Kansas drinking water record

Health-based drinking water violations in Kansas, by year
15: 1291291516: 1841841617: 1741741718: 1561561819: 2102101920: 1921922021: 1631632122: 1221222223: 1311312324: 1961962425: 13813825

Busiest year: 2019 (210 violations). Counted by the year the violation period began. Source: EPA SDWIS.

  • Community water systems: 854 active systems serve about 2,872,457 people. 763 of them (89%) serve 3,300 people or fewer; 497 draw mainly on groundwater and 346 on surface water.
  • Health-based violations since 2015: 1,826, at 299 systems (35% of all systems). That share is 32nd of 50 states (1 = lowest).
  • Most common problems: contaminant averages over the limit (1,070); contaminant readings over the limit (391); uncorrected Ground Water Rule deficiencies (135). Source: EPA SDWIS
  • Largest system: Water District 1 of Johnson Co, about 490,000 people, with 0 health-based violations since 2015. Source: EPA SDWIS
  • Housing age: the median Kansas home was built in 1976 (US 1980). Source: US Census Bureau, ACS 2020–2024 (table B25035)
  • Storm damage to water service: NOAA storm narratives mention water mains, boil water notices or lost water service in 1 episodes in Kansas since 2015. Source: NOAA Storm Events Database
  • October 12, 2021, Lincoln (lightning): “Lightning struck the water tower in Sylvan Grove which led to the issuance of a boil water advisory for the town.” Source: NOAA Storm Events Database
The largest water systems in Kansas
SystemPeople servedMain sourceHealth violations since 2015
Water District 1 of Johnson Co490,000Surface water0
Wichita, City Of395,699Surface water0
Kansas City Board of Public Utilities152,960Mixed0
Olathe, City Of143,014Surface water0
Topeka, City Of125,963Surface water1
Lawrence, City Of95,256Surface water0

Source: EPA SDWIS.

Share of water systems with a health-based violation since 2015: Kansas and nearby states
  • Missouri29.2%
  • Kansas35%
  • Colorado37.8%
  • Nebraska39.1%
  • Oklahoma74.9%

Kansas is 2nd of 5 (1 = lowest share). Source: EPA SDWIS.

Checked September 2026.

Who to call in Kansas, city by city

5 Kansas cities on this site and the water utility for each. What to do while you wait is in our water service outage guide.

Frequently asked questions

Is there a water service outage in Kansas right now?

Not on this site: no reports from Kansas in the last 24 hours.

How many public water systems are in Kansas?

EPA records list 854 active community water systems in Kansas, serving about 2,872,457 people. 89% serve 3,300 people or fewer.

How common are drinking water violations in Kansas?

Since 2015, 299 of 854 community water systems in Kansas (35%) have had at least one health-based violation, 1,826 in total.

What is the largest water system in Kansas?

Water District 1 of Johnson Co, which EPA records list as serving about 490,000 people.

Report counts are user-submitted; other figures name their official source. How our data works

Cities in Kansas with Water Service Outages Information

Kansas City

no reports in the last 24 hours · pop. 156,607
Board of Public Utilities (BPU)

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Olathe

no reports in the last 24 hours · pop. 141,290
City of Olathe Utilities

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Overland Park

no reports in the last 24 hours · pop. 195,494
WaterOne (Water District No. 1 of Johnson County)

View Water Service Outages

Topeka

no reports in the last 24 hours · pop. 125,310
City of Topeka Utilities

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Wichita

no reports in the last 24 hours · pop. 397,532
City of Wichita Public Works & Utilities

View Water Service Outages