ensure maintenance is carried out by a competent person (someone who has the necessary skills, knowledge and experience to carry out the work safely) 1  maintain plant and equipment regularly â use the manufacturerâs maintenance instructions as a guide, particularly if there are safety-critical features.
HDPE (High Density Polyethylene). 3/4 HDPE will cost about $45.00 for 100' ($0.45/ft), so depending on the amount required can be much cheaper than the previous options. HDPE is used by many municipalities as water supply lines, so it has been tried and tested in underground applications.
Items like unions, water pan, fittings can add easily add $100 to the cost of the HD standard install cost. If you know the parts they will need you can buy these items on your own to have handy. For instance they will usually charge $50+ for a water pan when you can get the same pan from HD on your own for $20.