Skip to main content

Risk Assessment of Radon in Drinking Water (1999) / Chapter Skim
Currently Skimming:

D Risks Associated with Disinfection By-products Formed by Water Chlorination Related to Trihalomethanes (THMs)
Pages 254-256

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 254...
... 1) Ingestion of Household Water with THMs General Assumptions Drinking-water intake: 0.6 L d-i Body weight: 70 kg Person drinks water at home 7 d wk-i, 52 wk y-i Exposure duration: 70 y Averaging time for carcinogenic effects: 70 y (25,550 d)
Read the entire page →
From page 255...
... once per day, 365/day Exposure duration: 70 y Averaging time for carcinogenic effects: 70 y (25,550 d) Unit Dose Factor for Cancer Risk (lifetime average)
Read the entire page →
From page 256...
... . Summary Table of Risk Estimates for THMs in Ground Water Compound Bromo Chloro- dichloro form methane Chloro dibromo- Bromo- Total methane form Risk Water 8.9 5.8 6.6 11 C on c e ntrati on a ,ug L-1 Unit Dose Factor Potencies by Route Ingestion 0.0086 0.031 0.13 0.094 0.008 Inhalation 0.019 0.019 0.13 0.094 0.004 Dermal uptake 0.0024 0.019 0.13 0.094 0.004 Total risk by chemical 6.0 x 10-6 2.3 x 10-5 1.9 x 10-5 1.7 x 10-6 4.9 x 10-5 a Data from Brass and others (1981)
Read the entire page →

Key Terms

  • dose factor
  • total risk
  • cancer risk
  • risk estimates
  • summary table

  • x udf
  • household water
  • inhalation intake
  • home assumptions
  • tables below

  • lifetime average
  • exposure routes
  • x potency
  • dermal uptake
  • udf x

  • ground water
  • averaging time
  • water compound
  • cw x
  • moderately active

  • body exposed
  • kg person
  • upper estimate
  • models bath
  • assumptions body

  • person drinks
  • drinks water
  • chloroform estimated
  • epa guidance
  • assumptions inhalation


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
    More information on Chapter Skim is available.