WELL DRAWDOWN TEST INSTALL

When Should I Have Water Yield Testing Done? Failing well pumps and clogged wells, however, can also diminish yield. Generally speaking, a flow rate of four or five gallons per minute should suffice for your average domestic private well user.īesides dry spells impacting aquifer recharge, well yield may decline due to increased demand from other well users in your region drawing from the same groundwater source. Such a calculation occurs right after a flow rate test where the water level is checked immediately after and then again at a set interval of elapsed time.Ī good well yield depends on a variety of specific factors, including the local area and the household water demand. The well output in gallons per minute and the drawdown are assessed regularly throughout to determine average rates and produce the most accurate yield.ĭuring these tests, it’s essential to direct the pumped-out water away from the well to avoid “artificial recharge.” This is when outflow returns to the well and throws off calculations of drawdown.Īnother measure that can suggest a well’s yield is the recovery rate: how quickly the water level in the well replenishes following a sustained period of continuous pumping. Typically, this will take at least one or two hours depending on specifics such as local regulations and can take as many as 24 hours. The test requires continuous operation of the well pump for an extended period. Mathematically speaking, this kind of yield test produces a calculation of gallons per minute per foot of drawdown. One standard way to gauge a well’s yield is to compare the pumping rate against the rate at which water drops during pumping - the pace of drawdown, in other words. This describes the rate at which water is pumped from the well without dropping the static water level. To determine how adequately a well will supply water in demanding periods such as prolonged droughts or peak water usage, it’s important to establish its maximum safe yield. It can also be referred to as water flow testing, water drawdown testing, specific capacity testing, or well recovery testing. Water yield testing indicates how much a well can sustainably output during peak demand.

WELL DRAWDOWN TEST INSTALL

Whether it’s part of a new install or a system check-up on an existing well, we’ve got you covered when it comes to calculating water yield and, if necessary, exploring options for improving your water flow! What is Water Flow Testing? Here at Greco and Haines, we offer expert well water yield testing services in Derby, Woodbridge, Orange, and all over Connecticut. One fundamental measure of a private well’s performance is its water yield.

Well drawdown test