Jersey City’s drinking water comes from the Boonton Reservoir, a 700-acre reservoir fed by the Rockaway River in northern New Jersey. Located about 30 miles northwest of the city in Boonton and Parsippany-Troy Hills Townships, this reservoir has been Jersey City’s primary water source since 1904. The water is treated at a plant on-site before traveling through pipes to reach homes and businesses across the city.
The Boonton Reservoir
The Boonton Reservoir sits on a 1,300-acre property in Morris County, collecting water from the Rockaway River as it flows through the highlands of northern New Jersey. The reservoir itself covers about 700 acres. Combined with a secondary storage reservoir, the system can hold 11.3 billion gallons of water, giving Jersey City a substantial buffer against drought or seasonal fluctuations in river flow.
The Rockaway River watershed that feeds the reservoir is a mix of forested land, suburban development, and open space. Because the quality of the source water depends heavily on what happens upstream, Jersey City and conservation groups like the Open Space Institute have worked on plans to protect the land surrounding the reservoir and improve water quality before it ever reaches the treatment plant.
How the Water Is Treated
Before reaching your tap, water from the Boonton Reservoir goes through a full treatment process at the Jersey City Water Treatment Plant, which sits right at the reservoir site in Boonton. On an average day, the plant purifies about 50 million gallons of water. During peak demand, it can handle up to 80 million gallons per day.
Treatment starts with coagulation, where chemicals are added to clump together tiny particles suspended in the water. The water then passes through filters that remove those clumps along with microscopic impurities. After filtration, the water is disinfected to kill bacteria and other pathogens.
The final step addresses a concern specific to older cities like Jersey City: lead and copper from aging pipes. The treatment plant applies a phosphate-based coating process that creates a protective barrier inside water mains and service lines. This reduces the chance of lead and copper dissolving into the water as it travels from the plant to your faucet. It’s a preventive measure, not a fix for the pipes themselves, but it significantly lowers exposure risk.
Who Manages the System
Jersey City’s water system involves a partnership between public oversight and private operation. The Jersey City Municipal Utilities Authority (JCMUA) oversees both the water and sewerage systems. Day-to-day operations, including billing and treatment, are handled by private water companies. Veolia, a global water services company, currently manages billing for customers. The treatment plant and distribution network have historically been operated by private contractors under the authority’s supervision.
Lead Pipes and Ongoing Concerns
Like many cities in the northeastern U.S., Jersey City has aging infrastructure that includes lead service lines connecting water mains to individual homes and buildings. While the corrosion control treatment at the Boonton plant helps reduce lead exposure, the long-term solution is replacing those pipes entirely.
New Jersey passed a Lead Service Line Replacement Law in July 2021 that requires all community water systems in the state to identify and replace every lead service line within 10 years. For Jersey City, that means a large-scale infrastructure project is underway. If your home was built before the 1980s, there’s a reasonable chance it connects to the water main through a lead service line. You can check with the JCMUA to find out whether your address has been identified for replacement.
Running your tap for 30 seconds to two minutes before drinking, especially first thing in the morning, helps flush out water that has been sitting in contact with pipes overnight. This is a practical step regardless of whether your service line contains lead, since interior plumbing in older homes can also contain lead solder.
Water Quality at the Tap
Jersey City publishes an annual Consumer Confidence Report that details what’s in the water after treatment. The report covers dozens of contaminants, from bacteria to metals to industrial chemicals. The treatment process at Boonton is designed to bring all regulated contaminants below federal and state limits before the water enters the distribution system.
Across New Jersey, regulators have also been paying closer attention to PFAS, a group of long-lasting synthetic chemicals found in everything from nonstick cookware to firefighting foam. The state has set maximum contaminant levels for three specific PFAS compounds at 13 to 14 parts per trillion, which are among the strictest standards in the country. Statewide groundwater monitoring has found PFAS at varying levels, though Jersey City’s surface water source (the reservoir) faces different contamination risks than groundwater-fed systems.
The bottom line: Jersey City’s water originates from a well-established reservoir system in the Morris County highlands, undergoes extensive treatment before it reaches your home, and is subject to both federal and New Jersey’s notably strict state-level quality standards. The biggest variable in water quality is often the last stretch of pipe between the street and your faucet, which is why the statewide lead line replacement effort matters as much as what happens at the treatment plant.