Density of pure water at 4 degree Celsius is:

1. Water reaches its maximum density at 4 degree Celsius. 2. At that point density is about 1000 kg per cubic metre. 3. Equivalent to 1 g per cubic centimetre. 4. So the density is 1000 kg per cubic metre. _Source: Selina Concise Physics ICSE Class 8, Ch 1 'Matter'_