Is Franklin, IN tap water safe?

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

No federal limits exceeded in EPA data for Indiana American Water – Johnson County. 2 PFAS were detected below the limits.

2 public water systems serve parts of Franklin. The largest, Indiana American Water – Johnson County, serves 86,813 people. Your water bill names your system.

Largest system

Indiana American Water – Johnson County

86,813 people · Groundwater · EPA ID IN5241005

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: 2 ppb at the 90th percentile (Dec 2024, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0

Full Indiana American Water – Johnson County results

Across Indiana, 6 of 219 water systems EPA tested had PFAS above a 2024 federal limit, and 6 systems were above the lead action level in results from the last five years. Indiana results.

Franklin homes and lead pipes

35%

of homes built before 1980 (Indiana 55%, US 50%)

16%

built before 1950 (Indiana 21%)

34%

of households rent (Indiana 29%)

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 Franklin city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Franklin

Indiana Masonic Home Water System
654 people · Purchased groundwater · Indiana · lists this city
Not in EPA's PFAS sample

How nearby cities compare

City	Main water system	PFAS	Lead (90th pct.)
Greenwood 8 mi Indiana American Water – Johnson County	Indiana American Water – Johnson County	None above limits	2 ppb
Indianapolis 20 mi Citizens Water – Indianapolis	Citizens Water – Indianapolis	None above limits	3.44 ppb
Columbus 21 mi Columbus Municipal Utility	Columbus Municipal Utility	None above limits	2.74 ppb
Plainfield 22 mi Plainfield Water Works	Plainfield Water Works	None above limits	1.14 ppb
Greenfield 25 mi Greenfield Water Utility	Greenfield Water Utility	None above limits	0.59 ppb
Lawrence 26 mi City of Lawrence Utilities	City of Lawrence Utilities	None above limits	0.76 ppb

Franklin ZIP codes (1)

46131

Questions

Is Franklin tap water safe to drink?

Indiana American Water – Johnson County 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 Franklin, IN?

2 public water systems serve parts of Franklin. The largest is Indiana American Water – Johnson County (86,813 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Franklin tap water have PFAS?

Indiana American Water – Johnson County had 2 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Franklin homes have lead pipes?

Census estimates put 35% of Franklin homes as built before 1980 (Indiana: 55%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Indiana American Water – Johnson County'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.