tapwater: Total Trihalomethanes in Tapwater
In statsr: Companion Software for the Coursera Statistics with R Specialization
Description
Usage
Format
Source
Description
Trihalomethanes are formed as a by-product predominantly when chlorine is used to disinfect water
for drinking. They result from the reaction of chlorine or bromine with
organic matter present in the water being treated.
THMs have been associated through epidemiological studies
with some adverse health effects and many are considered carcinogenic.
In the United States, the EPA limits
the total concentration of the four chief constituents (chloroform, bromoform, bromodichloromethane, and dibromochloromethane), referred to as
total trihalomethanes (TTHM), to 80 parts per billion in treated water.
Usage
1
Format
A dataframe with 28 rows and 6 variables:
- date
Date of collection
- tthm
average total trihalomethanes in ppb
- samples
number of samples
- nondetects
number of samples where tthm not detected (0)
- min
min tthm in ppb in samples
- max
max tthm in ppb in samples
Source
National Drinking Water Database for Durham, NC. https://www.ewg.org
statsr documentation built on Jan. 23, 2021, 1:05 a.m.
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Description Usage Format Source
Description
Trihalomethanes are formed as a by-product predominantly when chlorine is used to disinfect water for drinking. They result from the reaction of chlorine or bromine with organic matter present in the water being treated. THMs have been associated through epidemiological studies with some adverse health effects and many are considered carcinogenic. In the United States, the EPA limits the total concentration of the four chief constituents (chloroform, bromoform, bromodichloromethane, and dibromochloromethane), referred to as total trihalomethanes (TTHM), to 80 parts per billion in treated water.
Usage
1 |
Format
A dataframe with 28 rows and 6 variables:
- date
Date of collection
- tthm
average total trihalomethanes in ppb
- samples
number of samples
- nondetects
number of samples where tthm not detected (0)
- min
min tthm in ppb in samples
- max
max tthm in ppb in samples
Source
National Drinking Water Database for Durham, NC. https://www.ewg.org
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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