Environmental Intelligence

Guides & Articles

Plain-English guides to federal environmental data — so you know what you're looking at before you sign anything.

Featured

Flood RiskJune 2026 · 8 min read

Flood Zone X Explained: What It Means, Shaded vs Unshaded, and Whether You Need Flood Insurance

Zone X is the good news on a FEMA map — mostly. What shaded vs unshaded X means, why a quarter of flood claims come from low-risk zones, and whether Zone X flood insurance is worth pricing.

Read article →

All articles

Due Diligence7 min read

What Environmental Risks Should You Check Before Buying a House?

A practical checklist for checking flood risk, air quality, drinking water, nearby industrial sites, and public environmental records before you make an offer.

Read →

Pollution6 min read

Is It Safe to Buy a House Near a Superfund Site?

The word 'Superfund' sounds alarming, but proximity doesn't automatically mean risk. Here's what the designation actually means, how to look one up, and what questions to ask.

Read →

Flood Risk7 min read

FEMA Flood Zones Explained for Homebuyers: Zone X, AE, A, and VE

Zone AE, Zone X, Special Flood Hazard Area — the federal flood map uses terminology designed for engineers, not families. This guide translates the common labels into plain English.

Read →

Drinking Water6 min read

How to Check Drinking Water Quality Before Buying a Home

Public water records, private wells, lead service lines, and health-based violations all mean different things. Here's what to check before closing.

Read →

Forever Chemicals9 min read

PFAS in Drinking Water: What Every Homebuyer Should Know About Forever Chemicals

176 million Americans have drinking water that has tested positive for PFAS. Here's what the science says, what federal limits mean, and what to check before you buy.

Read →

Air Quality6 min read

What Is a Good Air Quality Score When Moving to a New City?

AQI can change by season, wildfire smoke, ozone, highways, and local industry. Here's how relocators should read the signal before picking a neighborhood.

Read →

Due Diligence6 min read

Environmental Red Flags That Do Not Show Up in a Home Inspection

A home inspector checks the house. Public environmental records can reveal context around flood exposure, water systems, air quality, and nearby pollution.

Read →

Relocation7 min read

How to Research a Neighborhood Before Moving Out of State

Remote buyers need more than listing photos. This checklist covers environmental risk, flood zones, water quality, air quality, and local tradeoffs.

Read →

Buyer Confidence7 min read

When Environmental Data Makes a Home Feel Risky, Here Is How to Think About It

A human guide for separating real risk from understandable anxiety when flood, air, water, or pollution records show up near a home you like.

Read →

Buyer Psychology9 min read

Most Buyers Research the Neighborhood After Falling for the House. Here's Why That's Backwards.

Confirmation bias, the endowment effect, and motivated reasoning all activate the moment you walk through a front door. Behavioral science explains why the environmental check has to come first.

Read →

Forever Chemicals8 min read

Does Living Near a Military Base Affect Your Drinking Water?

Over 700 U.S. military installations have confirmed or suspected PFAS contamination from firefighting foam. Here's what to check if you're buying near a base — and what it means for wells and municipal water.

Read →

Forever Chemicals7 min read

How to Check for PFAS Near My Address (Free + Paid Tools)

EPA's PFAS data lives in five different datasets and none are organized by street address. Here's how to actually check PFAS near a home — free first, then when the $19.99 address report is worth it.

Read →

Professional Assessments9 min read

Phase 1 Environmental Site Assessment Cost (2026): What You'll Pay and What's Actually Included

Your lender says you need a Phase I ESA and nobody will tell you the price. Real cost ranges, what the money buys, Phase 1 vs Phase 2, and the questions to ask before signing with a consultant.

Read →

Forever Chemicals8 min read

PFAS Contamination Maps: How to Check If PFAS Is in Your Water

The national PFAS maps are real — and almost useless for your specific tap. Which maps to trust, why zip-code lookups mislead, and how to find what your actual water system reported.

Read →

Lead Safety9 min read

How to Check a House for Lead Paint: Year-Built Rule, Test Kits, and When to Pay for an Inspection

Chipping paint in a pre-1978 house and a kid who touches everything? The calm triage sequence: the year-built rule, what $10 swab kits can and can't tell you, and when an XRF inspection is worth it.

Read →

Check any U.S. address in 30 seconds

Use the same federal databases these articles explain. Air quality, flood risk, drinking water, and Superfund sites — graded A–F, explained in plain English.

Get a Report