ASTM E2717-11
(Practice)Standard Practice for Estimating the Environmental Load of Residential Wastewater
Standard Practice for Estimating the Environmental Load of Residential Wastewater
SIGNIFICANCE AND USE
There is increasing concern regarding water quality. The first national-scale U.S. examination of these organic wastewater contaminants in streams, conducted by the Toxic Substances Hydrology Program of the U.S. Geological Survey (USGS), indicated that a broad range of chemicals found in residential, industrial, and agricultural wastewaters commonly occurs in mixtures at low concentrations downstream from areas of intense urbanization and animal production. The chemicals include pharmaceuticals, natural and synthetic hormones, detergent metabolites, plasticizers, insecticides, and fire retardants. One or more of these chemicals were found in 80 % of the streams sampled.
This practice may be used by building owners and design professionals to assess water stewardship impacts of a residence. In particular, it is intended to inform design decisions and operation decisions regarding estimated wastewater quality impacts of a building.
This practice may be used by planners and water treatment professionals to assess water stewardship impacts of a residential area. In particular, it is intended to inform infrastructure decisions regarding estimated wastewater quality impacts of a residential service area.
This practice may be used to estimate the types and amounts of non-biological wastes entering a wastewater system. Such knowledge is becoming increasingly important in developing sustainable approaches to water stewardship.
Table 2, Environmental Load for Average U.S. Single-Family Home, does not list all chemicals used in homes; in order to obtain a more accurate estimation, the chemicals used in specific homes should be listed. In addition, it may be helpful to monitor wastewater to determine variances, if any, from the estimated environmental load.
SCOPE
1.1 This practice provides a set of instructions for estimating the environmental load of residential water, as it is discharged from a residence. The environmental load is calculated based on the number and type of fixtures in the home, the common household chemicals used, and the number of people in the home. While the format is broadly applied internationally, the parameters stated herein reflect North American averages and would need to be modified if used elsewhere.
1.1.1 Averages Method—The Averages Method provides an estimate of the annual environmental load for the average U.S. single-family home based on 2000 U.S. Census and 2007 U.S. Census Data and U.S. EPA/625/R-00/008 characterization of residential wastewater flows.
1.1.2 Unique Product Parameters Method—The Unique Product Parameters Method provides an estimate of the annual environmental load, where the home/product parameter values are the same as those used for the Averages Method except for estimated amounts of chemical contaminants listed in Table 1 or average total annual use of products as listed in Table 1, or both.
1.1.3 Adjusted Averages Method—The Adjusted Averages Method provides an estimate of the annual environmental load, where home/product parameter values differ from those used for the Averages Method, except that chemical contaminants associated with products do not vary. (Table 1 remains the same for: Typical Water Contaminants, Estimated Amount of Contaminant in Product (%), and the Percent Waste.)
1.1.4 Additional/Alternative Chemicals Method—The Additional/Alternative Chemicals Method provides an estimate of the annual environmental load, of chemicals used that are not listed in Table 1.
1.1.5 The Unique Product Parameters Method, Adjusted Averages Method, and Additional Chemicals Method may be used in combination with each other.
1.2 Instructions are provided for a single-family home. Estimates may be expanded to an aggregate number of single-family homes by assuming an average home size and multiplying by the number of homes. Estimates may be adapted to multi-unit residential buildings by factoring the home parameters for size, occupanc...
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Designation: E2717 − 11
Standard Practice for
Estimating the Environmental Load of Residential
1
Wastewater
This standard is issued under the fixed designation E2717; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.1.5 The Unique Product Parameters Method, Adjusted
Averages Method, and Additional Chemicals Method may be
1.1 This practice provides a set of instructions for estimat-
used in combination with each other.
ing the environmental load of residential water, as it is
discharged from a residence. The environmental load is calcu- 1.2 Instructions are provided for a single-family home.
lated based on the number and type of fixtures in the home, the Estimates may be expanded to an aggregate number of
common household chemicals used, and the number of people single-family homes by assuming an average home size and
in the home. While the format is broadly applied multiplying by the number of homes. Estimates may be
internationally, the parameters stated herein reflect North adapted to multi-unit residential buildings by factoring the
American averages and would need to be modified if used homeparametersforsize,occupancy,andfixturesasnecessary.
elsewhere.
1.3 For the purpose of this practice, environmental load
1.1.1 Averages Method—TheAverages Method provides an
refers to chemical contaminants that may be dissolved or
estimate of the annual environmental load for the average U.S.
suspended in water.
single-family home based on 2000 U.S. Census and 2007
1.3.1 Estimates of environmental load do not include or-
U.S. Census Data and U.S. EPA⁄625⁄R-00⁄008 characteriza-
ganic matter common for urine, feces, and vomit.
tion of residential wastewater flows.
1.3.2 Estimates of environmental load do not include bulk
1.1.2 Unique Product Parameters Method—The Unique
food waste such as kitchen scraps.
Product Parameters Method provides an estimate of the annual
1.3.3 Estimates of environmental load do not include bulk
environmental load, where the home/product parameter values
cellulose waste such as toilet paper.
are the same as those used for theAverages Method except for
1.3.4 Actual environmental load may vary depending on
estimated amounts of chemical contaminants listed in Table 1
typesandamountsofchemicalsusedinaspecifichomeandthe
or average total annual use of products as listed in Table 1,or
number of people in the home.
both.
1.4 The values stated in inch-pound units are to be regarded
1.1.3 Adjusted Averages Method—The Adjusted Averages
as standard. No other units of measurement are included in this
Method provides an estimate of the annual environmental load,
standard.
where home/product parameter values differ from those used
1.5 This standard does not purport to address all of the
for the Averages Method, except that chemical contaminants
associated with products do not vary. (Table 1 remains the safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
same for: Typical Water Contaminants, Estimated Amount of
Contaminant in Product (%), and the Percent Waste.) priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1.1.4 Additional/Alternative Chemicals Method—The
Additional/Alternative Chemicals Method provides an esti-
2. Referenced Documents
mate of the annual environmental load, of chemicals used that
2
are not listed in Table 1.
2.1 ASTM Standards:
1
This practice is under the jurisdiction of ASTM Committee E60 on Sustain-
2
ability and is the direct responsibility of Subcommittee E60.07 on Water Use and For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Conservation. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Jan. 1, 2011. Published January 2011. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
E2717-11. the ASTM website.
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E2717 − 11
TABLE 1 Chemical Contaminants Attributable to Wastewater
Average Total Estimated Amount
Typical Water
Product Type Typical Uses Product Used Assumptions of Contaminant Percent Waste
Contaminants
Per Year in Product (%)
A
Antiperspirant / Controls sweat and Aluminum 66.56 oz/year Usage per year is 22.22 65 – 95
Deodorant body odor (feet, based on 10 sticks per
underarms, genitalia) person
Bar Soap Used for daily hygiene Sodium Salts 48 oz/year Usa
...








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