NJ Private Well Testing Act Overview
The Private Well Testing Act (PWTA) generally requires certified water testing as part of covered New Jersey real-estate sales and leases of private-well properties.
Short answer: If you're buying, selling, or renting a home on a private well, PWTA sampling by a certified lab or collector is generally required, usually before treatment, with results reported to specified parties and NJDEP. This page explains the process; it is not legal or transaction advice.
Who this is for: buyers, sellers, landlords, tenants, and real-estate professionals involved in a New Jersey transaction for a private-well property.
What the PWTA covers
- Covered real-estate sales of properties served by a private well
- Covered residential leases of properties served by a private well, generally on a recurring cycle — verify the current interval and any exceptions before relying on a fixed number
How PWTA sampling works
- A certified laboratory or appropriately certified collector performs sampling — not the buyer, seller, or landlord.
- Samples are generally collected before any treatment system, so the raw water quality is what's reported.
- The lab analyzes for the required PWTA analyte list under current NJDEP rules.
- Results are reported to the required parties and to NJDEP under the program.
- Always check current NJDEP analyte and procedural requirements rather than relying on an old checklist — the required list can change.
What this site will not do
- Tell a seller or landlord to self-collect a PWTA sample
- Tell you to bypass a certified lab
- Advise on contract rescission, disclosure liability, escrow, or closing decisions
Official sources
- NJDEP Private Well Testing Act program
- NJDEP certified laboratory directory
Related
Who pays for PWTA testing?
Payment arrangements are typically negotiated between the parties to the transaction. This is a contract question — consult your real-estate attorney or agent.
Can I skip PWTA testing if the well was tested recently?
Whether a prior test satisfies a current transaction requirement depends on current NJDEP rules and timing. Confirm with a certified lab or your attorney before assuming an older test is sufficient.
This page provides general educational information and is not legal, contract, or closing advice. Verify current PWTA analytes and procedures with NJDEP before relying on this content.
Last reviewed: 2026-07-11. Report a correction.