TapGraded
C

MCWA

Rochester, NY · 525,262 served

MCWA serves 525,262 people in Rochester, NY. It has 1 health-based violation in the last 5 years. TapGraded gives this system a C.

Score breakdown

Health-based violations (5y)

1

Monitoring violations (5y)

0

Currently unaddressed

1

Overall score

75/100

Violation history (last 5 years)

2025
Health-based Monitoring / reporting

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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 4 ppb
0 ppb EPA action level: 15 ppb

PFAS (UCMR5 occurrence data)

PFNA (not detected) 0 ppt
0 ppt EPA MCL: 10 ppt
PFHxS (not detected) 0 ppt
0 ppt EPA MCL: 10 ppt
PFOS (not detected) 0 ppt
0 ppt EPA MCL: 4 ppt
HFPO-DA (not detected) 0 ppt
0 ppt EPA MCL: 10 ppt
PFOA (not detected) 0 ppt
0 ppt EPA MCL: 4 ppt

System details

System type
Community water system
Water source
Surface water
Ownership
Public/private mix
Service connections
178,932

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Frequently asked questions

Is Rochester, NY tap water safe to drink?

MCWA has 1 health-based violation in the last 5 years. TapGraded gives this system a C.

Does MCWA have lead in its water?

The most recent 90th-percentile lead sample is 4 ppb, versus the EPA action level of 15 ppb.

Has PFAS been detected in MCWA's water?

This system was tested under UCMR5 and no PFAS was detected above the reporting limit in the analytes we track.

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