Ocean City Water Hardness & Quality Report (2026)

The Ocean City Municipal Utilities Authority (OCMUA) provides drinking water to residents and visitors in Ocean City, New Jersey. This barrier island community, home to about 10,000 people, receives a mixed water supply. The primary source comes from groundwater wells that tap into the Cohansey-Kirkwood aquifer system. This is supplemented by surface water drawn from the Great Egg Harbor River watershed or nearby coastal reservoirs. All raw water is treated at the OCMUA Water Treatment Plant, where it undergoes filtration, disinfection using chlorination, and corrosion control measures to ensure it meets both state and federal drinking water standards. The utility serves the entire Ocean City area, a popular destination spanning approximately 8 square miles.

The geology underpinning Ocean City's water supply is characteristic of the coastal plain. The unconfined sands of the Miocene Kirkwood-Cohansey aquifer are a key feature, containing quartz sands, clays, and shell beds. As water interacts with these materials, minerals dissolve, contributing to the water's character. This Coastal Plain formation, with its unconsolidated sediments, allows for moderate mineralization through processes like cation exchange in sandy layers and the presence of minor limestone fragments. This geological makeup results in a moderately hard water supply, typical for seaside regions, and distinct from the softer waters found in areas with glacial deposits or the harder waters associated with inland limestone karst formations.

This moderately hard water can lead to noticeable scale buildup within appliances such as water heaters, dishwashers, and coffee makers. Over time, this scale accumulation can reduce efficiency and potentially increase energy costs. You might also find that laundry feels stiffer, and soaps and detergents may not lather as effectively, requiring you to use more product. To manage this, regular descaling of fixtures with vinegar and annual flushing of hot water heaters are recommended. If you frequently notice spotting on glassware or experience dry skin and hair, particularly during the high-usage summer months, installing a water softener is a worthwhile consideration.