Tap Water Quality Report
Tap water quality in LAFAYETTE, Indiana
Tap water in LAFAYETTE, Indiana receives a grade of B (82/100) from TapWaterSafety.org. It's served by LAFAYETTE WATER WORKS. The most significant water quality concerns are: Arsenic significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in LAFAYETTE's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving LAFAYETTE.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 0.55 ppb, 138x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 4.04 ppb, 67x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 3.85 ppb, 39x above the EWG health guideline of 0.1 ppb.
EPA compliance record
Official U.S. EPA records for LAFAYETTE WATER WORKS (system ID IN5279013) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Revised Total Coliform Rule | Missed reporting | 01/01/2026 | Open |
| Ground Water Rule | Missed testing or reporting | 07/13/2025 | Open |
| Revised Total Coliform Rule | Missed testing | 07/01/2025 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for LAFAYETTE
Filters matched to the specific contaminants in LAFAYETTE's water supply.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in LAFAYETTE's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
0.55 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 138× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
4.04 ppb | 0.06 | — | — | — | — | — | 67× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
3.85 ppb | 0.1 | 60.0 | 60 | — | — | — | 39× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
2.98 ppb | 0.15 | 80.0 | 100 | — | — | — | 20× over |
| Nitrate Inorganic |
0.706 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 5.0× over |
| Manganese Heavy metal |
252.3 ppb | 100.0 | — | 50 | 80 | — | — | Fails EU |
| Chlorate Disinfection byproduct |
155.0 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Trichloroethylene Volatile organic compound |
0.248 ppb | 0.4 | 5.0 | 10 | 20 | 1.7 | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.183 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Barium Heavy metal |
133.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
4.15 ppb | 40.0 | — | — | — | — | — | Below guideline |
| 1,1-Dichloroethane Volatile organic compound |
0.12 ppb | 3.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.254 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| 1,1,1-Trichloroethane Other |
0.237 ppb | — | 200.0 | — | — | — | — | Below guideline |
| Chlorodifluoromethane Other |
0.025 ppb | — | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.276 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
10.8 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from LAFAYETTE WATER WORKS.