Water filter service in Edison, NJ

What is in the water in Edison

Edison is served by Middlesex Water Company .

Source water: A blend of surface water from the Delaware and Raritan Canal, treated at the Carl J. Olsen plant, and groundwater from wellfields including Park Avenue in South Plainfield. Because the blend changes, customers can notice differences in hardness when groundwater is reintroduced to the distribution system. Reported by Middlesex Water Company for 2024.

Which supply reaches an Edison address depends on the part of town. Middlesex Water serves part of Edison retail and separately sells wholesale water to Edison Township, alongside Rahway, Marlboro, Highland Park, Sayreville and the Old Bridge authority, so two Edison households can be on the same company through different arrangements and different infrastructure. The company's capital programme covers enhanced treatment at its largest plant and wellfield for PFAS compliance and improvements to corrosion control and chlorination. Establish which side you are on before specifying whole house equipment.

These figures describe the distribution system. Your own tap can differ, and for lead it very likely does.

We do not yet hold a sourced figure for every field on this page. Where something is missing it is left blank rather than estimated, because an unsourced number here would look like information.

Buildings and plumbing in Edison

Middlesex Water plans to replace every lead and galvanised steel service line with copper by 2031, covering both the utility owned portion and the property owner owned portion at no direct cost to the owner, under the New Jersey law signed on 22 July 2021 that requires replacement of the whole line from the main to the meter. An 18 million dollar loan from the New Jersey Water Bank funds work in Edison, Metuchen, South Amboy, South Plainfield and Woodbridge. Where the record is unknown you can identify the material yourself with a scratch test: a shiny silver scratch that a magnet will not stick to indicates lead, and a dull grey scratch that a magnet does stick to indicates galvanised steel.

PFAS in Edison

Middlesex Water has reported PFOA detections in its annual reports since 2008. When New Jersey's maximum contaminant level for PFOA took effect in 2021, the company's Park Avenue wellfield in South Plainfield exceeded it, and the wellfield was taken out of service in November 2021 once alternative supply could be switched in. A phased granular activated carbon treatment facility began introducing treated water in June 2022, and the completed 52 million dollar plant entered full service in July 2023. The company reports its PFOA running annual average at Park Avenue is now non-detect at the limits of current analytical methods.

Source: Middlesex Water Company, 2023. More on confirming and treating this on our PFAS page.

What this means in practice

• Chlorine and chloramine taste. Confirm with free and total chlorine test strip, plus the utility report for the disinfectant type.
• Lead in drinking water. Confirm with certified laboratory analysis of a first-draw tap sample.
• PFAS. Confirm with certified laboratory analysis using an epa-approved pfas method.

What these figures mean for filter choice

Lead is a plumbing question rather than a supply question in Edison, as it is everywhere. What that means practically is that a filter certified under NSF/ANSI 53 for lead at the tap you drink from sits downstream of the entire problem, whereas a whole-house filter at the point of entry sits upstream of nearly all of it and costs several times more.

Filters that apply here

• Lead reduction filters. Point-of-use filters certified for lead under NSF/ANSI 53.
• PFAS reduction systems. Reverse osmosis or a certified activated carbon system aimed at per- and polyfluoroalkyl substances.
• Under-sink carbon filters. A carbon block cartridge on the cold line under the sink.
• Reverse osmosis, tank. A membrane system under the sink that produces treated water to a dedicated tap and stores it in a small pressure tank.
• Whole-house filtration. A filter plumbed into the main line where water enters the building, so every tap, shower, and appliance downstream is fed treated water.

Installation in Edison

• Free water testing. Typically 45 to 60 minutes.
• Whole-house filter installation. Typically 3 to 5 hours.
• Under-sink reverse osmosis installation. Typically 2 to 4 hours.
• Repair, any brand. Typically 1 to 3 hours.

Renters, co-ops, and businesses

• Options for renters
• Co-ops and condos
• Offices and commercial sites

Local programmes

• Knocking Out Lead service line lookup. Middlesex Water publishes a lookup map of recorded service line materials and accepts customer submitted scratch test results where the record is unknown.

Nearby areas

• New Brunswick, NJ , Middlesex County
• East Brunswick, NJ , Middlesex County
• Old Bridge, NJ , Middlesex County

Sources

• Middlesex Water Company, 2024.
• Middlesex Water Company, 2025.
• Middlesex Water Company, 2025.
• Population: US Census Bureau sub-county population estimates, Vintage 2024 (POPESTIMATE2024).