Drinking Water Supply Management Area (DWSMA)
Go to Section:- Overview
- Data Quality
- Data Organization
- Coordinate System
- Attributes
- Distribution - Get Data
- Metadata Reference
Section 1: Overview
Originator:Minnesota Department Of Health - Environmental Health Division - Source Water Protection Unit
Title:
Drinking Water Supply Management Area (DWSMA)
Abstract:
Drinking water supply management area (DWSMA) is the Minnesota Department of Health (MDH) approved surface and subsurface area surrounding a public water supply well that completely contains the scientifically calculated wellhead protection area and is managed by the entity identified in a wellhead protection plan. The boundaries of the drinking water supply management area are delineated by identifiable physical features, landmarks or political and administrative boundaries.
Purpose:
This dataset was developed with the intention of protecting the public drinking water supply and complies with the federal Safe Drinking Water Act, United States Code, title 42 and the State of Minnesota Rule (parts 4720.5100 to 4720.5590).
Time Period of Content Date:
03/08/2019
Progress:
Complete
Maintenance and Update Frequency:
Continually
Spatial Extent of Data:
Minnesota
Bounding Coordinates:
-97.072169
-91.139865
48.805032
43.432979
Place Keywords:
Minnesota
Theme Keywords:
Drinking Water Supply Management Area, Groundwatershed, Drinking water, Capture zone, Wellhead Protection
Theme Keyword Thesaurus:
MDH GIS Data Keyword Thesaurus
Access Constraints:
None
Use Constraints:
Geospatial data is provided "as-is". MDH makes no warranty, expressed or implied, and disclaims all implied warranties of the data for any purpose. MDH also does not warrant that the geospatial data is error free. The geospatial data was developed for MDH internal business purposes. MDH shall not be liable for any activity involving the geospatial data with respect to the following: a.) Lost profits, lost savings or any other consequential damages; b.) The fitness of the geospatial data for a particular purpose; or c.) The installation of the geospatial data, its use or the results obtained.
Contact Person Information:
Source Water Protection Unit Staff,
Minnesota Department of Health - Environmental Health Division
P.O box 64975
St. Paul,
MN
55164-0975
Phone: (651) 201-4700
Fax: (651) 201-4701
Email: health.drinkingwater@state.mn.us
Associated Data Sets:
Drinking Water Supply Management Area Vulnerability, Wellhead Protection Areas
Section 2: Data Quality
Attribute Accuracy:
Logical Consistency:
Completeness:
All approved DWSMA areas that are active as of the temporal extent ending date.
Horizontal Positional Accuracy:
Minimum scale requirement for data and/or maps is 1:24,000 (See Lcm_code in attribute table).
Lineage:
Source Scale Denominator: 0
Type of Source Media: CD ROM
Section 3: Spatial Data Organization (not used in this metadata)
Section 4: Coordinate System
Horizontal Coordinate Scheme:
Universal Transverse Mercator
UTM Zone Number:
15
Horizontal Datum:
NAD83
Horizontal Units:
meters
Vertical Datum:
Vertical Units:
Depth Datum:
Depth Units:
Section 5: Attributes
Overview:
In general a DWSMA represents the management area for one public water supplier, however in dense populations, individual DWSMAs can extend into another public water suppliers DWSMA which can cause ambiguity in how to manage the area. In order to resolve this, MDH began creating single wellhead plans for multiple public water suppliers who were in close proximity to each other.
The West Metro was first wellhead plan created this way and is included in this data set. It was approved in 2025 and consists of 8 public water suppliers with a group pwsid of 2000000. The individual public water suppliers that are part of this DWSMA are as follows:
Hopkins (pwsid:1270016)
Saint Louis Park (pwsid: 1270050)
Eden Prairie (pwsid:1270010)
Bloomington (pwsid: 1270001)
Chanhassan (pwsid:1100001)
Edina (pwsid:1270011)
Minnetonka (pwsid:1270031)
Richfield (pwsid: 1270045)
Detailed Citation:
Table Detail:
dwsma - Drinking Water Supply Management Area| Field Name | Valid Values | Definition | Definition Source |
|---|
| FID | - | Internal feature number | ESRI |
| Shape | - | Feature geometry | ESRI |
| AREA | - | | |
| PERIMETER | - | | |
| DWS_ID | 66 to 755 | Drinking Water Supply Management ID | MDH |
| DWS_NAME | - | Name of the DWSMA | MDH |
| WHP_TYPE_C | enumerated | Type of Wellhead Protection Area code | MDH |
| A | Aquifer delineation | |
| C | Conjuctive delineation | |
| F | Fractured Rock delineation | |
| FC | Fractured Rock & Conjunctive delineation | |
| FA | Fractured Rock & Aquifer delineation | |
| CZ_TYPE_C | enumerated | Type of capture zone code | MDH |
| S | Single capture zone for a given DWSMA | |
| M | Multiple capture zones for a given DWSMA | |
| C | Complex capture zones for a given DWSMA (overlapping or adjacent regions) | |
| DWSA_D | 19940919 to 20140813 | Date of DWSMA Approval. For multi-community DWSMAs; it is the final date that all public water suppliers approved the plan. | MDH |
| DWS_STAT_C | enumerated | DWSMA Status code | MDH |
| A | Active | MDH |
| D | Deactivated is used when there is no chance that the DWSMA/WHPA will be activated again like when a system seals all their wells in their approved DWSMA/WHPA | MDH |
| I | Inactive is used when there is no chance that the DWSMA/WHPA will be activated again like when a system seals all their wells in their approved DWSMA/WHPA | MDH |
| LCM_CODE | enumerated | Location collection method code | MDH |
| DS1 | Digitization (Screen) - DRG Map (1:24,000) | |
| DS2 | Digitization (Screen) - DOQ Map (1:12,000) | |
| DS3 | Digitization (Screen) - NAIP Map (1:12,000) | |
| ACRES | - | Acres of the DWSMA (derived from AREA / 4046.8717 ) + 0.001 | MDH |
| PLAN_ID | - | Wellhead Protection Plan ID | MDH |
| PWSID | - | Public Water Supply ID (PWSID) or group PWSID when a DWSMA includes more than one public water supplier. | MDH |
Section 6: Distribution
Publisher:
Minnesota Department of Health - Environmental Health Division - Source Water Protection Unit
Publication Date:
03/08/2019
Contact Person Information:
Source Water Protection Unit Staff,
Minnesota Department of Health - Environmental Health Division
P.O box 64975
St. Paul,
MN
55164-0975
Phone: 651- 201-4700
Fax: 651-201-4701
Email: health.gis@state.mn.us
Distributor's Data Set Identifier:
Distribution Liability:
Geospatial data is provided "as-is". MDH makes no warranty, expressed or implied, and disclaims all implied warranties of the data for any purpose. MDH also does not warrant that the geospatial data is error free. The geospatial data was developed for MDH internal business purposes. MDH shall not be liable for any activity involving the geospatial data with respect to the following: a.) Lost profits, lost savings or any other consequential damages; b.) The fitness of the geospatial data for a particular purpose; or c.) The installation of the geospatial data, its use or the results obtained.
Online Linkage: I AGREE
to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details.
Section 7: Metadata Reference
Metadata Date:
08/20/2021
Contact Person Information:
Source Water Protection Unit Staff,
Minnesota Department of Health - Environmental Health Division
P.O box 64975
St. Paul,
MN
55164-0975
Phone: 651- 201-4700
Fax: 651-201-4701
Email: health.drinkingwater@state.mn.us
Metadata Standard Name:
Minnesota Geographic Metadata Guidelines
Metadata Standard Version:
1.2
