Essex police have set up a cordon around the incident, while train services which would have passed by the blaze have been put on hold.
Essex police have set up a cordon around the incident
Ash is believed to be raining down on the nearby town
It is unclear if anyone has been injured in the incident.
An Essex Police spokesman said: "Police are at the scene of a major incident involving a fire at a site in the Botany Way area of Purfleet.
"Our officers are assisting Essex Fire and Rescue Service at the scene."
More to follow…