PurityMap
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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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Water systemSOUTH GATE-CITY, WATER DEPT.CA1910152 · CA
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BasisEach column shows its latest public record. Sample years can differ between columns, so compare with care.

FieldSOUTH GATE-CITY, WATER DEPT.
SystemSOUTH GATE-CITY, WATER DEPT.
PlaceSouth Gate
Population served76,443
Source typeSurface Water
Record updated2026-09-16
Findings on record31
Above a listed reference2
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 · referenceSOUTH GATE-CITY, WATER DEPT.
Perfluorooctanoic acid (PFOA)4.0 ng/L federal MCL (2024)10ng/LAbove a reference
Perfluorooctanesulfonic acid (PFOS)4.0 ng/L federal MCL (2024)26ng/LAbove a reference
Perfluorobutanesulfonic acid (PFBS)2000.0 ng/L EPA health advisory (screening, not a legal limit)3.9ng/LDetected, within reference
Perfluorohexanoic acid (PFHxA)400000.0 ng/L Michigan EGLE state MCL (strictest US state)6.1ng/LDetected, within reference
Perfluorohexanesulfonic acid (PFHxS)10.0 ng/L federal MCL (2024)6ng/LDetected, within reference
Perfluoropentanoic acid (PFPeA)No federal or state limit; shown for transparency6.3ng/LDetected, no limit
Comparison boundary

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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.

SOUTH GATE-CITY, WATER DEPT. →