Water become challenging source in my native (Tamilnadu, India). While I build new home, it makes me think about saving the rainwater.

Ground water(borewell) is the only water source for us. This also having chance to dry on summer. So I like to use the rain water in efficient way.

Is it good to mix the ground and rain water? or should have two separate water storing tanks(underground). Which one is cost effective?

I was thinking to use the two tanks for two different purpose.

Rain water (After basic filtering)

• Toilet
• Washing
• Terrace Garden
• Kitchen Sink

Ground water

• Drinking (Purified)
• Both
• Cooking

Needless to say, I also plan to save the good water from kitchen sink(dowel sink method) and purifier waste water in barrel for ground garden plants.

So please advice me?

Water become challenging source in my native (Tamilnadu, India). While I build new home, it makes me think about saving the rainwater.

Ground water(borewell) is the only water source for us. This also having chance to dry on summer. So I like to use the rain water in efficient way.

Is it good to mix the ground and rain water? or should have two separate water storing tanks(underground). Which one is cost effective?

I was thinking to use the two tanks for two different purpose.

Rain water (After basic filtering)

• Toilet
• Washing
• Terrace Garden
• Kitchen Sink

Ground water

• Drinking (Purified)
• Both
• Cooking

Needless to say, I also plan to save the good water from kitchen sink(double sink method) and purifier waste water in barrel for ground garden plants.

So please advice me?