Families have been told to start using less water now as officials say they are preparing for the possibility of "another hot, dry" spell this summer.
The National Drought Group said “everyone must work together and remain vigilant” as it urged households across the country to conserve water.
Water companies today held a crisis summit with ministers and officials from the Environment Agency and the Met Office.
A temporary hosepipe ban will be introduced tomorrow in an area of Devon.
The NDG said unprecedented weather swings, from the driest February in 30 years to the wettest March in 40 years, highlight how we cannot rely on the weather to avoid drought.
Experts have urged water companies and individuals to focus on preserving water now to get ahead of future dry spells after the country experienced contrasting weather in the past couple of months.
Last year was the UK's warmest year on record, the Met Office confirmed.
A spell of heatwaves in June 2022 led to the UK experiencing its fourth warmest summer on record - and temperatures hit beyond 40C for the first time.
The record of 40.3C was recorded at Coningsby in Lincolnshire on 19 July.
The National Drought Group said it is managing water resources to reduce the risk that it will need to bring in measures, such as hosepipes across larger areas of the country.
As of the beginning of April, total reservoir capacity across the country was at 94%.
This compares with 49% at the end of September 2022, when reservoirs were at their lowest following the drought through summer.
John Leyland, an Environment Agency director who chairs the NDG, said: “Whilst water levels have improved across most of the country, a dry February followed by an particularly wet March has highlighted that we cannot rely on the weather alone to preserve our most precious resource ahead of summer.
“This is why the Environment Agency, water companies and our partners continue to take action to ensure water resources are in the best possible position both for the summer and for future droughts.
“We all owe it to the environment and wildlife, to continue to use water carefully to protect our precious rivers, lakes and groundwater.”
Water Minister Rebecca Pow said: “The recent rainfall came as a relief to many people across the country, but we should approach the improving drought situation cautiously.
“The growing pressures on our water network mean it is more important than ever that we take measures to increase our resilience to drought and ease the pressures on our water supply.
“Through our Plan for Water, we are ensuring key water supply infrastructure such as reservoirs can be built more quickly, helping increase our resilience to drought for the long-term. At the same time, we expect water companies to step up their own efforts to adapt to changing weather patterns and tackle leakage, to better deliver for customers.”
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