Well water test when selling a house in New Jersey
1 statewide rule and 0 local rules from official sources.
General information, not legal advice. This is our summary of the official rule as we read it. The ordinance or code and the health department decide: confirm with them before you list, sign or close.
Statewide: well water test at sale
Property whose drinking water comes from a private well on the property, or from a well with fewer than 15 connections or serving fewer than 25 people.
| Question | What the official text says |
|---|---|
| What is required | Contract of sale must make a lab test of the well water a condition of sale; closing cannot occur until buyer and seller have both received and reviewed the results, and both certify this in writing at closing Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
| Triggered by | sale of property whose potable water is a private well (including new construction) or a small well with under 15 connections Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
| Deadline | before closing of title; test is a condition of the sale Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
| Who arranges it | not fixed by statute: the contract provision requires testing; sample collected by a certified sampler or lab representative Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
| How long a report is valid | Each parameter has a maximum validity period set by NJDEP rule; no retest needed if the sale contract is signed within it Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
| Exemptions |
Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
| Fee | NJDEP estimates average test price $1,200-$1,500 (2025 fee schedule) Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
| If the system fails | The certified lab sends the results to NJDEP, and NJDEP notifies the local health authority. A failed test does not stop the sale; any treatment is for buyer and seller to agree Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
| Well part | Total coliform (E. coli if positive), nitrates, pH, iron, manganese, lead, arsenic, gross alpha, PFOA/PFOS/PFNA, VOCs, synthetic organics, plus mercury (southern counties) and uranium (northern counties); tests by NJDEP-certified lab Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
| Who may inspect | NJDEP Office of Quality Assurance (certified drinking water labs). official page (dep.nj.gov) Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
| Official forms | web.archive.org Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
| In force since | September 14, 2002 Source: web.archive.org via wayback 2024/2025 capture of the same official URL |
Checked on November 9, 2026: read in a web-archive copy of the official page (the live site was blocked from our connection).
Published costs in New Jersey
Fee items from official fee schedules and guides, with the year each applies to. They are different items (acceptance fees, inspections, escrow), so we list them rather than average them.
| Jurisdiction | Item | Amount | Year | Source |
|---|---|---|---|---|
| Statewide (NJDEP) | Private Well Testing Act lab test (average) | $1,200-$1,500 | 2025 | web.archive.org |
How the neighbouring states compare
New Jersey has a statewide rule. Of its 3 neighbouring states, 1 has a statewide rule at sale; a buyer moving across the line may meet a different rule. From our register of official rules:
- Delaware: statewide septic system rule at sale.
- New York: no statewide rule; 5 local rules (counties, cities or townships).
Other states: all states.