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.

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Up to 3, side by side. No overall score, rank or verdict. Missing evidence stays missing.
Water systemLANCASTER COUNTY W&SD (SC2920001)SC2920001 · SC
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BasisEach column shows its latest public record. Sample years can differ between columns, so compare with care.

FieldLANCASTER COUNTY W&SD (SC2920001)
SystemLANCASTER COUNTY W&SD (SC2920001)
PlaceLancaster County W Sd (sc2920001)
Population served79,107
Source typeSurface Water
Record updated2026-10-15
Findings on record32
Above a listed reference1
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 · referenceLANCASTER COUNTY W&SD (SC2920001)
E. coliFederal MCLAbove a reference
Perfluorohexanoic acid (PFHxA)400000.0 ng/L Michigan EGLE state MCL (strictest US state)6.6ng/LDetected, within reference
Perfluoropentanoic acid (PFPeA)No federal or state limit; shown for transparency7.2ng/LDetected, no limit
Lead (90th percentile)15 µg/L federal action level5µg/LDetected, within reference
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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.