Water Quality Report · Updated October 07, 2026
NORTH PENN WATER AUTHORITY
NORTH PENN WATER AUTHORITY delivers tap water graded F (47/100) by TapWaterSafety.org. The utility serves approximately 91,941 residents in LANSDALE, Pennsylvania using surface water (purchased). 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. For questions, the utility can be reached at 215-855-3617.
Is LANSDALE tap water safe to drink?
NORTH PENN WATER AUTHORITY delivers tap water that earns a grade of F (47/100) from TapWaterSafety.org — a poor rating, with significant contamination concerns and/or recent violations.
The utility serves 91,941 residents in LANSDALE, drawing from surface water (purchased).
Public testing data identifies 18 contaminants in this water above EWG's health-based guidelines, including: Perfluorooctanoic acid (PFOA), Perfluorohexane sulfonate (PFHXS), Arsenic, Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Haloacetic acids (HAA5), Perfluorononanoic acid (PFNA), Bromodichloromethane, Trichloroacetic acid, Chloroform, Dichloroacetic acid, Dibromochloromethane, Nitrate, Perfluorooctane sulfonate (PFOS), Radium, combined (-226 and -228), Dibromoacetic acid, Chromium (hexavalent), Uranium. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
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.
Quick actions for LANSDALE residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for NORTH PENN WATER AUTHORITY.
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.
Contact NORTH PENN WATER AUTHORITY
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for LANSDALE
Filters matched to the specific contaminants in this 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.
Score breakdown
This utility's overall score of 47/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
NORTH PENN WATER AUTHORITY service area
This water system serves 1 community in Montgomery County, Pennsylvania. Click any city for its dedicated tap water quality page.
Find the right filter for LANSDALE water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.