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 Source Water Assessment Program (SWAP) ArcIMS Mapping Tool
Information and data presented on this site are obtained from
various Federal, State, and local agencies and are subject to
revision. The data are released on the condition that the Illinois
EPA may not be held liable for any damages resulting from their
use. Please read the Disclaimer
Statement for a complete explanation of Illinois EPA's policy
on data distribution and liability. In addition, Metadata
is available for each dataset detailing the specific limitations
and use constraints for that data set.
Start
using the SWAP ArcIMS Mapping Tool
(opens in a new window)
User Information:
Users of the Source Water Assessment Program (SWAP) ArcIMS Mapping Tool can locate,
create, and print maps of any size area within Illinois for use with SWAP issues.
Map layers may be added by clicking the "visible" check box next to the layer's name and
pressing the Refresh Map button. To locate an area of interest,
select one of the following methods:
- use the Zoom tool to draw a rectangle (left click and
drag) over the area of interest, or
- click on the Query tool and select an option that
displays the area of interest.
When finished, the map can be printed using the Print tool.
First time users may want to visit the
Introduction and Help page for more detailed
instructions (also available through the Help tool).
This site was developed using
Environmental Systems Research
Institute, Inc (ESRI) ArcIMS 4.0 Internet map server. Because of the
nature of the Internet map server, the following pages are best viewed with
Microsoft Internet Explorer 5.0
or later version, or
Netscape Navigator 4.7
or later version.
Performing Well Surveys
Requirements exist in Illinois and federal regulations to identify potable water wells
in relation to cleanup sites to ensure that water supply wells are protected by proposed
cleanup remedies. Because of concerns about known inaccuracies in certain databases and
instances with inadequate documentation, a more thorough approach is needed for surveys
of potable water supply wells. While some additional research and reporting may be
required, this approach should not prove overly burdensome to the regulated community,
and it will provide the level of detail necessary to make informed decisions to protect
well users. Much of the information for identifying wells can now be accessed through
the Source Water Assessment Program ArcIMS Mapping Tool (SWAP). This system shows
locations of all community and non-community water supply wells and is maintained and
updated by the Illinois EPA's Division of Public Water Supplies. This data is the most
accurate and complete data currently available for these wells. In addition, the system
includes the ISGS database of private and semi-private drinking water wells. The ISGS
database does not contain all of the wells mentioned above, and in some cases, the
locations may not be accurate. However it is the most complete electronic database
available. The SWAP system also shows minimum and maximum setback zones and regulated
recharge areas for public water wells, as well as Class III Groundwater areas. This data
may be used to meet the Right to Know Potable Water Well Survey requirements of 35 Ill.
Adm. Code 1600.210 (b)(1) and 1600.210(b)(2).
 PDF of Section
Definitions:
- Community Water Supply -- a public water supply that serves or is
intended to serve at least 15 service connections used by residents or
regularly serves at least 25 residents.
- Non-community Water Supply -- a public water supply that is not a
community water supply.
- Public Water Supply -- all mains, pipes and
structures through which water is obtained and distributed to the
public, including wells and well structures, intakes and cribs, pumping
stations, treatment plants, reservoirs, storage tanks and appurtenances,
collectively or severally, actually used or intended for use for the
purpose of furnishing water for drinking or general domestic use and
which serve at least 15 service connections or which regularly serve at
least 25 persons at least 60 days per year. A public water supply is
either a community water supply or a non-community water supply.
- Potential Source of Contamination - the phrase
"potential source" is expressly used here to describe sources that possibly
are or have the capability of becoming a source of drinking-water
contamination.
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