This is a fact sheet about a chemical that may be found in some public or
private drinking water supplies. It may cause health problems if found
in amounts greater than the health standard set by the United States
Environmental Protection Agency (EPA).
What is Acrylamide and how is it used?
Acrylamide is an organic solid of white, odorless, flake-like crystals.
The greatest use of acrylamide is as a coagulant aid in drinking water
treatment. Other uses of include: to improve production from oil wells;
in making organic chemicals and dyes; in the sizing of paper and
textiles; in ore processing; in the construction of dam foundations and
tunnels.
The list of trade names given below may help you find out whether you
are using this chemical at home or work.
Trade Names and Synonyms:
2-Propenamide
Acrylic amide
Ethylenecarboxamide
Amresco Acryl-40
Acrylagel
Optimum
Why is Acrylamide being regulated?
In 1974, Congress passed the Safe Drinking Water Act. This law requires
EPA to determine safe levels of chemicals in drinking water which do or
may cause health problems. These non-enforceable levels, based solely on
possible health risks and exposure, are called Maximum Contaminant Level
Goals.
The MCLG for acrylamide has been set at zero because EPA believes
this level of protection would not cause any of the potential health
problems described below.
There are currently no acceptable means of detecting acrylamide in
drinking water. In this case, EPA is requiring water suppliers to use a
special treatment technique to control its amount in water. Since
acrylamide is used in drinking water treatment processes, it is being
controlled simply by limiting its use for this purpose.
These drinking water standards and the regulations for ensuring
these standards are met, are called National Primary Drinking Water
Regulations. All public water supplies must abide by these regulations.
What are the health effects?
Short-term: EPA has found acrylamide to potentially cause the following
health effects when people are exposed to it at levels above the MCL for
relatively short periods of time: damage to the nervous system, weakness
and incoordination in the legs.
Long-term: Acrylamide has the potential to cause the following
effects from a lifetime exposure at levels above the MCL: damage to the
nervous system, paralysis; cancer.
How much Acrylamide is produced and released to the environment?
Demand for acrylamide in the early 1990s was about 120 million pounds. The
main source of concern for acrylamide in drinking water is from its use
as a clarifier during water treatment. When added to water, it
coagulates and traps suspended solids for easier removal. However, some
acrylamide does not coagulate and remains in the water as a contaminant.
Improvements in the production and use of acrylamide have made it
possible to control this contamination to acceptable levels.
From 1987 to 1993, according to EPA's Toxic Chemical Release
Inventory, acrylamide releases to land and water totalled over 40,000
lbs. These releases were primarily from plastics industries. The largest
releases occurred in Michigan.
What happens to Acrylamide when it is released to the environment?
Acrylamide does not bind to soil and will move into soil rapidly, but it
is degraded by microbes within a few days in soil and water. Its has
little tendency to accumulate in fish.
How will Acrylamide be detected in and removed from my drinking
water?
The regulation for acrylamide became effective in 1992. EPA requires your
water supplier to show that when acrylamide is added to water, the
amount of uncoagulated acrylamide is less than 0.5 ppb.
How will I know if Acrylamide is in my drinking water?
If the treatment technique for acrylamide fails, the system must notify
the public via newspapers, radio, TV and other means. Additional
actions, such as providing alternative drinking water supplies, may be
required to prevent serious risks to public health.
This is a factsheet about a chemical that may be found in some
public or private drinking water supplies. It may cause health problems
if found in amounts greater than the health standard set by the United
States Environmental Protection Agency (EPA).
Drinking Water Standards:
| Mclg: Zero
Mcl: Treatment Technique |
Acrylamide Releases to Water and Land, 1987 to 1993 (in pounds):
| |
Water |
Land |
| TOTALS (in pounds) |
36,287 |
5,818 |
|
Top Five States* |
|
MI |
12,200 |
0
|
|
WA |
8,000 |
0
|
|
CT |
5,690 |
0
|
|
LA |
4,367 |
500
|
|
PA |
2,505 |
20
|
|
AL |
1,262 |
1,258
|
|
Major Industries* |
|
Plastics and resins |
19,002 |
2,177
|
|
Pulp mills |
8,000 |
0
|
|
Indust. organics |
3,107 |
2,200
|
|
Indust. inorganics |
2,510 |
500
|
* Water/Land totals only include facilities with
releases greater 100 lbs. |
|
Note: This fact sheet is part of a larger publication
adapted from U.S. EPA publication: EPA National Primary Drinking Water
Regulations.