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Johnson County Water Quality

Johnson County, Kansas

Water Grade

A

Water Score

71.3

Violations

3

State Rank

#35

of 105 (1 = best)

Water Quality Details

Water Quality Grade

A

Based on EPA compliance history and violation data

Water Score

71.3/100

Higher = better quality

Health Violations

3

Health-based violations

Violation Rate

0.4%

Systems with violations

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Frequently Asked Questions

What is the water quality in Johnson County, Kansas?
Johnson County, Kansas has a water quality grade of A with a score of 71.3/100, based on EPA Safe Drinking Water Information System data. The county has 3 health-based drinking water violations on record.
Are there any water violations in Johnson County?
Johnson County has 3 health-based drinking water violations recorded by the EPA. Health-based violations indicate instances where contaminant levels exceeded EPA Maximum Contaminant Levels (MCLs). Violations may have been resolved — check with your local water utility for current status.
How does Johnson County water compare to the Kansas average?
Johnson County's water quality score of 71.3/100 is higher than the Kansas state average of 42.6. The average water quality grade across Kansas is D, based on data from 105 counties with available water quality data.
Is tap water safe to drink in Johnson County?
Based on EPA data, Johnson County has a water quality grade of A (71.3/100). This indicates good to excellent water quality with strong compliance. For the most up-to-date information, contact your local water utility or review your Consumer Confidence Report (CCR).
Does Johnson County have clean drinking water?
Johnson County has 3 health-based drinking water violations according to EPA records. With a water quality score of 71.3/100 and grade A, the county's drinking water has had some compliance issues but continues to be monitored. For the most current safety information, check with your local water utility.
How does Johnson County rank for water quality in Kansas?
Johnson County ranks #35 out of 105 counties in Kansas by water quality score (1 = best). With a score of 71.3/100, it falls in the top third of counties statewide. Rankings are based on EPA Safe Drinking Water Information System (SDWIS) data including health-based violations and compliance records.

Counties with Similar Water Quality

Saline County

Kansas

B

67.8

Water score

Riley County

Kansas

B

65.6

Water score

Neosho County

Kansas

C

60.8

Water score

Data Source

Water quality data sourced from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.

Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.

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