Is Gaithersburg tap water safe to drink?
Yes but with caveats
Gaithersburg's water meets EPA minimum standards but has some concerns including PFAS detected. Filtration is recommended for sensitive individuals.
3 Issues Detected in Gaithersburg
PFAS (Forever Chemicals) Detected
PFAS are man-made chemicals that do not break down and accumulate in the body.
PFAS details for GaithersburgModerate Chlorine Level
Chlorine within EPA limits but may affect taste.
Chlorine info for Gaithersburg208,772,087,820,879 · Potomac River via WSSC
Gaithersburg PFAS Water Analysis (2026)
This 2026 analysis examines Gaithersburg's water supply with a focus on PFAS exposure, hardness, and overall safety. Data is sourced from EPA SDWIS, EWG, and Washington Suburban Sanitary Commission consumer confidence reports.
Water Quality Data
Contaminant Levels
Health Insights
- 1PFAS have been identified in Gaithersburg's water at 1.8 parts per trillion. A reverse osmosis system is the most reliable home treatment.
- 2Chlorine levels may affect the taste of Gaithersburg's tap water. A carbon filter improves flavor.
Score
Gaithersburg tap water is sourced from Potomac River via WSSC and treated by Washington Suburban Sanitary Commission. PFAS forever chemicals have been detected. Overall purity score: 67/100 (Moderate). Updated for 2026.
MATCHED TO GAITHERSBURG'S WATER DATA
Best Water Filters for Gaithersburg, MD (2026)
Matched to PFAS Detected, Moderate Chlorine in Gaithersburg.
Clearly Filtered Water Pitcher
Pitcher Filter
$80-95
Why this fits Gaithersburg
- Removes 99%+ of PFAS detected in Gaithersburg's water
- Eliminates chlorine taste and odor from Gaithersburg's water
- NSF/ANSI 42 + NSF/ANSI 53 + NSF/ANSI 401 certified
Waterdrop G3P800 Tankless RO
Tankless Reverse Osmosis
$380-450
Why this fits Gaithersburg
- Removes 99%+ of PFAS detected in Gaithersburg's water
- Eliminates chlorine taste and odor from Gaithersburg's water
- NSF/ANSI 58 + NSF 372 certified
APEC Water Systems ROES-50
Under-Sink Reverse Osmosis
$195-220
Why this fits Gaithersburg
- Removes 99%+ of PFAS detected in Gaithersburg's water
- Eliminates chlorine taste and odor from Gaithersburg's water
- NSF/ANSI 58 certified
Waterdrop 10UA Under-Sink Filter
Under-Sink Carbon Filter
$40-60
Why this fits Gaithersburg
- Eliminates chlorine taste and odor from Gaithersburg's water
- NSF/ANSI 42 certified
- Budget-friendly at $40-60
As an Amazon Associate, PurityMap may earn from qualifying purchases. Based on latest Gaithersburg water data.
Know exactly what's in YOUR tap
City data shows averages. Your home may differ.
Test Your Water — $25-30About Gaithersburg's Water
Understanding PFAS in Gaithersburg's Water Supply
PFAS (per- and polyfluoroalkyl substances) are a class of synthetic chemicals used in industrial and consumer products since the 1940s. Testing identified PFAS compounds in Gaithersburg's water at 1.8 parts per trillion. These chemicals resist breakdown in the environment and the human body, which is why they're sometimes called forever chemicals. The EPA has established health advisories for several PFAS compounds. A certified reverse osmosis system removes 99% or more of PFAS from drinking water and is currently the most reliable home treatment option.
Explore Gaithersburg Water Data
Gaithersburg Water FAQ
Is Gaithersburg MD tap water safe to drink in 2026?
Does Gaithersburg MD use chlorine or chloramine for disinfection?
How hard is Gaithersburg MD water and what is the TDS level?
Has PFAS been found in Gaithersburg MD drinking water?
Nearby Reports
Compare across all 50 US states
Data Sources
- EPA SDWIS
- EWG Tap Water Database
- Washington Suburban Sanitary Commission CCR
- USGS monitoring data
PurityMap compiles public data. Updated March 2026.