These Surface Water Supply Protection Areas delineate those areas included in 310 CMR 22.00, the Massachusetts Drinking Water Regulations, as Surface Water Supply Protection Zones:

• ZONEA: represents a) the land area between the surface water source and the upper boundary of the bank; b) the land area within a 400 foot lateral distance from the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a); and c) the land area within a 200 foot lateral distance from the upper boundary of the bank of a tributary or associated surface water body.

• ZONEB: represents the land area within one-half mile of the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a), or edge of watershed, whichever is less. Zone B always includes the land area within a 400 ft lateral distance from the upper boundary of the bank of a Class A surface water source.

• ZONEC: represents the land area not designated as Zone A or B within the watershed of a Class A surface water source, as defined in 314 CMR 4.05(3)(a). More details...Map service also available.

Updated July 1, 2020. Valley Water conducted a study to evaluate the extent of these benefit zones to ensure they accurately reflect the areas receiving benefit from Valley Water activities to protect and replenish groundwater. The study did not evaluate the rates that are charged within the benefit zone. This study provided Valley Water with a scientific, transparent basis for proposing changes to the current benefit zones, if necessary.

Depicts only Draper City and Water Pro water zones.

Drinking Water Safeguard Zones (Surface Water) are catchment areas that influence the water quality for their respective Drinking Water Protected Area (Surface Water). They are identified where the protected area has been assigned as being "at risk" of failing the drinking water protection objectives of the Water Environment (Water Framework Directive) (England & Wales) Regulations 2017. Safeguard Zones are one of the main tools for delivering the drinking water protection objectives. These Safeguard Zones are a non-statutory, joint initiative between the Environment Agency and water companies that define areas where actions and measures will be targeted to address water contamination and avoid or minimise extra treatment needed by water companies. Impacts, sources, actions and measures proposed for each Safeguard Zone are provided in accompanying Action Plans which are periodically reviewed and updated. This dataset provides a national shapefile of all Safeguard Zone areas and identifies which substances are causing the drinking water protected area to be ‘at risk’. The links to the Safeguard Zone Action Plans are embedded in the shapefile attributes and provided in an accompanying csv download. The Drinking Water Protected Areas (Surface Water) dataset is also available elsewhere on the DSP site. This data was updated in 2022 following a national review of surface water protected area records for the Cycle 3 River basin Management Plans. Please note the status of these Safeguard Zones are continuously under review and details may change or become out of date once published. Please send any data or other enquiries in relation to this dataset to the point of contact identified below.Drinking Water Safeguard Zones (Surface Water) are identified using the Cycle 3 River Basin Management Plan water body areas that are upstream or contribute to the relevant Drinking Water Protected Area (Surface Water) that has been defined as being "At Risk" from contaminants.Click Here to go straight to the DSP Metadata Page for this Dataset.

These Surface Water Supply Protection Areas delineate those areas included in 310 CMR 22.00, the Massachusetts Drinking Water Regulations, as Surface Water Supply Protection Zones:ZONEA: represents a) the land area between the surface water source and the upper boundary of the bank; b) the land area within a 400 foot lateral distance from the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a); and c) the land area within a 200 foot lateral distance from the upper boundary of the bank of a tributary or associated surface water body.ZONEB: represents the land area within one-half mile of the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a), or edge of watershed, whichever is less. Zone B always includes the land area within a 400 ft lateral distance from the upper boundary of the bank of a Class A surface water source.ZONEC: represents the land area not designated as Zone A or B within the watershed of a Class A surface water source, as defined in 314 CMR 4.05(3)(a).More details...Feature service also available.

This polygon spatial dataset defines the Top End region and Arid Zone regions as defined by the Northern Territory Water Allocation Planning Framework. The regions are also referred to as NT Water Resource Climate Zones. The delineation uses the boundary between surface water catchments draining northwards into the Timor Sea or the Gulf of Carpentaria (Top End) and those flowing inland (Arid Zone). It is underpinned by a Top End index that draws from publicly available water balance indicators. These regions give an indication of the likelihood that a water resource will have the characteristics of a Top End or Arid Zone resource for guidance in water planning, management and regulation. The zones are displayed in NR Maps - https://nrmaps.nt.gov.au/nrmaps.html --- See folder: Water > Water Resources. Layer name: Climate Zones.

Drinking Water Groundwater Safeguard Zones (SgZs) are established around public water supplies where additional pollution control measures are needed. The Water Framework Directive requires that Drinking Water Protected Areas are identified (WFD Article 7.1) and that they are given the necessary protection (WFD Article 7.3) with the aim of avoiding deterioration in their quality in order to reduce the level of purification treatment required in the production of drinking water.

