Corrections and Updates

How to report an error

If you think something on a WaterTestAtlas page is wrong, such as a benchmark, a lab detail, a price or a source, contact us through our contact page. Tell us which page you mean, what you think is wrong and, if you can, the source that shows the correct information. A link to an agency page, a regulation or a lab's own price list helps us check it quickly.

We check every report against primary sources. When an error is confirmed, we fix the page, record the fix here with its date, and the corrected page goes back to a reviewer for approval. If the report turns out not to be an error, the page stays as it is.

Log

This log lists corrections to published pages and changes to the regulatory benchmarks our pages rely on, newest first. Each entry gives the date, the page or benchmark affected and what changed.

October 12, 2026: log started. No corrections yet.

Our editorial policy explains how pages are sourced and reviewed, and what happens to a page when a benchmark it relies on changes.

What we watch

Two sets of drinking water rules have been changing, so we check their status every month and update the benchmarks our pages use when they change. Each status below is stated as of the date of the source we checked.

Lead. EPA issued a final rule, the Lead and Copper Rule Improvements (LCRI), that requires drinking water systems across the country to identify and replace lead pipes within 10 years^[1]. According to EPA's LCRI page, the rule also requires more rigorous testing of drinking water and sets a lower threshold for communities to take action. EPA's LCRI page was last updated on December 29, 2025, when we checked it on October 12, 2026. The lead benchmarks our pages use, with their status as of our last check, are:

PFAS. On April 10, 2024^[2], EPA announced a final National Primary Drinking Water Regulation for six^[2] PFAS. On May 18, 2026^[2], EPA announced two proposed rules for public comment:

• One would keep the regulation for PFOA and PFOS, and give drinking water systems the option to request two additional years^[2], to 2031^[2], to comply with the enforceable limits.
• The other would rescind the drinking water regulations for PFHxS, PFNA, HFPO-DA (commonly known as GenX) and the Hazard Index mixture of these three PFAS plus PFBS.

These are proposals, not final rules. Until EPA finalizes a change, our benchmarks keep the 2024 rule's values, marked as subject to a proposed revision, and we will record any final change in the log above. EPA's PFAS page was last updated on May 18, 2026, when we checked it on October 12, 2026.

These rules apply to public water systems. If your water comes from a private well, they are reference points for your results, not requirements for you.