Transparency Matters to Us

PurityMap is a data-driven, independent water quality research platform. In the interest of full transparency, this page explains how our site is funded and how affiliate links work.

Some links on PurityMap are affiliate links. This means that if you click a link and make a purchase, we may earn a commission at no additional cost to you.

Our core reporting methodology is documented here: Methodology & Data Sources.

What Affiliate Links Do and Do Not Mean

Affiliate relationships do not affect:

• Water quality data
• Purity Scores
• Contaminant reporting
• Health context and explanations
• Which products qualify for recommendation

All analysis and scoring are completed before any product is considered.

If a filtration system does not meet relevant certification or performance criteria for a contaminant, it is not recommended, regardless of commission potential.

Why We Use Affiliate Links

Operating and maintaining a nationwide, data-driven platform requires resources. Affiliate commissions help support the ongoing work needed to keep PurityMap accurate, up to date, and freely accessible.

Affiliate revenue may help fund:

• Data analysis and updates
• Ongoing research and reporting
• Website infrastructure and security
• Free public access to local water quality reports

This model helps us avoid charging users for access to basic water quality information.

You can browse reports here: City Water Quality Reports.

Product Selection Standards

We only reference filtration products that meet clear quality and relevance standards. When possible, we prioritize products that are backed by recognized third-party certifications and transparent documentation.

We only reference filtration products that:

• Are certified by recognized third-party standards where applicable
• Clearly document contaminant reduction capabilities
• Are appropriate for the scale of the water issue (whole-house vs point-of-use)

We do not recommend:

• One-size-fits-all solutions
• Products without credible certification or documentation
• Systems that do not address the contaminants identified in local data

To understand common contaminants and how they are evaluated, visit the Water Contaminant Encyclopedia.

For general certification information, see: https://www.nsf.org.

Third-Party Websites

When you click an affiliate link, you may be redirected to a third-party website (such as Amazon or a filtration brand).

Those sites:

• Have their own privacy policies and terms
• Control pricing, availability, and fulfillment
• Are not operated or controlled by PurityMap

Our Commitment

PurityMap exists to provide clear, responsible, data-grounded information, not sales pressure.

Affiliate revenue never overrides:

• Scientific accuracy
• Transparency
• User trust

If you have questions about our affiliate relationships, you may contact us at:

Email: contact@puritymap.com

You may also reach us through our contact page: Contact Us.