Tap Water Results

Is Rexburg, ID tap water safe?

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

Summary

No federal limits exceeded in EPA data for City of Rexburg.

3 public water systems serve parts of Rexburg. The largest, City of Rexburg, serves 40,695 people. Your water bill names your system.

Largest system

City of Rexburg

40,695 people · Groundwater · EPA ID ID7330022

PFASHighest averageLimitStatus
PFOA
Not detected
–4 pptNot detected
PFOS
Not detected
–4 pptNot detected
PFHxS
Not detected
–10 pptNot detected
PFNA
Not detected
–10 pptNot detected
HFPO-DA (GenX)
Not detected
–10 pptNot 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: 1

Across Idaho, 2 of 61 water systems EPA tested had PFAS above a 2024 federal limit, and 1 system were above the lead action level in results from the last five years. Idaho results.

Rexburg homes and lead pipes

21%
of homes built before 1980 (Idaho 39%, US 50%)
2%
built before 1950 (Idaho 11%)
77%
of households rent (Idaho 28%)

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

Other water systems serving Rexburg

  • Hillview Subdivision
    50 people · Groundwater · Idaho · lists this city
    Coliform bacteria violations
  • Syringa Park Subdivision
    35 people · Groundwater · Idaho · lists this city
    Not in EPA's PFAS sample

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Idaho Falls 26 mi
City of Idaho Falls
City of Idaho FallsNone above limits3 ppb
Pocatello 74 mi
City of Pocatello
City of PocatelloNone above limits5 ppb
Twin Falls 159 mi
City of Twin Falls
City of Twin FallsNone above limits0 ppb
Boise City 222 mi
Veolia Water Idaho
Veolia Water IdahoNone above limits2 ppb
Eagle 227 mi
Veolia Water Idaho
Veolia Water IdahoNone above limits2 ppb
Meridian 230 mi
Veolia Water Idaho
Veolia Water IdahoNone above limits2 ppb
Rexburg ZIP codes (2)
  • 83440
  • 83460

Questions

Is Rexburg tap water safe to drink?

City of Rexburg had 1 health-based violation 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 Rexburg, ID?

3 public water systems serve parts of Rexburg. The largest is City of Rexburg (40,695 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Rexburg tap water have PFAS?

None detected above EPA's reporting limits. City of Rexburg 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 Rexburg homes have lead pipes?

Census estimates put 21% of Rexburg homes as built before 1980 (Idaho: 39%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. City of Rexburg'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.