Under New Jersey's Private Well Testing Act, every contract to sell a home that gets its drinking water from a private well on the property must make a water test a condition of the sale. In Colts Neck, the iron line on that test is close to a sure thing. NJDEP's municipal summary covers tests from September 2002 through December 2024, and it shows 83% of the 1,420 Colts Neck wells sampled went over the iron limit. If most homes "fail" the same way, what does that line tell a buyer about the house in front of them?
Very little. It says a lot about the ground under Colts Neck, though. The lines worth negotiating over are a few rows down, and they show up far less often.
The Colts Neck Report Card, Sorted by What Each Line Means
NJDEP puts iron, manganese and pH in the secondary category. Those are aesthetic, water-quality limits, not primary health-based maximum contaminant levels. The PWTA standards table sets iron at 0.3 mg/L and manganese at 0.05 mg/L, with an optimum pH range of 6.5 to 8.5. Here are the Colts Neck results from the NJDEP summary for September 2002 through December 2024, split by that classification:
| Parameter | NJDEP category | Colts Neck wells over the limit | Wells sampled |
|---|---|---|---|
| Iron | Secondary | 83% | 1,420 |
| Manganese | Secondary | 14.7% | 1,420 |
| pH | Secondary | 7% | 1,420 |
| Total coliform | Outside the secondary list | 9.6% | 1,419 |
| Fecal coliform | Outside the secondary list | 0.7% | 1,418 |
| PFOA | Outside the secondary list | 1.6% | 127 |
| PFOS | Outside the secondary list | 0.8% | 127 |
| PFNA | Outside the secondary list | 0.8% | 127 |
| Gross alpha | Outside the secondary list | 0.2% | 1,281 |
| Nitrate | Outside the secondary list | 0.1% | 1,421 |
| VOCs | Outside the secondary list | 0.3% | 1,420 |
The top three rows are the common results. The rest are rare. NJDEP's own well testing guidance says high iron is generally not considered a health concern, though it can give water an unpleasant taste and stain bathroom fixtures. The township's 2024 Environmental Resource Inventory calls iron in Colts Neck naturally occurring.
Why a Softener Doesn't Clear the Iron Line
This is where people get caught off guard. A seller may have a working treatment system in the basement and still hand over a report showing an iron exceedance. That's how the law is designed. The PWTA requires an untreated sample, so where a home has treatment, the sample has to be drawn before the water reaches the equipment.
In a house with treatment, then, the report shows the raw well water, not what the equipment delivers to the kitchen tap. In a town where more than four out of five tested wells exceed the iron limit, an iron flag is close to the default. It doesn't set one listing apart from the next. NJDEP's treatment page names the usual fixes: water softeners or oxidation and filtration for iron and manganese, and an acid neutralizer for low pH. The same page recommends maintaining a system and retesting to confirm it works. When equipment is already in place, the useful questions for a buyer are about the equipment itself: how old it is, how it's been maintained, and whether there's any post-treatment testing on file. The PWTA report won't answer any of those.
The Rows Treatment Equipment Doesn't Speak To
A softener is built for iron and manganese. The coliform and PFAS rows are a different kind of finding, and those are the ones that should drive the negotiation.
Total coliform came back above the standard in 9.6% of Colts Neck wells tested, about one in ten. That's the most common result outside the secondary group by a wide margin. Fecal coliform was much rarer at 0.7%. Under the rules, E. coli testing kicks in only when a sample is positive for total coliform.
PFAS is the row where the picture has changed. Statewide PWTA testing for PFOA, PFOS and PFNA started on December 1, 2021, so far fewer Colts Neck wells have been tested for these compounds than for iron. The township's 2024 Environmental Resource Inventory cited NJDEP data from 2023 showing no PFAS exceedances in 49 sampled wells. NJDEP's newer summary runs through December 2024 and covers 127 wells. It shows PFOA above the standard in 1.6% of them and PFOS and PFNA each in 0.8%. These rates are small, but they aren't zero anymore. Anyone repeating the older "no PFAS in Colts Neck wells" figure is working from a smaller and earlier data set.
