Area drinking-water PFAS measurements

Massachusetts' live governmental Data Lake API returns sample-level PFAS results by PWS and town with raw-or-finished designation, chemical, collection date, result and qualifiers, units, sample location, analytical method, detection/reporting limits, and contaminant-limit fields. Preserve source-reported limits as context rather than converting them into current compliance or exposure at every address.

North Carolina DEQ's public statewide phase tables identify PWS ID/name, source-water type, population, sample date, county, and six PFAS compound results in ng/L with non-detect notation for 2022 and 2023-2024 monitoring. PWS and county support area reachability; no street-address, parcel, universal-tap, causation, or compliance claim is made.

Indiana DEM's public Phase 3 workbook identifies county, system name and PWSID and supplies lab, sample and facility IDs, sample-point description, raw/finished sample type, collection date, analyte, result or ND notation, units, and source-reported detection and health-advisory/proposed-MCL comparison flags. Preserve the historical 2023 phase and January 2025 update rather than inferring current compliance or conditions at every tap.

Arizona DEQ's public queryable and extractable table returns sample-compound rows with PWS, facility, sample and location identifiers, coordinates, sample and analysis dates, medium/type, compound, concentration, units, notation and qualifiers, reporting and detection limits, collection and analytical methods, and a reported hazard-index field. Preserve the raw hazard field without inferring an undocumented scale or current health-risk conclusion.

EPA's public UCMR5 Data Finder and occurrence files provide final 2023-2025 analytical results for 29 PFAS, searchable or downloadable by state, PWS ID/name, contaminant and source-water context, at one-contaminant, one-PWS-sampling-location/event grain with result notation, units, MRLs and method/health-reference context. Texas, PWS and reported ZIP context establish geographic reachability, but not a service-area polygon, address-level exposure, contamination source, or MCL compliance.

Vermont DEC's open per-WSID report returns system, town and state, system type and population, facility and sample-point identifiers, sample date/type, hazard index, and an 18-compound concentration panel. WSID and Town+State provide explicit geographic reachability, but no service-area polygon, address-level exposure, compliance, or contamination-source claim is supported.

New Jersey's governmental Drinking Water Viewer integration provides standing API/full-file access to raw or untreated-water PFAS samples by water system and sample point, with sample date, analyte, result, and unit. It directly answers raw-water measurement history but does not support finished-water exposure, compliance, method, numeric-limit, or health-comparison claims.

Georgia EPD's public queryable layer identifies a monitored water system by permit number and reports population served, water source, six PFAS concentrations in ppt, and the published hazard index. Preserve the 2023-09-08 layer vintage because the verified inventory does not expose sample collection date, and do not infer currentness, compliance, address-level exposure, causation, or a defined health-risk conclusion.

Maryland MDE's governmental full-file study reports public-water-system name, phase, sample date, PFHxS, PFNA, PFOA, PFOS, and total PFAS. It answers historical measurements at the study grain; sample point, matrix, units, qualifiers, methods, numeric limits, and comparison values are not supported by the cited inventory.

Illinois EPA's public queryable layer returns community-water-supply entry-point records with PWS identity, entry-point identifier, coordinates, seven PFAS compound measurements, compound-specific detection indicators and display text, and units. A buyer can resolve a named PWS or mapped entry point; the cited schema does not document sample date, matrix, method, numeric limits, or health-comparison values, which remain unknown.

Pennsylvania DEP's standing governmental full-file results identify sampled systems by PWSID and entry-point ID and report 18 PFAS compounds for the final 2019-2021 sampling plan. Preserve the study vintage; row-level date, units, non-detect convention, method, numeric limits, and comparison values are not documented by the cited harvest and must not be inferred.

The unauthenticated nationwide ArcGIS layer can be filtered to records whose sampled matrix is explicitly identified as drinking water. Those records return a site or sampled-point label, state, WGS84 point geometry, year, PFOA/PFOS and total-or-reported PFAS concentration context in parts per trillion, and a testing-data link where supplied. Use only explicitly drinking-water records. The Source reports site-level maxima or reported levels and year rather than a public-water-system service area or complete sample-event analytical context, and it does not supply qualifiers, detection limits, methods, health-comparison values, compliance, or tap-level exposure.