The most important component of source water assessment is the
physical location of the drinking water source. The TCEQ has had to
rely on many outside agencies and individuals to provide locations
for the approximately 20,000 wells and intakes currently contained
in our database. The TCEQ SWAP Program has been mapping source
locations for the last decade using a variety of techniques from
hand-drawn maps to state-of-the-art Global Positioning System (GPS)
technology.
If you feel that the mapped well location(s) provided with your
system’s source water assessment report are incorrect, or if
you would like to submit the location for a new well that
wasn’t included in the report, please submit a location
change request to TCEQ. The following information will explain how
to submit a location change request to the TCEQ SWAP Program:
How Do I Submit a Location Change Request?
- Document in writing that the location provided with the source
water assessment is incorrect or that you are submitting a location
for a new well not previously mapped.
- Provide a new location to the TCEQ SWAP Program using one of
the map types listed below.
- Send the new location to the address provided below.
Which Map Type Should I Use to
Plot the New Location?
- United States Geological Survey (USGS) 7.5-minute topographic
map. This is the preferred base map for the TCEQ SWAP location
effort as all of our procedures utilize the electronic or digital
version of these maps.
- Texas Department of Transportation (TxDOT) highway map for your
county.
- County map from a local government, 911 committee, commercial
firm, or comparable source.
- City street map developed by the city or a commercial
firm.
- Engineering plans of the facility. You will also need to note
where the facility is located on one of the maps listed above.
- An aerial photo or digital orthophoto quadrangle (DOQ) can also
be used as a base map.
- If applicable, you may also use a copy of the printed map
provided with your assessment report to indicate a location
change.
NOTE: Internet- or Web-based address matching
software such as Yahoo Maps, MapQuest, and Globe Explorer might not
provide accurate locations based on addresses. In fact, the results
of an Internet address search can sometimes be miles away from its
actual location. Please double-check and confirm the location if
you are using this method to locate your well.
Where Can I Get One of the Maps Listed Above?
Digital maps may be downloaded FREE from the Texas Natural Resources
Information System 
.
To obtain a copy of one of the USGS maps please contact
the USGS:
On the Web
By phone: 1-888-ASK-USGS (1-888-275-8747)
Via U.S. Mail: USGS Information Services, Box 25286, Denver, CO,
80225.
For Aerial or DOQ Maps, see the USGS Web site
NOTE: USGS maps are also available from local
commercial firms that deal with surveying and mapping products.
Check your local Yellow Pages for assistance.
To obtain a copy of one of the TxDOT maps, please
contact TxDOT:
On the Web
Via Telephone: 1-512-486-5014
Via U.S. Mail: Texas Department of Transportation, P.O. Box 5020,
Austin, TX, 78763
Tips for Accurate Mapping
Accurate locations are critical to the success of the SWAP
program. Please note the following tips when submitting a location
change request:
- Be as accurate and precise as possible by using existing
intersections and other landmarks to zero in on the location.
- Provide exact verbal descriptions when applicable, such as,
"Well is 600 feet south of Avenue J and 130 feet west of Dover
Street."
- Label all mapped locations with the Public Water Supply
Identification number and the Owner’s Name or Designation for
the well, such as "Well #1" or "Kinney Street Well."
- If providing a partial copy of a USGS 7.5-minute topographic
map, please include the quadrangle name found on the bottom right
corner of the map.
Where Do I Send the Well Location Change Request?
Send all maps and correspondence to:
Public Drinking Water Section
Source Water Assessment and Protection Program MC-155
P.O. Box 13087
Austin, Texas 78711-9958
For further assistance please contact
us at the SWAP Program.
