Tap Water Quality Report
Tap water quality in LANSDALE, Pennsylvania
Tap water in LANSDALE, Pennsylvania receives a grade of F (47/100) from TapWaterSafety.org. It's served by NORTH PENN WATER AUTHORITY. The most significant water quality concerns are: PFAS contamination; Perfluorohexane sulfonate (PFHXS) significantly above health guideline; Arsenic significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in LANSDALE's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving LANSDALE.
PFAS contamination
Severe concernPerfluorononanoic acid (PFNA), Perfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 0.867 ppt, 867x above the EWG health guideline of 0.001 ppt.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 2.58 ppb, 646x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 17.0 ppb, 284x above the EWG health guideline of 0.06 ppb.
EPA compliance record
Official U.S. EPA records for NORTH PENN WATER AUTHORITY (system ID PA1460034) 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 LANSDALE
Filters matched to the specific contaminants in LANSDALE's water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
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 LANSDALE'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 |
|---|---|---|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) PFAS |
6.03 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | EPA violation |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.867 ppt | 0.001 | 10.0 | — | — | — | — | 867× over |
| Arsenic Heavy metal |
2.58 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 646× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
17.0 ppb | 0.06 | — | — | — | — | — | 284× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
31.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 209× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
17.5 ppb | 0.1 | 60.0 | 60 | — | — | — | 175× over |
| Perfluorononanoic acid (PFNA) PFAS |
0.611 ppt | 0.006 | 10.0 | — | — | — | — | 102× over |
| Bromodichloromethane Disinfection byproduct |
5.88 ppb | 0.06 | — | — | — | — | — | 98× over |
| Trichloroacetic acid Disinfection byproduct |
6.73 ppb | 0.1 | — | — | — | — | — | 67× over |
| Chloroform Disinfection byproduct |
23.2 ppb | 0.4 | — | — | — | — | — | 58× over |
| Dichloroacetic acid Disinfection byproduct |
10.3 ppb | 0.2 | — | — | — | — | — | 52× over |
| Dibromochloromethane Disinfection byproduct |
2.19 ppb | 0.1 | — | — | — | — | — | 22× over |
| Nitrate Inorganic |
2.65 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 19× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
3.24 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 11× over |
| Radium, combined (-226 and -228) Radiological |
0.37 pCi/L | 0.05 | 5.0 | — | — | — | — | 7.4× over |
| Dibromoacetic acid Disinfection byproduct |
0.187 ppb | 0.03 | — | — | — | — | — | 6.2× over |
| Chromium (hexavalent) Heavy metal |
0.0994 ppb | 0.02 | — | — | — | — | — | 5.0× over |
| Uranium Radiological |
1.55 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 3.6× over |
| Tetrachloroethylene (perchloroethylene) Volatile organic compound |
0.0548 ppb | 0.06 | 5.0 | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
146.0 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
177.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.035 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Manganese Heavy metal |
9.19 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Bromoform Disinfection byproduct |
0.0427 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
2.39 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Bromochloromethane Other |
0.00267 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.852 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.281 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
3.19 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
2.66 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
3.39 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| 1,1-Dichloroethane Volatile organic compound |
0.00433 ppb | 3.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
0.567 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.655 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chlorodifluoromethane Other |
0.007 ppb | — | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
0.0833 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.0762 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
8.51 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 NORTH PENN WATER AUTHORITY.