TapGraded
A

COBB CO.-MARIETTA WATER AUTH.

Marietta, GA 0

COBB CO.-MARIETTA WATER AUTH. serves 0 people in Marietta, GA. It has 0 health-based violations in the last 5 years. TapGraded gives this system an A.

Score breakdown

Health-based violations (5y)

0

Monitoring violations (5y)

0

Currently unaddressed

0

Overall score

100/100

Violation history (last 5 years)

No violations on record.

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Lead (Lead and Copper Rule)

EPA's current lead action level is 15 ppb (dropping to 10 ppb in 2027 under the Lead and Copper Rule Improvements).

90th-percentile lead sample 2.9 ppb
0 ppb EPA action level: 15 ppb

PFAS (UCMR5 occurrence data)

This system was not required to sample under UCMR5 (systems serving fewer than 3,300 people are mostly exempt).

System details

System type
Community water system
Water source
Surface water
Ownership
Local government
Service connections
11

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Frequently asked questions

Is Marietta, GA tap water safe to drink?

COBB CO.-MARIETTA WATER AUTH. has 0 health-based violations in the last 5 years. TapGraded gives this system an A.

Does COBB CO.-MARIETTA WATER AUTH. have lead in its water?

The most recent 90th-percentile lead sample is 2.9 ppb, versus the EPA action level of 15 ppb.

Has PFAS been detected in COBB CO.-MARIETTA WATER AUTH.'s water?

This system was not required to sample under UCMR5 (systems serving fewer than 3,300 people are mostly exempt).

Source: EPA SDWIS/ECHO · Data as of 2026Q2