TapGraded
A

KNOX-CHAPMAN UTILITY DISTRICT

Knoxville, TN · 41,311 served

KNOX-CHAPMAN UTILITY DISTRICT serves 41,311 people in Knoxville, TN. 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)

2

Currently unaddressed

0

Overall score

96/100

Violation history (last 5 years)

2024
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 3.6 ppb
0 ppb EPA action level: 15 ppb

PFAS (UCMR5 occurrence data)

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

System details

System type
Community water system
Water source
Surface water
Ownership
Local government
Service connections
17,213

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Frequently asked questions

Is Knoxville, TN tap water safe to drink?

KNOX-CHAPMAN UTILITY DISTRICT has 0 health-based violations in the last 5 years. TapGraded gives this system an A.

Does KNOX-CHAPMAN UTILITY DISTRICT have lead in its water?

The most recent 90th-percentile lead sample is 3.6 ppb, versus the EPA action level of 15 ppb.

Has PFAS been detected in KNOX-CHAPMAN UTILITY DISTRICT'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