hwp
Platinum Member
My cistern is basically an enclosed concrete box with an access hatch and is located under the laundry room in our house. As a result I cannot use a mechanical float system to indicate the water level in my cistern. I came across a product made by Rain Harvesting from Australia called "Rain Alert" that meets my needs. Rain Harvesting recently set up a distribution system for North America and some of its products have been redesigned to meet North American standards (e.g. 120VAC). The Rain Alert system uses a transmitter mounted on the top of a tank, or in my case in the hatch opening at the roof level of my cistern, and a remote receiver. The receiver has dip switches that can be set to match the depth of the tank (cistern) up to a max. of 10 feet. The receiver plugs into a ordinary wall outlet and can be located up to 150 feet from the transmitter. The receiver has 10 bars to indicate the relative depth of water in the tank. There is an early warning "low level" indicator and an "empty" indicator. The Rain Alert system isn't for everybody as it is rather expensive at about $150 but it beats having to dip the cistern to know how much water is in it. The relevant web site is rainharvesting.com.
