The fire broke out in St Sampsons in the morning of Friday 3rd August.
It was initially reported to be at Guernsey's recycling plant by emergency services but later confirmed at Guernsey Metals, a scrapyard near The Bridge.
A Guernsey reservoir is back in action today following yesterday's fire.
Guernsey Water announced last night that it had taken the Longue Hougue Reservoir out of supply as a precautionary measure, but it is now running as normal.
The fire broke out at Guernsey Metals in St Sampsons yesterday morning.
A report found the process for removing batteries was not adequate
The Longue Hougue Reservoir, opposite to the Bulwer Avenue scrapyard, has been taken out of supply this evening as a precautionary measure.
The Chairman for Guernsey Recycling has said they suspect a lithium battery started the fire in St Sampsons this morning.