Safe Drinking Water Information System violations for the city public water system (Ashland, OR4100728). System-level — the same value across every tract the PWS serves — so it maps as a uniform layer over the service area: 31 violations on record, all resolved (0 open).
data/still/raw/), the source of truth (ADR-0023). Source: https://www.epa.gov/ground-water-and-drinking-water. Layer: layer.geojson; combined score: /poc/; scoring trace: /lab/.