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Reports, Data & Maps

September 16, 2025 | Agency

Search below by keyword for DDAGW-related reports, data, and maps.

Other resources are available:

  • Guides, Manuals & Policies Search
  • Educational and How-to Resources Search

Keyword Search

{"data":[["S","S","S","S","H"],["Description","Resource Type","Topic","File Type","URL"],["Greater Miami Sole Source Aquifer Map","Data","Groundwater","CSV","http://epa.ohio.gov/static/Portals/28/documents/gwqcp/inorganic_csv.zip"],["Organic Ambient Groundwater Data","Data","Groundwater","CSV","http://epa.ohio.gov/static/Portals/28/documents/gwqcp/organic_csv.zip"],["Public Water System Harmful Algal Bloom Data and Map","Map","Harmful Algal Blooms (HABs)","GIS","https://geo.epa.ohio.gov/portal/apps/dashboards/e72499f345ec43579513da521d83347e"],["Drinking Water Advisories and Violations Map","Map","Data","GIS","https://geo.epa.ohio.gov/portal/apps/experiencebuilder/experience/?id=72cf2af9e2dd459aa5d758b54fb10c0c"],["Recreational and Beach Monitoring Data and Advisories","Map","Harmful Algal Blooms (HABs)","GIS","https://publicapps.odh.ohio.gov/beachguardpublic/"],["Technical Series: Fluoride in Ohio's Groundwater","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/gwqcp/fluoride_ts.pdf"],["Inorganic Ambient Groundwater Data - Descriptions","Data","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/gwqcp/data_descriptions.pdf"],["Organic Ambient Groundwater Data - Descriptions","Data","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/gwqcp/data_descriptions.pdf"],["Greater Miami Sole Source Aquifer Map","Map","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/greatmiami-ssa.pdf"],["Sole Source Aquifer GIS Metadata","Data","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/ssa_metadata.pdf"],["Petition for Northern Sole Source Aquifer Designation as listed in the Federal Register (Greater Miami Sole Source Aquifer)","Report","Groundwater","PDF","http://epa.ohio.gov/static/Portals/28/documents/swap/SSA_greatmiaminorth_FR.pdf"],["Petition for Southern Sole Source Aquifer Designation as listed in the Federal Register (Greater Miami Sole Source Aquifer)","Report","Groundwater","PDF","http://epa.ohio.gov/static/Portals/28/documents/swap/SSA_greatmiamisouth_FR.pdf"],["Allen County Sole Source Aquifer Map","Map","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/allenco-ssa.pdf"],["Petition for Sole Source Aquifer Designation as listed in the Federal Register (Allen County Sole Source Aquifer)","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/SSA_allenco_FR.pdf"],["Catawba Island Sole Source Aquifer Map","Map","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/catawbaisland-ssa.pdf"],["Petition for Sole Source Aquifer Designation as listed in the Federal Register (Catawba Island Sole Source Aquifer)","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/SSA_catawbaisland_FR.pdf"],["Pleasant City Sole Source Aquifer Map","Map","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/pleasantcity-ssa.pdf"],["Petition for Sole Source Aquifer Designation as listed in the Federal Register (Pleasant City Sole Source Aquifer)","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/SSA_pleasantcity_FR.pdf"],["Public Drinking Water Supply Beneficial Use Assessment Summary Report for the Sandusky River Watershed (2006)","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/35/documents/Sandusky-PDWSReport-final.pdf"],["Technical Series: Radionuclides in Ohio's Groundwater","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/gwqcp/rads_ts.pdf"],["Technical Series: Reduction-Oxidation (Redox) Control in Ohio's Groundwater Quality","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/gwqcp/redox_ts.pdf"],["Technical Series: Major Aquifers in Ohio and Associated Water Quality","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/gwqcp/TR_Final_Aquifer-Geochem_Final_11-2015.pdf"],["Special Investigation: Unsafe Water Supply Investigation, Putnam Community Water Association, Devola, Washington County (2011)","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/gwqcp/devola-putnam_investigation.pdf"],["Special Investigation: Investigation of Bacteria in Public Water System Compliance Monitoring Samples, Village of Buckeye Lake, Licking County (2008)","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/gwqcp/BuckeyeLakeFinalReport.pdf"],["Special Investigation: Groundwater Quality Impacts of Infiltration of Partially Treated Wastewater at Catalina MHP, Butler County (2007)","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/gwqcp/CatalinaFinalReport.pdf"],["Special Investigation: Identifying Sensitive Aquifers in Ohio (2007)","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/gwqcp/sensitive_aquifers.pdf"],["Report of Findings Unsafe Water Supply Investigation, Wooster Township, Wayne County (2006)","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/gwqcp/scenic_hts.pdf"],["Ohio Public Water Systems Annual Compliance