Westampton, NJ tap water quality

PFAS compliance results for New Jersey American Water's Mount Holly system in 2025 were below both New Jersey and federal limits.

Westampton is in Burlington County and has about 9,436 residents. About 74% of Westampton residents live inside the service area of New Jersey American Water's Mount Holly system, according to New Jersey DEP's map of public water service areas and 2020 Census population. The results on this page are for that system. About 26% live inside the service area of the Willingboro Municipal Utilities Authority, which publishes its own water quality report.

Hardness and lead in Westampton's water

Hardness

119 mg/L7 grains per gallon, moderately hardThe utility's report lists an average of 119 mg/L at the treatment plant (2023).New Jersey's recommended upper limit 250 mg/L (for taste and appearance; not enforceable); no federal limit.

Lead, 90th percentile of home taps

3 ppbAction level: 15 ppb, dropping to 10 ppb in November 2027

7 grains per gallon in the Mount Holly system's report: size a water softener for Westampton. Compare it with hardness in other New Jersey water systems.

Filtering Westampton's tap water at home

The utility's PFAS compliance results were below the federal limits. If you still want a filter, or you're concerned about lead from your home's pipes, look for one certified to NSF/ANSI Standard 53 for the contaminant you care about.

Where does Westampton's water come from?

The Mount Holly system's 2025 report lists its own sources as 9 wells in the Potomac-Raritan-Magothy Aquifer (PRM) and surface water from the Delaware River (Delaware River Regional Water Treatment Plant).

The Mount Holly system is run by New Jersey American Water. Its customer service page covers paying a bill and starting or stopping service.

Local factors in Westampton

Age of homes

29% (margin of error ±7 percentage points) of homes in Westampton were built before 1980 (Burlington County: 55%, New Jersey: 63%; U.S. Census ACS 2020-2024). The utility's water quality report describes water leaving the system, not the plumbing inside a home; why the build year matters for lead.

Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates, table B25034 (Year Structure Built).

Lead service lines

New Jersey American Water's service line map, where you can look up your own address, lists 2,234 service lines (the pipes from the water main to each building) in the part of Westampton it serves on October 31, 2026. 3 of them (under 1%) have lead on the utility's side, the property owner's side or both (0 only on the utility's side, 3 only on the owner's side), and New Jersey's 2021 lead service line law requires the utility to replace them, including the part on private property. For 383, the material on at least one side hasn't been identified yet (how we count service lines; all towns compared).

Source: New Jersey American Water, service line material map, lines counted inside the town boundary on October 31, 2026; New Jersey Board of Public Utilities, 2022 order quoting the 2021 lead service line law (N.J.S.A. 58:12A-40).

Radon

NJDEP places Westampton in Radon Tier 2 (moderate potential: 5 to 24 percent of tested homes at or above 4 picocuries per liter) based on indoor radon tests (2015). In that report, 13% of the 588 homes tested in Westampton were at or above 4 picocuries per liter. NJDEP recommends testing every home regardless of tier. How radon tiers work.

Source: New Jersey DEP Radon Section, 2015 Radon Tier Assignment Report; the same figures appear in NJDEP's current municipal tier list.

Known contaminated sites

NJDEP lists 10 sites in Westampton where soil or groundwater contamination has been confirmed (October 14, 2026). These are places under cleanup oversight; they do not mean that tap water from the public system is contaminated. The public water system is tested and treated separately.

Source: New Jersey DEP, Known Contaminated Sites List map layer, retrieved October 16, 2026, with site-by-site lists in NJDEP's Known Contaminated Sites reports.

Water and sewer bills

In the Census Bureau's survey (ACS 2020-2024, about this question), 85% (margin of error ±5 percentage points) of occupied homes in Westampton pay a separate charge for water and sewer; the rest report no charge or a charge included in other fees, such as rent. Among the homes that pay, 41% (margin of error ±7 percentage points) report $1,000 or more for the year (29% in Burlington County, 30% statewide), as households report it rather than as the utility bills it.

Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates, table B25134 (Annual Water and Sewer Costs).

ZIP codes covering Westampton: 08060 (shared with Eastampton, Mount Holly, Springfield Township), 08073. Source: U.S. Census Bureau 2020 ZIP Code Tabulation Areas.