Water & Land Basics

Water access affects everything from whether you can build to what the land is worth. These are the basics every land buyer should check before making an offer.

Water rights vs. water access

These are different things. Water access means there's a practical way to get water to the property — a municipal line, a well, or a nearby surface source. Water rights are the legal right to use water from a source (a stream, river, or aquifer) — and in many Western states, water rights are a separate, tradeable legal asset that may or may not transfer with the land. Never assume a property includes water rights just because water is physically present on or near it.

Two water rights systems in the U.S.

Riparian rights

Common in the Eastern U.S. Landowners adjacent to a water source generally have a right to reasonable use of it, tied to owning the adjacent land.

Prior appropriation

Common in the Western U.S. Water rights are allocated separately from land ownership, often on a "first in time, first in right" basis, and can be bought, sold, or lost through non-use.

Wells and septic systems

If a parcel isn't served by municipal water and sewer, you'll likely need a well and septic system. Before buying:

Flood zones

FEMA publishes free flood maps (Flood Insurance Rate Maps) for most of the U.S. A parcel in a high-risk flood zone (typically labeled Zone A or Zone V) may require flood insurance if you finance a home there, and may face building restrictions. Always check the specific parcel — flood zones can vary within a few hundred feet.

Soil and topography

Soil type affects everything from septic viability to what will grow on agricultural land. The USDA's free Web Soil Survey tool lets you look up soil classification for any parcel in the U.S., including drainage characteristics and agricultural suitability ratings.

Before you buy: pull the FEMA flood map, the USDA soil survey, and ask directly about perc tests and water rights. All three are typically free to check and can significantly change what a parcel is actually worth to you.