Examples of tanks for water catchment, or rainwater harvesting, seen on Maui Hawaii
Previously I explained how water catchment works, here in Hawaii. Now here are some examples of tanks. Most of these are the corrugated metal tanks built by Scafco. These are the same structures used to store grain on large farms.
This camo-paint one is mine and yes, I painted it. Isn't is a beauty? The close up picture shows the little hatch where you can peek in to see your lovely rain water. And there's usually a ladder in case you want to climb to the top and feel like the king of the world. This one is 12,000 gallons. It's built of one "ring" which is made up of 8 sections bolted together. It sits on a concrete slab. Inside is a plastic liner. The lid is overkill, but it's nice to have a good cover to keep out sunlight and debris.
Below is another example of a cover to keep out debris. It's a simple framework creating a raised portion in the middle so leaves and stuff don't build up. This tank has 2 "rings".
As you see, you can have many rings, making for a taller tank. Basically, the taller you go then the smaller the diameter needed to hold the same amount of water. Tall or short, it's your choice.
Below is an example of a low profile tank with a very large diameter. You don't need to have the inflow going into the top like that though as it can be plumbed in from underneath. If you can avoid the pipe in the top, it makes it easier to fit the cover on. On the left sde is the pressure tank, and behind that a little box with the pump.
Below is an example of a poor cover. Actually I'm not sure if there's even a cover and this might be the liner we see. I don't recommend having a tank without a cover, or one that sags so much that water collects.
This tall water tower is from Kula Maui and it provides water to a bunch of homes in a subdivision. The purpose of being up so high means that water can be supplied to the homes without any pumping, called gravity flow.
Below is a concrete tank being constructed in Haiku Maui. I think it was 30,000 gallons. It was a lot of work and took skilled people to make it happen. Concrete tanks cost more, but they will last a lot longer. Not many people do this anymore.
So that's it. Let me know if you have any questions about water tanks on Maui. I can connect you with people who build them and maintain them so you don't have to. If you're looking to buy land or a home with catchment, you can feel comfortable knowing that it's a great alternative to county water.