Asbestos is a fibrous mineral occurring in natural deposits. Because asbestos fibers are resistant to heat and most chemicals, they have been mined for use in more than 3,000 products, including roofing materials, brake pads, and cement pipe often used in distributing water to communities.

Stacey Herreid

Rule Manager

P: 701-328-5287


  • Who must comply with the asbestos monitoring requirements?
    • Community water systems and non-transient non-community water systems must comply with the asbestos monitoring requirements.
  • What is the maximum contaminant level (MCL) for asbestos?
    • 7 Million Fibers/Liter (MFL) – (longer than 10 micrometers)
  • How does asbestos get into my drinking water?
    • Asbestos may occur naturally in the source water through erosion, runoff, and improper disposal of asbestos containing wastes; and in the distribution system through the deterioration of asbestos-cement pipes due to the corrosivity of the finished water and source water conditions.
  • What is North Dakota’s asbestos waiver concept?
    • A public water system may be granted an asbestos waiver from sampling for asbestos based on consideration of:
      • Potential asbestos contamination of the water source
      • The use of asbestos-cement pipe for finished water distribution
      • The corrosive nature of the water
    • A new waiver is required in the first compliance period of each nine year compliance cycle. No sampling is required when granted a waiver.