# COMAR Title 26 — Department of the Environment

## Subtitle 13 — Disposal of Controlled Hazardous Substances

### Chapter 05 — Standards for Owners and Operators of Hazardous Waste Treatment, Storage, and Disposal Facilities

#### Regulation .22 EPA Interim Primary Drinking Water Standards.

*COMAR 26.13.05.22*

Parameter
            Maximum Level (milligrams/liter)
          
        
        
          
            Arsenic
            0.05
          
          
            Barium
            1.0
          
          
            Cadmium
            0.01
          
          
            Chromium
            0.05
          
          
            Fluoride
            1.4 - 2.4
          
          
            Lead
            0.05
          
          
            Mercury
            0.002
          
          
            Nitrate (as N)
            10
          
          
            Selenium
            0.01
          
          
            Silver
            0.05
          
          
            Endrin
            0.0002
          
          
            Lindane
            0.004
          
          
            Methoxychlor
            0.1
          
          
            Toxaphene
            0.005
          
          
            2,4-D
            0.1
          
          
            2,4,5-TP Silvex
            0.01Maximum Level
          
          
            Radium
            5 pCi/liter
          
          
            Gross Alpha
            15 pCi/liter
          
          
            Gross Beta
            4 millirem/yr
          
          
            Turbidity
            1/TU
          
          
            Coliform Bacteria
            1/100 milliliter

(Comment: Turbidity is applicable only to surface water supplies.)