Side-by-side water intelligence

Compare water intelligence.

Put cities, states, water systems, or ZIP codes next to each other and read the measurable differences. PurityMap never combines them into a single winner or safety verdict.

Compare
Up to 3, side by side. No overall score, rank or verdict. Missing evidence stays missing.
Water systemPLATTEVILLE WATERWORKSWI1220115 · WI
Add a second systemoptional
Identity

Side by side

BasisEach column shows its latest public record. Sample years can differ between columns, so compare with care.

FieldPLATTEVILLE WATERWORKS
SystemPLATTEVILLE WATERWORKS
PlacePlatteville
Population served12,268
Source typeGroundwater
Record updated2026-09-16
Findings on record31
Above a listed reference0
Substance by substance

Where the records differ

Detected results first. Each cell keeps the published result and its record state. “No record” is different from “not detected”.

  • Above a reference
  • Detected, within reference
  • Not detected
  • No record
Substance · referencePLATTEVILLE WATERWORKS
Lead (90th percentile)15 µg/L federal action level10.3µg/LDetected, within reference
Comparison boundary

Continue with one system.

Different monitoring periods, source types and coverage can limit direct comparison. Missing evidence stays missing; it is never scored as favourable, and nothing here is combined into an overall rank or safety verdict.