Geographic Information System Program
The PWSSP is preparing to implement a Geographic Information System
(GIS) program. A GIS combines layers of information about a place to give a
better understanding of that location. Planning support systems can
measure and compare performances of different planning scenarios
according to planner- or citizen-defined indicators for land use,
transportation, natural resources, and employment, to name a few. As
communities grow, concerns over the placement of gas stations, placement
of sewer lagoons as opposed to septic tanks, placement of hospitals,
mortuaries, industrial buildings all need to be considered.
The PWSSP encourages all Navajo Nation community planners to become
involve in environmental planning in their community development initiatives.
Protection of the community’s drinking water source(s) is very important as it
will have serious impact on the community.
GIS's mission is to establish a positive working relationship to provide
computer generated maps of various water layers, boundaries and
community watering point information on the Navajo Nation.
The PWSSP is preparing to implement a Geographic Information System
(GIS) program. A GIS combines layers of information about a place to give a
better understanding of that location. Planning support systems can
measure and compare performances of different planning scenarios
according to planner- or citizen-defined indicators for land use,
transportation, natural resources, and employment, to name a few. As
communities grow, concerns over the placement of gas stations, placement
of sewer lagoons as opposed to septic tanks, placement of hospitals,
mortuaries, industrial buildings all need to be considered.
The PWSSP encourages all Navajo Nation community planners to become
involve in environmental planning in their community development initiatives.
Protection of the community’s drinking water source(s) is very important as it
will have serious impact on the community.
GIS's mission is to establish a positive working relationship to provide
computer generated maps of various water layers, boundaries and
community watering point information on the Navajo Nation.
Source Water Protection Guidance
The Navajo Nation faces significant challenges conserving our surface water supplies due to our arid southwest climate.
Therefore, 97% of our source water comes from groundwater. Groundwater is also used for raising livestock, agriculture, and
industry. Groundwater was once thought to be protected by layers of rock and soil, it is now known that groundwater can be
vulnerable to potential contamination. To address this, the NNEPA-PWSSP has established a guide for development in and
around water supply watersheds aimed at protecting the local source waters from existing land uses and new developments;
"Source Water / Wellhead Protection Guidance document."
The Navajo Nation faces significant challenges conserving our surface water supplies due to our arid southwest climate.
Therefore, 97% of our source water comes from groundwater. Groundwater is also used for raising livestock, agriculture, and
industry. Groundwater was once thought to be protected by layers of rock and soil, it is now known that groundwater can be
vulnerable to potential contamination. To address this, the NNEPA-PWSSP has established a guide for development in and
around water supply watersheds aimed at protecting the local source waters from existing land uses and new developments;
"Source Water / Wellhead Protection Guidance document."
Components of Susceptibility Assessments
Components of Susceptibility Assessment are used to develop
the source water protection plans. The SA process includes:
The SAs have been a process of gathering information and
processing this data to learn about the community's drinking
water source. The information should tell the residents where
their water supply comes from and what conditions and/or
practices may pose threats to quality. CLICK HERE to view
the Susceptibility Assessment Survey Form.
Components of Susceptibility Assessment are used to develop
the source water protection plans. The SA process includes:
- Identify the drinking water source (aquifer)
- Identify the sources of potential contamination
- Assessing how susceptible the drinking water source is
to contamination - Making the Susceptibility Assessments available to the
public
The SAs have been a process of gathering information and
processing this data to learn about the community's drinking
water source. The information should tell the residents where
their water supply comes from and what conditions and/or
practices may pose threats to quality. CLICK HERE to view
the Susceptibility Assessment Survey Form.
Wellhead Protection Guidance Document
Protecting drinking water sources is the first line of defense in ensuring safe drinking water.
Protecting drinking water sources is the first line of defense in ensuring safe drinking water.
- Cover Page/Table of Contents/Executive Summary
- Chapter 1: Introduction
- Chapter 2: Roles and Responsibilities
- Chapter 3: Implementation
- Chapter 4: Determination of Wellhead Protection Areas
- Chapter 5: Inventory of Potential Sources of Groundwater Contamination
- Chapter 6: Wellhead Protection Area Management Strategies & Implementation
- Chapter 7: Contingency Plans
- Chapter 8: Spill / Incident Response Planning
- Chapter 9: Wellhead Protection Requirements for New Public Water Systems
- Chapter 10: Public Outreach and Educational Efforts
- Glossary
- Appendix A: Section 1428, 1986 Amendments, Safe Drinking Water Act
- Appendix B: Wellhead Protection Related Excerpts from the NNPDWRs
- Appendix C-1: Checklist of Required Wellhead Protection Requirements
- Appendix C-2: Wellhead Protection Checklist
- Appendix D: Generic Scope of Work: Roles & Responsibilities of Owners of PWSs
- Appendix E: Sample of Notification Letters
- Appendix F-1: NNEPA Organizational Chart
- Appendix F-2: NNEPA Personnel Listing
- Appendix G: Contact Names, Addresses, and Phone Numbers
- Appendix H: Vulnerability Assessment Form (Version 3)
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| Navajo Nation Environmental Protection Agency • Public Water Systems Supervision Program |
Navajo Nation Chapter agencies can use these
Guidelines as part of the development review, comment,
and approval process. Land developers can use the
Guidelines when designing projects located in the areas
where water supply could be affected within watersheds.
The Guidelines build upon existing land use. They
where water supply could be affected within watersheds.
drinking water sources, for construction and new The
Guidelines build upon existing land use. They
development, and also include recommendations for
establish water quality control measures, specific to
establish water quality control measures, specific to
drinking water sources, for construction and new
development, and also include recommendations for
long-term maintenance of the control measures.
Overall, it serves as a road map for sensible
development, increases the reliability of the water
supply, and reduces the potential for drinking water
treatment costs.
Guidelines as part of the development review, comment,
and approval process. Land developers can use the
Guidelines when designing projects located in the areas
where water supply could be affected within watersheds.
The Guidelines build upon existing land use. They
where water supply could be affected within watersheds.
drinking water sources, for construction and new The
Guidelines build upon existing land use. They
development, and also include recommendations for
establish water quality control measures, specific to
establish water quality control measures, specific to
drinking water sources, for construction and new
development, and also include recommendations for
long-term maintenance of the control measures.
Overall, it serves as a road map for sensible
development, increases the reliability of the water
supply, and reduces the potential for drinking water
treatment costs.
GIS program will continue to collect and use geographic data for access and distribution of non-sensitive data to requesting
parties. Currently, general Navajo Tribal Utility Authority (NTUA) dataset are secured by approval of NTUA for the use of GIS
dataset license. Navajo EPA-PWSSP will not display their data outside the office without a written consent of NTUA. However,
other GIS dataset have come from Navajo Land Department and is available for the general public.
parties. Currently, general Navajo Tribal Utility Authority (NTUA) dataset are secured by approval of NTUA for the use of GIS
dataset license. Navajo EPA-PWSSP will not display their data outside the office without a written consent of NTUA. However,
other GIS dataset have come from Navajo Land Department and is available for the general public.
Disclaimer: All map information provided is still under development but is made available to the requesting party for the
Nation EPA-PWSSP as to the accuracy of this data, nor shall the fact of distribution constitute any such warranty, and no such
responsibility is assumed by the Navajo Land Department in connection therewith.
Nation EPA-PWSSP as to the accuracy of this data, nor shall the fact of distribution constitute any such warranty, and no such
responsibility is assumed by the Navajo Land Department in connection therewith.