Water Health Check Report

Baltimore, MD

City Of Baltimore · Surface water source

92

Excellent

0 EPA violations
1 above EWG guideline

Score methodology →
EPA · MD0300002UCMR5 PFAS data included1,600,000 people servedLast updated Dec 2024
EPA SDWIS · December 2024EPA UCMR5 · November 2024

Excellent — with 1 concern

City Of Baltimore meets all federal legal limits but 1 contaminant exceeds EWG health guidelines. All contaminants within federal legal limits

All contaminants within federal legal limits

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Lead—source matters

Lead in tap water comes from household plumbing, not the source water or treatment plant. Baltimore water leaves the treatment plant lead-free. Risk depends on your building's internal plumbing—highest in homes built before 1986, when lead solder was common. A NSF/ANSI 53 certified pitcher or under-sink filter removes lead at point of use.

Contaminants tested

28 total · 1 above EWG guideline
ContaminantLevelStatus
Lead

CAS 7439-92-1

2.7 ppb
Above guideline
3.0 ppt
Within limits
Copper

CAS 7440-50-8

ND ppm
Within limits
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
Lithium

CAS 7439-93-2

ND
Not detected
ND
Not detected
ND
Not detected
LegendWithin limitsAbove EWG guidelineAbove EPA limitNot detectedSource: EPA SDWIS · UCMR5 · EWG Health Guidelines

Filter recommendation

1 contaminant above guidelines. Here's what removes it.

A guided 4-question flow matches you to the right filter for your setup, budget, and household.

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Water wellness · Drawn Health

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Data sources

EPA UCMR5 (PFAS + lithium)·November 2024·One-time programme 2023–2025
EPA SDWIS compliance data·December 2024·Annual reporting cycle

Status flags compare detected levels against both EPA legal limits and EWG health-based guidelines—which are stricter and science-derived, independent of political feasibility.