EPAFinal Rule

National Primary Drinking Water Regulations; Radionuclides [W-00-12-II-A-1]

EnvironmentHealthcare

Summary

This EPA regulation sets safety limits for radioactive substances (like uranium and radium) that can be found in drinking water supplies. Water utilities must test for these radioactive materials and treat water if levels are too high to protect people's health.

Key Points

  • 1Water suppliers must regularly test drinking water for radioactive elements that can cause health problems like cancer and bone disease
  • 2If radioactive materials exceed safe limits, water utilities must remove them or inform the public and take corrective action
  • 3The regulation applies to all public water systems that serve communities, protecting millions of Americans from contaminated drinking water
  • 4Water companies have specific deadlines to comply with testing and treatment requirements
  • 5This rule updates previous standards to better protect against long-term exposure to low levels of radiation in tap water

Impact Assessment

If you are a water utility operator, this means you must test drinking water supplies for radioactive materials and implement treatment systems if contamination exceeds safe levels, requiring capital investment and ongoing monitoring.

Impact Level
Significant
Geographic Scope

National

Compliance Cost

Significant

Who is Affected
State GovernmentsConsumersHomeownersManufacturers

Key Dates

Published

April 17, 2025

Regulatory Connections

Amends CFR Sections
40 CFR Part 141
Other Documents in This Rulemaking (EPA-HQ-OW-2004-0040)

This summary is for informational purposes only. It may not capture all nuances of the regulation. Always refer to the official text for authoritative information.