Tap Water Results

Is Slidell, LA 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 Slidell Water Supply.

4 public water systems serve parts of Slidell. The largest, City of Slidell Water Supply, serves 35,547 people. Your water bill names your system.

Largest system

City of Slidell Water Supply

35,547 people · Groundwater · EPA ID LA1103041

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: 0 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 Louisiana, 1 of 263 water systems EPA tested had PFAS above a 2024 federal limit, and 4 systems were above the lead action level in results from the last five years. Louisiana results.

Slidell homes and lead pipes

54%
of homes built before 1980 (Louisiana 46%, US 50%)
5%
built before 1950 (Louisiana 10%)
32%
of households rent (Louisiana 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 Slidell city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Slidell

  • Bayou Liberty Water Association
    10,791 people · Groundwater · Louisiana · reported ZIPs here
    No PFAS above limits
  • Magnolia-Eden Isles Water System
    10,155 people · Groundwater · Louisiana · reported ZIPs here
    Lithium above screening level
  • Magnolia-Resolve Whisperwood Water System
    6,867 people · Groundwater · Louisiana · reported ZIPs here
    No PFAS above limits

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
New Orleans 19 mi
New Orleans Carrollton Water Works
New Orleans Carrollton Water WorksNone above limits6 ppb
Kenner 34 mi
East Jefferson Water Works District 1
East Jefferson Water Works District 1None above limits2.65 ppb
Central 77 mi
Baton Rouge Water Company
Baton Rouge Water CompanyNone above limits1 ppb
Baton Rouge 81 mi
Baton Rouge Water Company
Baton Rouge Water CompanyNone above limits1 ppb
Lafayette 134 mi
Lafayette Utilities Water System
Lafayette Utilities Water SystemNone above limits0 ppb
Alexandria 174 mi
City of Alexandria Water System
City of Alexandria Water SystemNone above limits2 ppb
Slidell ZIP codes (1)
  • 70458

Questions

Is Slidell tap water safe to drink?

City of Slidell Water Supply 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 Slidell, LA?

4 public water systems serve parts of Slidell. The largest is City of Slidell Water Supply (35,547 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Slidell tap water have PFAS?

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

Census estimates put 54% of Slidell homes as built before 1980 (Louisiana: 46%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. City of Slidell Water Supply'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.