Government sampling in Richmond County’s aquifer 211MDVL found Radon-222 detected in all 23 tests from 10 wells, with concentrations ranging from 27.0 to 253.0 picocuries per liter (pCi/L). These samples, taken between 2013 and 2025 at depths of 200 to 455 feet, showed no values above federal health-based limits.

What to Record Before Requesting Treatment Advice

Know Your Household Water Usage

Write down your average daily water use in gallons to help match treatment capacity to demand.

Obtain a Current Radon Measurement for Your Water

Test your own water to determine the actual Radon-222 concentration present, as area data do not specify individual well conditions.

Identify Water Source and Depth

Note whether your water comes from a private well drawing from the 211MDVL aquifer and the depth of that well, since Radon levels vary with well characteristics.

How to Judge Treatment Capacity Against Daily Water Demand

Match Filter Flow Rate to Household Needs

The treatment system must handle your household’s peak water use to ensure effective radon removal without reducing water pressure.

Consider System Capacity for Continuous Use

Radon removal systems vary in how quickly they process water; choose one that suits your typical daily consumption patterns.

Plan for Potential Changes in Water Use

Account for seasonal fluctuations or future household size changes that might increase water demand.

Distinguishing Radon from Other Similar Water Quality Issues

Radon Versus Other Radioactive Elements

Radon is a gas formed from radium decay, unlike solids such as uranium or radium itself; treatment methods differ accordingly.

Radon Versus Common Taste or Odor Complaints

Radon is odorless and tasteless, so water taste or smell issues likely have different causes.

Radon Versus Sediment and Turbidity

Cloudiness or particles in water are separate issues that require different filters than those targeting radon gas.

Understanding Aesthetic Secondary Standards Versus Health-Based Limits for Radon

Federal Health-Based Limits Guide Safety Assessments

Federal regulations set thresholds to protect health; none of the Richmond County samples exceeded these limits.

Secondary Standards Address Taste and Appearance

Standards affecting water taste or staining do not apply to radon, as it is odorless, colorless, and tasteless.

Area Data Reflect Sampling, Not Individual Well Safety

Area measurements show typical levels but do not indicate whether any individual well water is above or below regulatory guidelines.

Household Symptoms That May and May Not Indicate Radon in Water

Radon Causes No Taste or Odor Changes

If your water tastes or smells unusual, radon is unlikely to be the cause.

Health Symptoms Cannot Be Diagnosed Through Water Quality Alone

Any health concerns related to radon should be evaluated separately by a qualified professional.

Radon Exposure Is Primarily a Concern Through Airborne Entry

Waterborne radon can contribute to indoor air radon levels during household water use, but the presence in water itself has no immediate sensory effects.

Do not conclude from the Richmond County area data alone that your well water has safe or unsafe radon levels; only a direct water test can determine your household’s specific condition.

The C-Series Radon in Water Filter ships ready to configure and provides an effective way to reduce radon concentrations in household water based on your test results and demand requirements.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2025-07-10. These figures describe groundwater sampled in this area. They are not a test of any individual private well - only a test of that well can establish its own water.

On record: U.S. Geological Survey sampling of Radon-222 in the 211MDVL aquifer (Richmond County): 23 results from 10 wells, median 201.0 pCi/L, range 27.0-253.0 pCi/L; none above any federal threshold