Metadata for Montana Public Water System Sources, 2013 Metadata for Montana Public Water System Sources, 2013

Download full XML Metadata

Identification Information:

Citation:

Originator: Montana Department of Environmental Quality
Publication date: 10/25/2013
Title: Montana Public Water System Sources, 2013
Other citation details:: The former name of the data set on the NRIS web site was "pws"
Online linkage: https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Public_Water_Supplies2013.zip

Abstract:

This database provides information on Public Water Systems (PWS) and facilitates access to Source Water Protection Program reports that are referred to as Source Water Delineation and Assessment Reports (SWDARs).

The State Library provided public access to this data on behalf of the Department of Environmental Quality between 2008 and 2015. For access to current data, please go to http://svc.mt.gov/deq/dst/#/app/swp or http://svc.mt.gov/deq/wmadst/default.aspx?type=SWP. Please contact the State Library if you need a copy of this 2013 version of the data.

A public water system is a system that serves 25 or more people or has 15 or more service connections and operates at least 60 days per year. The Department of Environmental Quality (DEQ) regulates all types of PWSs in Montana with the exception of those owned and operated by the Native American nations. There are currently over 2,000 PWSs in Montana and between 75 and 100 are added each year.

There are three general classes of PWSs. Community (C) PWSs serves a community of year-round residents; towns and subdivisions for example. Non-Community Non-Transient PWSs (NCNT) do not serve communities but they do provide water to the same people for at least six months of a year; schools, hospitals, and businesses where people are employed but do not reside are examples. Schools and some private systems in this class are designated with a P instead of the NCNT indicating they are Public or Private water systems. Transient (T) PWSs do not serve communities and do not regularly serve the same people; campgrounds, parks, rural motels, and cafes are examples. Some of these water systems are designated with a NC (Non-Community) class code. Some water system serve a multi-family subdivision that does not have sufficient population or service connections to be formally classified as a PWS. These systems are assigned a class codes of NP for Non-Public water system. In addition, some systems are assigned a class of CC indicating Consecutive Connection which means the system purchases water from another PWS.

The 1996 Amendments to the Federal Safe Drinking Water Act required all PWSs in the nation to have SWDARs completed and updated every 5 years. DEQ is responsible for providing SWDARs for all non-tribal PWSs in Montana. As of January 2008, the Source Water Protection Program (SWPP) completed SWDARs for about 96% of the active PWSs, or about 1,950 reports. As these reports are completed they are published to the SWPP Query System hosted by the State Library. In addition to providing access to the SWDARs, the SWPP Query System provides the ability to view the PWS locations and to view potential contaminant sources located within 1,000 feet to 3 miles of a PWS.

PWS information comes from a current database of regulated public water systems maintained by DEQ. Copies of the SWDARs are also maintained at DEQ. Updates are used to provide new records (75 to 100 per year) and to correct errors in existing records when necessary.

Purpose:

To identify and locate public water system sources (wells, springs, and surface water intakes) and provide access to Source Water Delineation and Assessment Reports (SWDARs).

Time period of content:

Calendar date: 10/25/2013
Currentness reference: ground condition

Status:

Progress: Complete
Maintenance and update frequency: As needed

Access constraints: None

Use constraints:

The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Point of contact:

Joe Meek
Montana Department of Environmental Quality
PO Box 200901
Helena, MT 59620-0901
Telephone: 406-444-4806
E-Mail: jmeek@mt.gov

Data Quality Information:

Lineage:

Source information:

Originator: Montana Department of Environmental Quality
Publication date: 10/25/2013
Title: Public Water System Source Water Protection Reports
Online linkage: http://mslapps.mt.gov/Geographic_Information/Data/SourceWaterProtectionProgram/
Source scale denominator: 24000
Source contribution:: The maps or descriptions of the water sources are obtained from these reports.
Calendar date: 10/25/2013

Process step:

Identities of public water systems were obtained from the DEQ public water system database. DEQ hardcopy files were searched to obtain maps showing locations and latitudes and longitudes were obtained by querying georeferenced 1:24,000 scale maps for the coordinates of the locations specified on the hardcopy maps. For records with no maps available, latitudes and longitudes were estimated from GPS readings, address matching, or locations of nearest town or placee. Experience of DEQ personnel was relied on to locate facilities where no location information was available in DEQ hard files. SWDARs are published to the SWPP Query System as they are completed by SWPP staff.

Spatial Data Organization Information:

Point and vector object information:

SDTS object type: Entity point

SDTS object count: 3557

Spatial Reference Information:

Horizontal coordinate system definition:

Grid coordinate system name: State Plane Coordinate System

SPCS zone identifier: 2500

Lambert conformal conic:

Standard parallel: 45.000000
Standard parallel: 49.000000
Longitude of central meridian: -109.500000
Latitude of projection origin: 44.250000
False easting: 600000.000000
False northing: 0.000000

Planar distance units: meters

Geodetic model:

Horizontal datum name: North American Datum of 1983
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137.000000
Denominator of flattening ratio: 298.257222

Entity and Attribute Information:

Entity type label: MT_Public_Water_Supplies.dbf

Attribute label: FID

Attribute definition: Shapefile sequence number

Attribute label: Shape

Attribute definition: Feature geometry

Attribute label: PWSID

Attribute definition: Montana public water system identification number

Attribute label: SOURCEID

Attribute definition: Montana public water system source identification number

Attribute label: CLASS

Attribute definition: Montana public water system class

Attribute label: SOURCETYPE

Attribute definition: Water source type, such as groundwater or surface water

Attribute label: PRIMRYNAME

Attribute definition: Name of public water system

Attribute label: SOURCENAME

Attribute definition: Name of water source for a public water system

Attribute label: CITY

Attribute definition: City or town nearest to the water system

Attribute label: COUNTY

Attribute definition: Montana county in which public water system is located

Attribute label: RESPOPUL

Attribute definition: Number of persons served year round by a public water system

Attribute label: NRESPOPUL

Attribute definition:: Number of persons served on a temporary basis by a public water system

Attribute label: LATDD

Attribute definition: Latitude of the public water source

Attribute label: LONGDD

Attribute definition: Longitude of the public water source

Attribute label: OBJECTID

Attribute definition: Sequence number from MSL enterprise geodatabase

Distribution Information:

Distributor:

Montana State Library
PO Box 201800
Helena, MT 59620-1800
Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov

Resource description: Downloadable Data

Distribution liability:

Metadata Reference Information:

Metadata date: 12/15/2015

Metadata review date: 01/09/2008

Metadata contact:

Joe Meek
Montana Department of Environmental Quality
PO box 200901
Helena, MT 59620-0901
Telephone: 406-444-4806
E-Mail: jmeek@mt.gov