NJ Clean Stream
njcleanstream.org
Buying or selling a home with a private well in NJ? Here’s what the law requires — and what it misses
New Jersey’s Private Well Testing Act of 2002 was a meaningful step forward for private well owners. But twenty-plus years later, it has proven significantly limited. The law’s structure — triggered only by real estate transactions, covering only a defined contaminant panel, administered inconsistently, and lacking meaningful enforcement — leaves large gaps in the protection it was designed to provide.
What the Private Well Testing Act requires
The Act applies to any real estate transaction — both sales and long-term rentals — involving property served by a private well. When a property is sold, the seller must test the well water and provide results to the buyer before closing. For rental agreements longer than one year, the landlord must test and provide results to the tenant. Testing must use a NJ DEP-certified laboratory. The required panel includes bacteria (total coliform and E. coli), nitrates, pH, and a suite of inorganic and organic chemicals.
County boards of health can add county-specific contaminants to the required panel based on local contamination concerns. This provision has created significant variation — some counties have proactively added arsenic, PFAS, and VOCs; others have not expanded beyond state minimums.
Gap 1: Testing only at transactions leaves long-term residents unprotected
The most fundamental limitation is that the law is transaction-triggered. A family that has lived in the same home on a private well for 10, 20, or 30 years has no statutory obligation to test their well and no regulatory mechanism compelling them to do so.
This gap is particularly significant for contamination that develops or worsens over time. A well that tested clean when a family moved in 20 years ago may have deteriorating water quality today due to agricultural expansion, new contamination from a nearby industrial source, a declining water table drawing from a different aquifer zone, or aging well structure allowing surface water infiltration. None of these changes would trigger a testing requirement.
The people most heavily exposed — long-term residents who have been drinking potentially contaminated water for years — are precisely those the law fails to reach.
What NJ Clean Stream is pushing for: Mandatory periodic testing of all private wells on a fixed schedule — not more than every five years — with results reported to the county board of health and accessible through a public database.
Gap 2: The standard testing panel excludes critical emerging contaminants
The contaminant panel required under the Act does not currently include PFAS or 1,4-dioxane — two of the most significant groundwater contamination concerns in New Jersey. A buyer purchasing a home near Joint Base McGuire-Dix-Lakehurst would receive well testing results that do not include PFAS. The buyer would have no way of knowing from the transaction testing whether their well is contaminated with the contaminant most likely to be a problem in their specific location.
This is not an abstract risk. Communities surrounding military installations in Burlington and Ocean counties have documented PFAS contamination affecting both public and private water supplies. Private well users in these communities deserve transaction testing that actually tests for the relevant contaminant.
What NJ Clean Stream is pushing for: Mandatory inclusion of PFAS (EPA Method 533 or 537.1) and 1,4-dioxane (EPA Method 522) in the standard statewide transaction testing panel. Location-specific contaminants — arsenic in high-arsenic geological areas, VOCs near industrial sites, pesticides in agricultural areas — mandated in county-specific panels based on regularly updated NJ DEP guidance.
Gap 3: County variation creates a patchwork of protection
The delegation of authority to county boards of health has created dramatically uneven protection. A buyer in a county that has proactively added arsenic, PFAS, and VOCs receives substantially more comprehensive protection than a buyer in a county that has added nothing to state minimums. Most buyers assume the required testing is comprehensive and consistent statewide. It is neither.
What NJ Clean Stream is pushing for: A state-level coordinating mechanism at the NJ DEP that develops and regularly updates recommended county-specific panel additions based on current groundwater quality data, contamination site information, and geological characterization — giving county boards of health a clear state-developed framework rather than requiring independent action with variable resources.
Gap 4: Disclosure is required — but not remediation
The Act requires disclosure of test results but does not require remediation when contamination is found. A seller who receives results showing arsenic at 25 ppb must disclose those results to the buyer — but is not required to install treatment, remediate the source, or take any other action to provide clean water to the new occupants.
