WATERLINE & WIRE: The waterline to the house should be 160# poly pipe or better.
100# poly pipe is weaker and more vulnerable to damage. 12 gauge, or larger, UF wire should always be used. Never use NM-B household wire, because it is not designed for underground applications. All underground fittings should be brass. Galvanized fittings will corrode and eventually leak. Brass fittings will not. T.L. Stevens Well Company uses 200# poly pipe, 12 gauge UF wire and all brass fittings underground, whereas other companies may use inferior materials.
PUMPS: The size of your pump is determined by a combination of factors; well production, water usage, drop pipe size, static water level and pressure needed. Biggest is not always best. A knowledgeable well company will look at manufacturer's pump curves, and install the correctly sized pump for the application. If the pump is undersized you will have low water volume, low water pressure and the pump will not last long, because it is constantly being overworked. If the pump is oversized, it will start and stop too often. Frequent cycling will cause failure to electrical components (fuses, switches, contacts, etc.) much faster, the power usage is greater, and the life expectancy of an oversized pump decreases. It will also water hammer (sudden pressure spikes), which is hard on the pump and plumbing.
There are 2 types of pumping system. The
constant pressure system is far superior to the 50-year-old technology using the standard pump and pressure tank. You can take showers, run the dishwasher, flush the toilet, etc., at the same time without experiencing major pressure loss; plus you will not experience extreme temperature changes in the water like you will with the standard pumping system. This quiet constant pressure system has a gradual start/stop, which helps prolong the life of the pump, pipes and fixtures. The pressure tank is wall mounted and takes up a lot less space in the utility room. This system will
quietly deliver the same water pressure throughout the entire home.
The standard type pumping system operates on 40-60 PSI, which means that the pump supplies water to the pressure tank until the pressure reaches 60 PSI. The pump does not replenish the water supply until the pressure drops to 40 PSI. The 20 pound pressure loss will be noticeable when you are taking a shower and other sources are demanding water at the same time. This pump has an instant on/off which is harder on the pump, pipes and fixtures.
PRESSURE TANKS: The pressure tank should be sized properly for the water system. A tank which is too small will cause the pump to start/stop too often, which reduces the life expectancy of your pump. A tank which is too large is not necessary, will waste installation time, take up more space in the utility room, and the tank will cost more without serving any real benefit. Your water will not be as fresh because more water is held in a larger tank.
PLUMBING: All plumbing should be properly sized and neatly installed. RO lines for a future system can be installed.
WATER TREATMENT EQUIPMENT: Be sure your water is tested to determine the degree of iron and hardness, before any equipment is installed. Undersized equipment will fail prematurely. Determine GPM (gallons per minute) output of treated water. Internal inlet/outlet ports of the unit may restrict water flow, if too small.
IRRIGATION SYSTEMS: An irrigation specialist needs to know how many gallons per minute your well and pump will continuously supply. This GPM figure will determine the number of zones your irrigation system requires, and their on/off time configuration. Too many zones sprinkling at the same time will cause excessive stress on your pump, thus shortening its life.
MINNESOTA DEPARTMENT OF HEALTH: The “Well owner's handbook – A consumer's guide to water wells in Minnesota” can be found by going to the below web address:
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