Well Water Testing and Disclosure: Contractor Records

In this illustrative example, a seller calls three days before closing: “Take a well sample and send a pass certificate.” The contractor has access to the house but has not checked the transaction's panel, collector qualifications or required sample point. Filling a bottle could produce a result the transaction cannot use.

Before pricing, identify what decision the test supports. A routine owner check, rental disclosure, sale requirement, lender condition and treatment verification may need different records.

Establish the program before choosing the panel

Record the property, well ID, buildings served, connections, uses and responsible operator. Ownership alone does not establish a household-well exemption: EPA explains that public water systems can be privately owned. Resolve uncertain classification with the applicable program.

Then identify the governing state, tribal or local rule, transaction contract, lender requirement or health instruction. Use a short assignment table:

Put these answers in the quote estimate and accepted service agreement. Price laboratory analysis, collection, courier, forms and any additional visit separately enough that the scope is clear.

Keep annual guidance distinct from transaction rules

CDC recommends private-well testing at least annually for total coliforms, nitrates, total dissolved solids and pH, with locally relevant additional testing and a state-certified laboratory. Repair, flooding and changed water conditions are among reasons for additional testing. That guidance does not define every sale or rental panel.

Two state examples show why local verification matters:

• New Jersey's PWTA guidance requires specified testing of untreated groundwater for covered transactions. Buyer and seller review results before closing; covered landlords test every five years and provide results to tenants. Collection requires the specified certification or authorized laboratory relationship, with additional qualifications for pH collection. Laboratories submit results to NJDEP.
• Oregon's Domestic Well Testing Act guidance describes arsenic, nitrate and total-coliform testing for covered sales or exchanges, accredited-laboratory analysis and reporting to the buyer and OHA. It allows collection by people able to follow its instructions and identifies exemptions, including irrigation-only wells and specified other sources or properties.

Check each program's current details and the transaction's additional requirements. Do not copy one state's collector rule, reporting period or sample instructions into another jurisdiction.

Assign the collector and laboratory explicitly

A plumber, inspector or treatment vendor is not automatically an authorized transaction sampler. Confirm the program permits the person's role and that the laboratory accepts the collection arrangement. Use EPA's state laboratory-certification contacts to verify the appropriate laboratory and analytical scope.

If your business only arranges testing, say so. Identify the collector of record and the separate responsibilities for access, collection, analysis, interpretation and disclosure.

Issue the approved plan on the work order. Include laboratory-supplied containers, method instructions, holding times, transport arrangements and rejection/recollection handling. Do not promise a closing-day result before confirming laboratory acceptance and turnaround.

Identify which water enters each bottle

Map the flow from well to pressure tank, treatment, distribution and drinking outlet. A raw-water sample, treated kitchen sample and method-specific plumbing-exposure sample answer different questions.

Record the exact point and photograph, cold/hot status, treatment and bypass positions, collection time, sampler, preparation and any deviation. Follow the actual method's flushing or stagnation instructions; there is no universal preparation procedure for every analyte.

Keep physical well observations in the inspection report. A laboratory result does not establish mechanical condition or sustainable yield; the well-pump documentation guide covers those separate records.

Preserve custody and deliver the complete result

Use one sample ID across labels, field notes, custody forms, laboratory receipt and final report. Record transfers, times, seals and receipt condition to the extent the method or program requires. If a sample is rejected, preserve the reason and arrange recollection. Do not relabel a point or time to rescue it.

Deliver the complete laboratory report with qualifiers, reporting limits and amendments intact. Label any contractor summary as a summary. “Not detected” is limited by the method and reporting limit; it does not establish absence of every contaminant.

Record recipients, delivery and required acknowledgments in the service report. Identify mandatory agency reporting before collection and avoid promising confidentiality that overrides it. For sale work, carry pending results into the pre-closing review.

Define concerning-result and retest responsibilities

Set primary and backup contacts before sampling. Transmit concerning findings promptly and direct interpretation and water-use advice to the responsible health or environmental authority. CDC advises considering bottled water or another safe source when results identify harmful germs or chemicals, with authority guidance on the response.

Keep repair, disinfection, confirmation and treatment separately authorized. Use the treatment proposal workflow for a measured treatment objective and verification plan. A later treated-water result may supplement a required raw transaction sample without replacing it.