The BirdLife International Aquatic Warbler Conservation Team maintains a list of critical and important threats to the Aquatic Warbler on their website http://www.aquaticwarbler.net/sar/. For more details on the threats please visit their website.

• Change in hydrological regime in key sites (critical)
• Breeding habitat changes due to abandonment (critical)
• Habitat changes and habitat loss in wintering areas (high, potentially critical)
• Loss of breeding habitat including drainage and peat extraction (medium, but locally critical)
• Breeding habitat changes due to uncontrolled burning (high)
• Eutrophication by waste water (medium)
• Eutrophication resulting from mire drainage (medium)
• Road building (overall low, but locally high)
• Unsuitable management by cutting or grazing (low, but locally high)
• Disturbance caused by man (low and localised)
• Habitat change and loss at migration sites (unknown)