Tap Water Quality Report
Tap water quality in LAWRENCE, Kansas
Tap water in LAWRENCE, Kansas receives a grade of C (78/100) from TapWaterSafety.org. It's served by LAWRENCE, CITY OF. The most significant water quality concerns are: Perfluorohexane sulfonate (PFHXS) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in LAWRENCE's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving LAWRENCE.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 1.86 ppt, 1863x above the EWG health guideline of 0.001 ppt.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 33.3 ppb, 555x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 49.8 ppb, 332x above the EWG health guideline of 0.15 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.225 ppb.
EPA compliance record
Official U.S. EPA records for LAWRENCE, CITY OF (system ID KS2004503) for the last 3 years. Checked 2026-10-07.
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 LAWRENCE
Filters matched to the specific contaminants in LAWRENCE's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
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 LAWRENCE'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 |
|---|---|---|---|---|---|---|---|---|
| Perfluorohexane sulfonate (PFHXS) PFAS |
1.86 ppt | 0.001 | 10.0 | — | — | — | — | 1863× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
33.3 ppb | 0.06 | — | — | — | — | — | 555× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
49.8 ppb | 0.15 | 80.0 | 100 | — | — | — | 332× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
25.1 ppb | 0.1 | 60.0 | 60 | — | — | — | 251× over |
| Chromium (hexavalent) Heavy metal |
1.15 ppb | 0.02 | — | — | — | — | — | 57× over |
| Arsenic Heavy metal |
0.225 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 56× over |
| Nitrate Inorganic |
0.258 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.8× over |
| Chlorate Disinfection byproduct |
350.0 ppb | 210.0 | — | — | — | — | — | 1.7× over |
| Atrazine Pesticide/Herbicide |
0.123 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Fails EU |
| Vanadium Other |
2.37 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
50.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
2.44 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Selenium Heavy metal |
0.817 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Strontium Radiological |
38.2 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
14.3 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| 2,4-D Pesticide/Herbicide |
0.129 ppb | 20.0 | 70.0 | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
2.78 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.165 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Xylenes (total) Volatile organic compound |
0.0229 ppb | 1800.0 | 10000.0 | — | — | — | — | Below guideline |
| Bromide Other |
39.8 ppb | — | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
1.46 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.431 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
11.2 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 LAWRENCE, CITY OF.