Is Marlboro, NJ tap water safe?

Data: U.S. EPA · How we read the data · How we check it

No federal limits exceeded in EPA data for Marlboro Township Water Utility Division. 3 PFAS were detected below the limits.

2 public water systems serve parts of Marlboro. The largest, Marlboro Township Water Utility Division, serves 29,480 people, and one system here had PFAS above a federal limit. Your water bill names your system.

Largest system

Marlboro Township Water Utility Division

29,480 people · Purchased surface water · EPA ID NJ1328002

Buys treated water from Middlesex Water Company.

PFAS	Highest average	Limit	Status
PFOA One sample above limit	1.63 ppt	4 ppt	One sample above limit
PFOS Not detected	–	4 ppt	Not detected
PFHxS Not detected	–	10 ppt	Not detected
PFNA Not detected	–	10 ppt	Not detected
HFPO-DA (GenX) Not detected	–	10 ppt	Not detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

Lead: 1 ppb at the 90th percentile (Dec 2025, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 2

Across New Jersey, 110 of 245 water systems EPA tested had PFAS above a 2024 federal limit, and 4 systems were above the lead action level in results from the last five years. New Jersey results.

Marlboro homes and lead pipes

31%

of homes built before 1980 (New Jersey 63%, US 50%)

built before 1950 (New Jersey 24%)

of households rent (New Jersey 36%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for Marlboro township (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Marlboro

Matawan Borough Water Department
9,084 people · Purchased surface water · New Jersey · lists this city
PFOA above limitAlso: 1 health-based violation since 2016

How nearby cities compare

City	Main water system	PFAS	Lead (90th pct.)
Old Bridge 5 mi Old Bridge Municipal Utilities Authority	Old Bridge Municipal Utilities Authority	None above limits	1.75 ppb
Manalapan 6 mi Gordons Corner Water Company	Gordons Corner Water Company	Above limit	0.7 ppb
Freehold 8 mi New Jersey American Water – Coastal North	New Jersey American Water – Coastal North	Above limit	2 ppb
Monroe 9 mi Monroe Township Utility Department	Monroe Township Utility Department	Above limit	1.34 ppb
Sayreville 9 mi Sayreville Water Dept	Sayreville Water Dept	Above limit	0.54 ppb
East Brunswick 10 mi East Brunswick Water Utility	East Brunswick Water Utility	None above limits	0.4 ppb

Marlboro ZIP codes (2)

07746
07751

Questions

Is Marlboro tap water safe to drink?

Marlboro Township Water Utility Division had 2 health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Marlboro, NJ?

2 public water systems serve parts of Marlboro. The largest is Marlboro Township Water Utility Division (29,480 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Marlboro tap water have PFAS?

Marlboro Township Water Utility Division had 3 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Marlboro homes have lead pipes?

Census estimates put 31% of Marlboro homes as built before 1980 (New Jersey: 63%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Marlboro Township Water Utility Division's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.