Water & Air Quality in New Hampshire
Regional composite data for PFAS, lead, and PM2.5 in New Hampshire. Values are derived from EPA UCMR 5, EWG Tap Water Database, and AirNow annual averages. Check your specific ZIP code below for localized results.
PFAS
Lead
PM2.5
New Hampshire Context
Pease AFB + Saint-Gobain sites drive elevated PFAS statewide; air quality is otherwise excellent.
Check Your Specific ZIP Code in New Hampshire
State averages mask wide local variation. Your ZIP code may be significantly cleaner or more contaminated than the state composite — especially near industrial sites, military bases, or older housing stock.
Audit New Hampshire ZIP 03801 →Or go to the home page and enter any New Hampshire ZIP code.
What These Numbers Mean for New Hampshire Residents
PFAS in New Hampshire Drinking Water
New Hampshire's regional PFAS composite is 6.4 parts per trillion (ppt), which exceeds the EPA's 2024 enforceable limit of 4 ppt for PFOA and PFOS. Water utilities in New Hampshire have until 2029 to comply. In the interim, a point-of-use reverse osmosis filter (NSF 58 certified) removes 95%+ of PFAS at the tap.
Lead in New Hampshire Tap Water
Lead contamination in New Hampshire averages 4.8 ppb at the 90th percentile. This is within the EPA's action level but above the zero health goal. Lead pipes in pre-1986 homes remain the primary risk factor — consider an NSF 53-certified filter as a precaution.
PM2.5 Air Quality in New Hampshire
New Hampshire's annual average PM2.5 is 6 µg/m³. This is below both the EPA annual standard (9 µg/m³) and approaches the WHO guideline (5 µg/m³). Running a HEPA air purifier indoors can bring indoor air below the WHO threshold even in areas with clean outdoor air.
Filtration Recommendations for New Hampshire
- PFAS concern: AquaTru Countertop RO (NSF 58) removes >95% of PFAS — the most effective countertop option. Shop AquaTru →
- Lead concern: Any NSF 53-certified carbon block filter removes lead at the tap. An RO system covers both PFAS and lead. Shop Berkey →
New Hampshire Water & Air Resources
Want to go deeper? Read our evidence-based articles on PFAS health effects, water filter comparisons, and PM2.5 air quality. Or audit your specific ZIP code for localized results.