The geometry of Groundwater Safeguard Zones are based on Groundwater Source Protection Zones (SPZs)*, usually the SPZ 2, and use additional assessment to identify areas, which may or may not coincide with the SPZ, where additional measures are required to ensure that abstraction waters meet Article 7.3 of the WFD. SgZs can be large or small depending on the pollution problem and may not cover the whole of a catchment or sub-catchment.

*AfA029 Source Protection Zones [Merged] is available.

A pressure zone is an area of service supplied by a source or a number of sources that provides a constant hydraulic gradient. Typically, the hydraulic gradient is provided by the high water level of the reservoir serving the pressure zone. For pressure zones with no gravity storage, the hydraulic gradient may be provided by pumping and reducing in a direct-pressure principle of operation or solely by pressure reducing.

These Surface Water Supply Protection Areas delineate those areas included in 310 CMR 22.00, the Massachusetts Drinking Water Regulations, as Surface Water Supply Protection Zones:ZONEA: represents a) the land area between the surface water source and the upper boundary of the bank; b) the land area within a 400 foot lateral distance from the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a); and c) the land area within a 200 foot lateral distance from the upper boundary of the bank of a tributary or associated surface water body.ZONEB: represents the land area within one-half mile of the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a), or edge of watershed, whichever is less. Zone B always includes the land area within a 400 ft lateral distance from the upper boundary of the bank of a Class A surface water source.ZONEC: represents the land area not designated as Zone A or B within the watershed of a Class A surface water source, as defined in 314 CMR 4.05(3)(a).More details...Feature service also available.

This dataset contains the boundaries of water pressure zones within the Bellevue water service area. These zones are primarily determined by elevation and represent areas with distinct pressure characteristics for water distribution. The dataset is essential for managing and maintaining the city's water supply system, ensuring efficient water delivery, and informing infrastructure planning and development projects.

Data OriginThe dataset provided by Ofwat is rooted in legal records. The dataset is digitised from the official appointments of companies as water and sewage undertakers, which include legally binding documents and maps. These documents establish the specific geographic areas each water company is responsible for. The dataset was sourced from Constituency information: Water companiesData TriageAnonymisation is not required for this dataset, since the data is publicly available and focuses on geographical boundaries of water companies rather than individual or sensitive information. The shapefile serves a specific purpose related to geospatial analysis and regulatory compliance, offering transparent information about the service areas of different water companies as designated by Ofwat.Further ReadingBelow is a curated selection of links for additional reading, which provide a deeper understanding of the water company boundaries datasetOfwat (The Water Services Regulation Authority): As the regulatory body for water and wastewater services in England and Wales, Ofwat's website is a primary source for detailed information about the water industry, including company boundaries.Data.gov.uk: This site provides access to national datasets, including the Water Resource Zone GIS Data (WRMP19), which covers all water resource zones in England. This dataset is crucial for understanding geographical boundaries related to water management.Water UK: As a trade body representing UK water and wastewater service providers, Water UK's website offers insights into the industry's workings, including aspects related to geographical boundaries.Specifications and CaveatsWhen compiling the dataset, the following specifications and caveats were made:This shapefile is intended solely for geospatial analysis. The authoritative legal delineation of areas is maintained in the maps and additional details specified in the official appointments of companies as water and/or sewerage undertakers, along with any alterations to their areas.The shapefile does not encompass data on any structures or properties that, despite being outside the designated boundary, are included in the area, or those within the boundary yet excluded from the area.In terms of geospatial analysis and visual representation, the Mean High Water Line has been utilized to define any boundary extending into the sea, though it's more probable that the actual boundary aligns with the low water mark. Furthermore, islands that are incorporated into the area might not be included in this representation.Ofwat’s data was last updated on 25th May 2022Contact Details If you have a query about this dataset, please email foi@ofwat.gov.uk

Wellhead protection areas are important for protecting the recharge area around public water supply (PWS) groundwater sources. A Zone II is a wellhead protection area that has been determined by hydro-geologic modeling and approved by the Department of Environmental Protection’s (DEP) Drinking Water Program (DWP). In cases where hydro-geologic modeling studies have not been performed and there is no approved Zone II, an Interim Wellhead Protection Area (IWPA) is established based on DEP DWP well pumping rates or default values. Certain land uses may be either prohibited or restricted in both approved (Zone II) and interim (IWPA) wellhead protection areas. For MassDEP's regulatory wording of these zones please see https://www.mass.gov/eea/agencies/massdep/water/drinking/water-supply-protection-area-definitions.html.See metadata.Also see feature service.

The drinking water supply zones indicate relatively precisely the individual zones of a water supply system. Within a zone there are mainly uniform conditions. The different zones are assigned to the entire plant for larger water supply systems.

Squamish water pressure zone polygon layer. Named with area.

