What is the impact of impure mixing water used in concrete?

Impure water may contain chemicals that can cause chemical reaction to cement, that can affect the designed strength of concrete.

what you mean about impure water,are consider turbidity,or contaminated water with chemical?

• Effecting concrete setting time
• Concrete compressive strength may reduced
• Inconsistent concrete quality
• Impact on Concrete workability
• Concrete life may be reduced
• Impact durability and stability of concrete
• Make stain
• Corrosion of steel
• Volume instability
• Craks may occour/develop
• Impermeabilty impact