Monmouth County also falls under the PWTA's mercury requirement. NJDEP requires mercury testing in a list of southern and shore counties that includes Monmouth. Colts Neck's mercury exceedance rate in the 2023 data was 0.1% of 1,342 wells.
What the Law Fixes and What the Contract Decides
The PWTA is a disclosure law. It doesn't set a pass/fail bar for selling a home. Here's how NJDEP lays out the PWTA:
- Every sale contract for a covered property must include a clause making the water test a condition of the sale.
- Title can't close until the buyer and seller have both received and reviewed the results and signed a certification saying so.
- The buyer and seller negotiate who pays for the test. NJDEP estimates the average cost at $1,200 to $1,500, with possible extra charges for analyzing the field blank that goes with PFAS and VOC samples.
- The law doesn't stop a sale when water fails one or more standards, and it doesn't require treatment. Whether to install treatment, and who pays for it, is up to the buyer and seller. NJDEP notes that some mortgage companies or local health departments may require treatment.
Since treatment is something the parties negotiate, how you read the report determines what you ask for. If a buyer goes after an iron exceedance in a town where 83% of tested wells show one, they're arguing about the local geology. A coliform or PFAS result is different. It's specific to that house, and it's a real basis for a credit, a repair request or a retest.
There's some help available for the cost of a fix. NJDEP points to the New Jersey Housing and Mortgage Finance Agency's Potable Water Loan Program for owners of single-family homes, which covers primary-standard exceedances and also iron and manganese. The NJDEP page also names the Spill Compensation Fund for damages caused by human-caused discharges, subject to eligibility.
This post is general information, not legal or financial advice. Confirm how these rules apply to your property and contract with your attorney and the appropriate professionals.
Timing a Test Around a Late-Fall Listing
Results don't stay valid forever. A PWTA-compliant test can be reused for one year after sampling, but total coliform results are only good for six months. Measured from this week, six months reaches back to early May 2026 and one year reaches back to early November 2025. Those two windows are the dates to raise with the lab and your attorney when an earlier test is on file.
The details of collection matter too. A certified collector or an authorized lab representative has to take the sample, and pH samples have to be collected by an employee of a lab certified for pH. When the sample comes from a tap and there's no treatment, it has to be a cold-water, non-aerated tap flushed for several minutes, depending on the size of the pressure tank.
The Local Players Changed This Year
Two changes in 2026 affect who handles a Colts Neck well file and who supplies piped water nearby.
As of October 1, 2026, Colts Neck uses the Jersey Shore Regional Health Commission for public health services, including septic and private well reviews and inspections. The township's health department page says JSRHC handles septic plan reviews and field inspections for new installations, repairs, alterations and abandonments. It directs applicants to contact JSRHC about required documents, fees and inspection scheduling. PWTA results go to the local health authority as well as NJDEP, and both have to keep the addresses of tested wells confidential.
Piped water is still the exception in Colts Neck. The 2024 Environmental Resource Inventory lists public water service only at The Grande, Colts Neck Manor, a few homes along Swimming River Road and Naval Weapons Station Earle. On July 27, 2026, New Jersey American Water announced it had completed its acquisition of Gordon's Corner Water Company, whose service area includes parts of Colts Neck, Marlboro and Manalapan. Most Colts Neck homes still get their drinking water from a well, which means most sales still go through the PWTA.
Short Answers
Can a Colts Neck sale close if the well fails? Yes. The PWTA requires both parties to receive, review and sign off on the results before closing. It doesn't block a sale over a failed standard.
Does a seller's treatment system count toward the test? No. The sample has to be untreated water drawn before any treatment equipment.
Can I look up a specific house's past results? No. NJDEP and the local health authority keep tested addresses confidential. NJDEP publishes interactive PWTA maps that summarize results by county, municipality, census block group and 2×2 mile grid.
When a Colts Neck well report lands in the middle of a contract, the lines that should shape your terms are coliform and PFAS. The iron flag is shared by most homes in town. George Pavlushkin and The ELITE Group can read PWTA results with you, coordinate test timing with your lab and attorney, and negotiate treatment credits based on what the report actually shows. Schedule a Free Consultation before your well test is ordered.
