Availability of data and information on water access

Source Water Planning

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This table compares source water protection policies, including options and stipulations for plan implementation and funding. Legend Jurisdiction implements this indicator Jurisdiction does not implement this indicator Jurisdiction partially implements this indicator
SWPP IndicatorIL
Groundwater protection planning is required
Watershed scale protection planning is required
Dedicated protection plans are required at the community water supply scale
Dedicated funding is available to implement plans
Periodic updates to plans are required
In the U.S. for Fiscal Year 2022, State Revolving Fund set-asides were used for source water protection programs


Water supplies meeting treatment requirements

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What do the violation categories include?

  • Health-Based Violations: Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water.
  • Acute Health-Based Violations: Health-based violations that have the potential to produce immediate illness.
  • Monitoring and Reporting (MR) Violations: Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the state environmental agency or EPA.
  • Public Notice (PN) Violations: Violations of the SDWA public notification requirements to immediately alert consumers if there is a serious problem with their drinking water that may pose a risk to public health.
  • Other Violations: Violations of other requirements of SDWA, such as issuing annual consumer confidence reports, or conducting periodic sanitary surveys.

Harmonization of species regulations draft copy

Harmful Algal Blooms

Reducing lead from distribution systems

Lead Inventory Status by Jurisdiction

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Maritime shipping cargo

Coastal wetland acreage

Diverse & Resilient Wetlands: Acreage of Projects

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Percent of Great Lakes Coastal Wetlands protected, by state or province.  By Stephanie Hickel, The Nature Conservancy

Phosphorus throughout the year

Annual Phosphorus Targets

Phosphorus in spring

Spring Phosphorus Targets

Strategies to reduce phosphorus

Sources of Total Phosphorus

In the above graphic, source types may be turned off and onto more closely examine sources within the stacked bar graph.

Domestic Action Plans in place for Lake Erie under the GLWQA

Harmonization of species regulations

Recreational boating AIS prevention programs

Monitoring for priority species and sites

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