32,000 Ohio residents face radioactive water threat after fracking waste reaches aquifer

Radioactive wastewater from oil and gas drilling operations is bubbling up to the surface near Marietta, Ohio, threatening the drinking water supply for 32,000 residents. State officials have declared an emergency after multiple underground injection wells failed, allowing brine containing radium and other contaminants to migrate toward the aquifer that supplies the city's tap water.

The contamination represents one of the most significant failures of the underground injection control system designed to permanently isolate fracking waste from drinking water sources. Ohio regulators are now racing to contain the plume before it reaches municipal wells.

What the State Found Underground

Ohio's Department of Natural Resources confirmed that injection wells used to dispose of fracking wastewater had failed, allowing contaminated fluid to escape the deep geological formations where it was supposed to remain permanently. The wastewater contains naturally occurring radioactive materials, primarily radium, that were brought to the surface during oil and gas extraction.

Fracking operations generate millions of gallons of wastewater that cannot be treated by conventional methods. The industry's standard disposal practice involves injecting this waste into deep underground wells, where it is meant to stay isolated from drinking water aquifers by thousands of feet of rock. When those wells fail, the contamination pathway to surface water and shallow aquifers becomes direct.

Monitoring wells near the affected sites have detected elevated levels of radioactivity and brine chemicals moving toward the aquifer system. The state has not disclosed specific radium concentrations but has characterized the threat as serious enough to warrant emergency action.

32,000 Residents on an At-Risk Aquifer

Marietta draws its municipal water supply from groundwater sources that now lie in the potential path of the migrating contamination. The city's water system serves approximately 32,000 people in Washington County, including households, schools, and medical facilities.

Radium in drinking water poses long-term health risks even at low concentrations. The EPA's maximum contaminant level for combined radium-226 and radium-228 is 5 picocuries per liter. Chronic exposure above this threshold increases the risk of bone cancer and other cancers, according to the Agency for Toxic Substances and Disease Registry.

Private well owners in the surrounding area face additional uncertainty. Unlike municipal systems, private wells have no regulatory requirement for testing or treatment, leaving individual homeowners responsible for detecting contamination that may already be present. For those concerned about heavy metals and radioactive materials in well water, testing is the only way to know what's in your water.

The State Response: Emergency Declared, Timeline Unclear

Ohio officials have declared a state of emergency for the affected area, activating additional resources for monitoring and containment. The Department of Natural Resources has shut down the failed injection wells and is working with the EPA to assess the extent of the contamination plume.

However, state officials have not announced a specific timeline for remediation or confirmed whether the contamination has already reached the municipal aquifer. Emergency declarations allow for expedited permitting and funding but do not guarantee that contamination can be reversed once it enters groundwater systems.

The operator of the failed injection wells has not been publicly identified in state communications. Ohio requires injection well operators to carry financial assurance for well failures, but the adequacy of those bonds for a contamination event of this scale remains untested.

How Radium Escapes When Ohio's Injection Wells Fail

Underground injection wells are regulated under the Safe Drinking Water Act as the primary method for disposing of hazardous fluids that cannot be safely released or treated. The system relies on geological barriers to permanently separate injected waste from underground sources of drinking water.

When wells are improperly constructed, when injection pressures exceed safe limits, or when geological assessments miss fractures and faults, those barriers can fail. Once radioactive brine enters a drinking water aquifer, remediation becomes extraordinarily difficult and expensive. Groundwater moves slowly, but contamination spreads over time and can persist for decades.

Ohio hosts more than 200 active injection wells for oil and gas waste, concentrated in the eastern portion of the state where shale drilling is most active. The state has faced previous concerns about injection-induced seismic activity but has not previously declared an emergency over aquifer contamination from well failures.

What This Means for You

If you're in Washington County or the Marietta area:

• Contact your municipal water provider to ask whether your supply has been tested for radium and brine indicators since the emergency declaration.
• If you rely on a private well, arrange for independent testing for radionuclides and total dissolved solids. Standard home test kits do not detect radioactive materials.
• Do not assume that clear, odorless water is safe. Radium contamination has no visible signs.

For general preparedness:

• Store emergency drinking water using certified containers in case of a boil-water or do-not-use advisory.

Filtration That Addresses Radionuclides in Drinking Water

Radium and other radioactive contaminants require specific filtration technologies to remove. Standard carbon filters and pitcher-style systems are not effective against radionuclides. The two treatment methods with demonstrated efficacy are reverse osmosis and ion exchange systems designed for radium removal.

Reverse osmosis systems certified to NSF/ANSI 58 can reduce radium levels by 90% or more at the point of use. For whole-house protection, ion exchange softeners configured for radium removal offer broader coverage but require regular maintenance and proper waste disposal. The best reverse osmosis systems provide documented removal rates for specific contaminants, including radionuclides.

For well owners in areas with potential radioactive contamination, point-of-entry treatment may be necessary to protect all household water uses. The best whole-house filtration systems for well water can be configured with radium-specific media, though proper sizing requires professional water analysis first.