Report","Report","Report","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/pws/Annual-Compliance-Report.pdf"],["Source Water Assessment and Protection Program Report","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/swapdoc.pdf"],["Steady Implementation of Local Source Water Protection Activities from 2011 to 2015, Fact Sheet","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/2015_SWAP_SurveyResults.pdf"],["Gibsonburg Karst Investigation Report","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/GibsonburgDyeTracesReport_DRAFT_July2011.pdf"],["Clark County Karst Investigation Report","Report","Groundwater","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/swap/ClarkCounty_2007KarstInvestigation_Final.pdf"],["2020 Capacity Assurance Strategy (Triennial Report to the Governor)","Report","Asset Management","PDF","https://epa.ohio.gov/static/Portals/28/documents/pws/2020CAS-TriennialReport.pdf"],["2023 Capacity Assurance Strategy (Triennial Report to the Governor)","Report","Asset Management","PDF","https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/28/documents/pws/2023CAS-TriennialReport.pdf"],["Lead Maps","Map","Lead and copper","Webpage","https://epa.ohio.gov/divisions-and-offices/drinking-and-ground-waters/reports-and-data/lead-lines-mapping"],["Consumer Confidence Report (CCR)","Report","Consumer Confidence Report (CCR)","Webpage","https://epa.ohio.gov/divisions-and-offices/drinking-and-ground-waters/public-water-systems/consumer-confidence-reports"],["Disruption of Service Online Reporting Tool","Report","Disruption of Service","Webpage","https://ohioepa-opa.custhelp.com/web-determinations/startsession/PWSIncident"],["Harmful Algal Bloom Report","Report","Harmful Algal Blooms (HABs)","Webpage","https://survey123.arcgis.com/share/a3ee503e328e4407b39198a4f31552ea?portalUrl=https://geo.epa.ohio.gov/portal"],["Source Water Protection Areas Interactive Map","Map","Groundwater","Webpage","https://epa.ohio.gov/divisions-and-offices/drinking-and-ground-waters/source-water-protection-and-underground-injection-control-(uic)/source-water-assessment-and-protection-program"],["Historical Drinking Water Data (Chemical, Microbiological, Monthly Operating Report Data)","Data","Data","Webpage","https://epa.ohio.gov/divisions-and-offices/drinking-and-ground-waters/guides-manuals/data-reporting-data-received"],["East Palestine Drinking Water Data","Data","Data","Webpage","https://epa.ohio.gov/divisions-and-offices/drinking-and-ground-waters/reports-and-data/ep-drinking-water-results"],["Drinking Water Viewer (Current drinking water data)","Data","Data","Webpage","https://epa.ohio.gov/divisions-and-offices/drinking-and-ground-waters/reports-and-data/drinking-water-viewer"],["Reporting a Cybersecurity Incident","Report","Emergency Preparedness and Security","Webpage","https://epa.ohio.gov/divisions-and-offices/drinking-and-ground-waters/public-water-systems/cybersecurity"],["Ambient Groundwater Monitoring Network Interactive Map","Map","Groundwater","Webpage","https://epa.ohio.gov/divisions-and-offices/drinking-and-ground-waters/source-water-protection-and-underground-injection-control-(uic)/ground-water-quality-characterization-program"],["Luckey Area Water Data","Data","Data","Webpage","https://epa.ohio.gov/divisions-and-offices/drinking-and-ground-waters/reports-and-data/luckey-public-health-and-drinking-water-safety"],["Ohio Integrated Water Quality Monitoring and Assessment Report (Integrated Report)","Report","Groundwater","Webpage","https://epa.ohio.gov/divisions-and-offices/surface-water/reports-data/ohio-integrated-water-quality-monitoring-and-assessment-report"],["Environmental Technology Verification (ETV) Reports for Microcystins Test Kits","Report","Harmful Algal Blooms (HABs)","Webpage","https://nepis.epa.gov/Exe/ZyNET.exe/P100BI15.TXT?ZyActionD=ZyDocument&Client=EPA&Index=2011+Thru+2015&Docs=&Query=&Time=&EndTime=&SearchMethod=1&TocRestrict=n&Toc=&TocEntry=&QField=&QFieldYear=&QFieldMonth=&QFieldDay=&IntQFieldOp=0&ExtQFieldOp=0&XmlQuery=&File=D%3A%5Czyfiles%5CIndex%20Data%5C11thru15%5CTxt%5C00000001%5CP100BI15.txt&User=ANONYMOUS&Password=anonymous&SortMethod=h%7C-&MaximumDocuments=1&FuzzyDegree=0&ImageQuality=r75g8/r75g8/x150y150g16/i425&Display=p%7Cf&DefSeekPage=x&SearchBack=ZyActionL&Back=ZyActionS&BackDesc=Results%20page&MaximumPages=1&ZyEntry=1&SeekPage=x&ZyPURL"],["Guidelines for Design and Sampling for Cyanobacterial Toxin and Taste and Odor Studies in Lakes and Reservoirs, U.S. Geological Survey Scientific Investigations Report (2008)","Report","Harmful Algal Blooms (HABs)","Webpage","https://pubs.acs.org/doi/full/10.1021/es1008938"],["Inorganic Ambient Groundwater Data","Data","Groundwater","XLSX","http://epa.ohio.gov/static/Portals/28/documents/gwqcp/inorganic_xlsx.zip"],["Organic Ambient Groundwater Data","Data","Groundwater","XLSX","http://epa.ohio.gov/static/Portals/28/documents/gwqcp/organic_csv.zip"],[""]],"errors":[],"meta":{"delimiter":",","linebreak":"\r\n","aborted":false,"truncated":false,"cursor":10291}}