Of the approximately 6.6 million people living in the Mississippi embayment (MISE) region in the central United States, approximately 65 percent rely on groundwater for their drinking water (Dieter, Linsey, and others, 2017). Regional assessments of water quality in principal aquifer systems provide context for the long-term availability of these water resources for drinking-water supplies. To assess the current (2018) status of water quality in MISE in relation to drinking water supplies, groundwater withdrawal zones used for domestic and public supply were modeled using available groundwater well and hydrogeologic framework data. Three dimensional surfaces were modeled to map the depth zones at which groundwater is withdrawn for drinking water. These surfaces will be used to model groundwater quality as part of the U.S. Geological Survey National Water Quality Assessment project’s intensive principal aquifer analysis. The MISE region includes two principal aquifer systems: the surficial aquifer system, which is dominated by the Quaternary Mississippi River Valley Alluvial aquifer (MRVA), and the Mississippi embayment aquifer system, which includes deeper Tertiary aquifers and confining units. Based on the distribution of groundwater use for drinking water, the modeling effort is focused on MRVA and two hydrogeologic units from the deeper system, including the middle Claiborne aquifer (MCAQ) and lower Claiborne aquifer (LCAQ). The MRVA is a surficial, unconfined to semi-confined, highly productive aquifer used mostly for irrigation, with a lesser amount of groundwater use for public supply and domestic self-supply (Clark and others, 2011; Maupin and Barber, 2005). The median thickness of the MRVA is about 130 feet (ft) but it can be as much as 290 ft thick (Hart and others, 2008). The MCAQ is confined where overlain by the Middle Claiborne confining unit and is used dominantly for public supply. Domestic self-supply occurs along outcrop areas where the unit is shallower or crops out. The unit consists mostly of the Sparta Sand, but north of approximately the 35th parallel (near the border between Tennessee and Mississippi), the underlying lower Claiborne confining unit (LCCU) undergoes a facies change and the Memphis Sand is included in the MCAQ (Hosman and Weiss, 1991). The MCAQ has a median thickness of about 805 ft, but it can be as much as 1,890 ft thick (Hart and others, 2008). Although not as regionally important as MRVA or MCAQ, domestic and public supply wells withdraw groundwater from LCAQ, especially on the margins of the Mississippi embayment where LCAQ is relatively shallow or crops out. The aquifer does not extend north of approximately the 35th parallel because of a facies change in the LCCU. The aquifer is relatively thin, ranging from 50 to 195 ft thick with a median thickness of 125 ft (Hart and others, 2008). Continuous surfaces representing groundwater withdrawal zones used for drinking water were created for MRVA (combined domestic and public supply), MCAQ-domestic, MCAQ-public supply, LCAQ-domestic, and LCAQ-public supply, where the surfaces represent the altitude (in feet above North American Vertical Datum of 1988) of the bottom and top of the screened interval. Surfaces were created by kriging well points using Empirical Bayesian Kriging in ArcMap version 10.4 (ESRI, 2016). Well construction information for public supply (P) and domestic (D) wells and aquifer surfaces from the Mississippi Embayment hydrogeologic framework (Hart and others, 2008) were used to populate as much information as available about well use, well depth, screened interval, and aquifer as to improve the modeled surfaces. To assess error on the modeled surfaces, well datasets were separated into training (90 percent) and testing (10 percent) datasets for kriging and root mean square error was calculated. The number of wells used for kriging varied for each surface (WellsSummary.csv). A shapefile representing the density of wells within each raster cell was also produced to aid users in understanding general well locations and errors (ps_wellerrors.shp). For a full explanation of methods, see Processing Steps.

Luxembourg's surface water bodies have been grouped into so-called "study zones", which essentially correspond to the country's major catchment areas. Seven study zones have been designated in total.

This Web Feature Layer contains data that will help you determine access to safe water at a regional scale with a global extent. The data for this map was compiled in 2018 and at this time some regional water access information was unknown.Access to safe water is a good example of global inequality.

Global Inequality: where something is not fairly shared out to everyone.

In many areas of the world, we take it for granted that the tap will always provide safe and clean water for drinking, cooking and for washing with. However, more than one billion people worldwide have no choice but to use potentially harmful sources of water for bathing, cooking and even drinking. Every day this has the result of causing the death of more than 6,000 children.

In the developing world more than one billion people have inadequate access to water.

It has been estimated that 12% of the world’s population uses 85% of its water.Student workbook associated with this WebMap

This dataset is based on (non-harmonised) data from all water boards in the Netherlands in accordance with the Water Information Model (IMWA). The dataset contains the following IMWA objects: protection zone, water management worksSurface water body, water management worksWater storage area, water management worksWater protection, Profile of Free Space

Represents the water pressure zones for the municipal drinking water distribution system in the City of Waterloo.