Is Leavenworth, KS tap water safe?

Data: U.S. EPA · How we read the data · How we check it

No federal limits exceeded in EPA data for Leavenworth Water Department.

5 public water systems serve parts of Leavenworth. The largest, Leavenworth Water Department, serves 38,757 people. Your water bill names your system.

Largest system

Leavenworth Water Department

38,757 people · Surface water · EPA ID KS2010317

PFAS	Highest average	Limit	Status
PFOA Not detected	–	4 ppt	Not detected
PFOS Not detected	–	4 ppt	Not detected
PFHxS Not detected	–	10 ppt	Not detected
PFNA Not detected	–	10 ppt	Not detected
HFPO-DA (GenX) Not detected	–	10 ppt	Not detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

Lead: 0 ppb at the 90th percentile (Nov 2026, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0

Across Kansas, 3 of 102 water systems EPA tested had PFAS above a 2024 federal limit, and 3 systems were above the lead action level in results from the last five years. Kansas results.

Leavenworth homes and lead pipes

62%

of homes built before 1980 (Kansas 56%, US 50%)

31%

built before 1950 (Kansas 21%)

48%

of households rent (Kansas 33%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for Leavenworth city (tables B25034, B25003). Estimates for small places have a margin of error.

Which system serves your ZIP code

Based on the ZIP codes each system reported serving. Boundaries don't follow ZIP lines exactly, so your water bill is the final word.

System	ZIP codes in Leavenworth
Leavenworth Water Department 38,757 people	66048
Fort Leavenworth American Water Ent LLC 12,934 people	66027

Other water systems serving Leavenworth

Fort Leavenworth American Water Ent LLC
12,934 people · Groundwater · Kansas · reported ZIPs here
Lithium above screening level
Leavenworth County Rural Water District 8
2,500 people · Purchased surface water · Kansas · lists this city
Not in EPA's PFAS sample
Leavenworth County Rural Water District 5C
780 people · Purchased surface water · Kansas · lists this city
Not in EPA's PFAS sample
Leavenworth County Rural Water District 2
483 people · Purchased surface water · Kansas · lists this city
Not in EPA's PFAS sample

How nearby cities compare

City	Main water system	PFAS	Lead (90th pct.)
Kansas City 17 mi Water District 1 of Johnson County	Water District 1 of Johnson County	None above limits	6.48 ppb
Lawrence 31 mi City of Lawrence	City of Lawrence	None above limits	3 ppb
Olathe 31 mi City of Olathe	City of Olathe	None above limits	11 ppb
Gardner 35 mi City of Gardner	City of Gardner	None above limits	3.1 ppb
Topeka 46 mi City of Topeka	City of Topeka	None above limits	1.4 ppb
Manhattan 90 mi City of Manhattan	City of Manhattan	None above limits	0.8 ppb

Questions

Is Leavenworth tap water safe to drink?

Leavenworth Water Department has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Leavenworth, KS?

5 public water systems serve parts of Leavenworth. The largest is Leavenworth Water Department (38,757 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Leavenworth tap water have PFAS?

None detected above EPA's reporting limits. Leavenworth Water Department had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.

Do Leavenworth homes have lead pipes?

Census estimates put 62% of Leavenworth homes as built before 1980 (Kansas: 56%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Leavenworth Water Department's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.