Drinking water quality · 2024
· Verified
What's in Lafayette, LA tap water
10 contaminants were measured in the Lafayette, LA water system's 2024 annual report. Each is shown below against its federal limit.
- Reporting year
- 2024
- Contaminants measured
- 10
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- LA
PFAS — EPA UCMR5 (2023–2025)
1 PFAS compound detected in Lafayette, LA
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
Lithium
● Detected (no federal limit)below national p90 (76.59999999999991 mg/L across detecting U.S. systems)
Where your water comes from · EPA SDWIS
Lafayette, LA's drinking water comes from ground water, drawn from 19 sources.
Source
- SWTP WELL #1 - EAST SIDE - NORTHEAST
- SWTP WELL #2 - EAST SIDE - SOUTHWEST
- SWTP WELL #3 - WEST SIDE - NORTH WELL
- SWTP WELL #4 - WEST SIDE - SOUTH WELL
- + 15 more
Treatment
- SWTP TREATMENT PLANT #2
- SOUTH PARK TREATMENT PLANT #3
- NWTP TREATMENT PLANT #1
- + 1 more
Distribution
Historical readings · EPA Six-Year Review (2012–2019)
1 contaminant historically over EPA limits in Lafayette, LA
Every U.S. public water system reports compliance-monitoring data to EPA. The Six-Year Review releases the 2012–2019 window as a single dataset — here's what your system reported, year by year. Values shown are the highest detection per analyte per year, compared to the federal MCL.
| Contaminant | Worst detection | EPA limit | Years (2012–2019) |
|---|---|---|---|
GROSS BETA worst: 2015 | 4.83 mrem/yr 1.2× | 4 mrem/yr | '15'16'17'18'19 |
DEHP worst: 2012 | 0.0051 mg/L 85% | 0.006 mg/L | '12'13'14'15 |
RADIUM 226 228 worst: 2018 | 2.74 pCi/L within near national p90 | 5 pCi/L | '15'16'17'18'19 |
HAA5 worst: 2014 | 0.0202 mg/L within | 0.06 mg/L | '12'13'14'15'16'17'18'19 |
TTHM worst: 2017 | 0.0236 mg/L within | 0.08 mg/L | '12'13'14'15'16'17'18'19 |
ARSENIC worst: 2012 | 0.002 mg/L within below national p90 | 0.01 mg/L | '12'13'14'15'16'17'18 |
SELENIUM worst: 2012 | 0.01 mg/L within | 0.05 mg/L | '12 |
BARIUM worst: 2015 | 0.37 mg/L within above national p90 | 2 mg/L | '15'16'19 |
FLUORIDE worst: 2015 | 0.32 mg/L within | 4 mg/L | '12'13'14'15'16'17'18'19 |
CHROMIUM worst: 2018 | 0.006 mg/L within near national p90 | 0.1 mg/L | '18 |
NITRATE NITRITE worst: 2018 | 0.5 mg/L within | 10 mg/L | '15'16'17'18 |
P DICHLOROBENZENE worst: 2012 | 0.00173 mg/L within | 0.075 mg/L | '12'15 |
OXAMYL worst: 2015 | 0.0016 mg/L within | 0.2 mg/L | '15 |
ENDRIN worst: 2018 | 0.000014 mg/L within | 0.002 mg/L | '18 |
COPPER worst: 2013 | 0.8 mg/L near national p90 | — | '13'15'16 |
LEAD worst: 2013 | 0.011 mg/L | — | '13'15'16'19 |
DBAA worst: 2012 | 0.0032 mg/L | — | '12'13'14'15'16'17'18'19 |
DCAA worst: 2013 | 0.0023 mg/L | — | '13'15'16'17'18'19 |
MBAA worst: 2018 | 0.00058 mg/L | — | '18'19 |
MCAA worst: 2013 | 0.015 mg/L | — | '13'14'15'16 |
TCAA worst: 2012 | 0.0021 mg/L | — | '12'13'14'15'16'17'18'19 |
BROMODICHLOROMETHANE worst: 2012 | 0.0054 mg/L | — | '12'13'14'15'16'17'18'19 |
BROMOFORM worst: 2012 | 0.003 mg/L | — | '12'13'14'15'16'17'18'19 |
CHLOROFORM worst: 2012 | 0.0036 mg/L | — | '12'13'14'15'16'17'18'19 |
DIBROMOCHLOROMETHANE worst: 2012 | 0.0068 mg/L | — | '12'13'14'15'16'17'18'19 |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 1.69Running annual avgSystem-wide | 4MRDL | Within the limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 2.1MaximumLus | 5MCL | Within the limit |
People also ask about Lafayette, LA's water
+Is Lafayette, LA tap water safe to drink in 2024?
Every one of the 10 contaminants measured in Lafayette, LA's 2024 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in Lafayette, LA tap water?
10 contaminants were measured in Lafayette, LA's 2024 Consumer Confidence Report, spanning metals, disinfection byproducts, and radionuclides. 10 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Where does the data on this page come from?
Every value is transcribed from Lafayette, LA's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Lafayette, LA's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2024 report; a new report will replace it once the utility publishes its next annual update.