This places the full burden of responding to disclosed contamination on the buyer — who must decide whether to proceed with the transaction, negotiate a price reduction or remediation credit, or walk away. In competitive real estate markets, buyers may be under pressure to proceed despite contamination findings. Buyers without technical knowledge may not understand that a disclosed arsenic level of 12 ppb represents a significant long-term cancer risk. First-time homebuyers may not have the leverage to demand remediation or the financial flexibility to walk away.
Disclosed contamination does not necessarily become remediated contamination. Homes with known well water problems continue to be sold without treatment, with buyers taking on the cost and health risk — often without fully understanding what they have accepted.
What NJ Clean Stream is pushing for: A requirement that any well with results exceeding NJ DEP health-based action levels be remediated — through treatment installation or source remediation — as a condition of real estate closing. For rental properties, landlord-installed treatment before a contaminated well can supply drinking water to tenants.
Gap 5: Radon is excluded from the required testing panel
Radon is a significant health risk for private well users in New Jersey’s Highlands region and other high-radon geological areas — but it is not included in the standard Act testing panel. Buyers of homes in radon-prone geological areas receive well testing results that do not include radon concentrations. The cost of radon testing — approximately $25–$50 — is modest relative to the public health significance of the information.
What NJ Clean Stream is pushing for: Mandatory radon testing for all real estate transaction well tests in counties with documented elevated radon geology — Morris, Passaic, Bergen, Warren, Sussex, Hunterdon, and Somerset counties. Add radon to the state-required panel for these counties immediately.
Gap 6: Enforcement is inconsistent
The Act has enforcement provisions, but closings sometimes proceed without completed well testing. Test results are not always disclosed in timely fashion. County boards of health responsible for enforcement have variable resources across the state’s 21 counties. Some actively enforce requirements; others have limited capacity to do so.
What NJ Clean Stream is pushing for: A state-level enforcement authority and mandatory reporting system in which certified laboratories report results directly to the NJ DEP, creating an independent compliance record. Closing attorneys required to certify that testing has been completed and results disclosed. Meaningful penalties for non-compliance relative to the value of the real estate transaction.
Gap 7: No assistance for well owners who cannot afford remediation
When contamination is found through transaction or voluntary testing, the cost of remediation falls entirely on the property owner. A comprehensive treatment system may cost $5,000–$20,000 for installation. For existing homeowners — particularly lower-income rural residents — discovering contamination through voluntary testing, there is almost no state financial assistance available. New Jersey does not have a dedicated private well remediation assistance program comparable to those in some other states.
What NJ Clean Stream is pushing for: A New Jersey Private Well Remediation Assistance Fund, funded by state general obligation bonds and cost recovery from responsible parties at contaminated sites, providing grants and low-interest loans to private well owners for treatment installation and well rehabilitation. Full grants available to low-income households; sliding-scale assistance for moderate-income households.
What to do right now if you own or are buying a private well home
- Test your water comprehensively this year. Use a NJ DEP-certified laboratory. Include PFAS and 1,4-dioxane if you are near a military installation, industrial site, or dry cleaning cluster.
- If buying a home, do not assume the transaction testing panel covers all relevant contaminants. Ask what is included and add location-specific contaminants. Negotiate remediation as a condition of closing, not a price concession to address later.
- If selling a home and transaction testing reveals contamination, consider addressing it proactively. A well with installed, functioning treatment is more attractive to buyers than a disclosed problem without remediation.
- Report contamination to the county board of health. Private well contamination data — even from voluntary tests — provides valuable information for characterizing groundwater quality in your area and identifying patterns that may affect your neighbors.
- Contact NJ Clean Stream to stay informed about legislative efforts to strengthen the Private Well Testing Act and to add your voice to the advocacy for stronger private well protection in New Jersey.
This is Article 3 of 3 in NJ Clean Stream’s Private Well Contamination Series. Article 1 describes the scope of private well use in NJ and the regulatory vacuum. Article 2 provides a practical contaminant guide for private well owners.