The low water-holding capacity in combination with the good drainage characteristics of sandy soils means the soil will not hold as much water for the plant and will not hold it as long. Some coastal wells may not be suitable for extended irrigation due to salt content. This salt will build up in the soil over a period of time. Many of these wells can be utilized if managed properly, especially since rainfall helps leach the salts out of the soil profile. Other upstate wells may have high concentrations of iron.
Iron stays in solution until it is contacted by air, then it oxidizes into a solid form.
Municipal water systems are usually excellent sources of water. Their major drawback is the cost of the water. If you plan to use a municipal water source, plan on installing an irrigation water meter. The water charge is usually the same as the household meter, but there are no sewer charges on the irrigation water since this water is not returned to the municipal sewer system. Some type of backflow prevention device at the meter to protect the water supply will be required by the municipality.