Water & Air Quality in Maine
Regional composite data for PFAS, lead, and PM2.5 in Maine. 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
Maine Context
Statewide PFAS investigation tied to land-application of biosolids; air remains clean.
Check Your Specific ZIP Code in Maine
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 Maine ZIP 04101 →Or go to the home page and enter any Maine ZIP code.
What These Numbers Mean for Maine Residents
PFAS in Maine Drinking Water
Maine's regional PFAS composite is 5 parts per trillion (ppt), which exceeds the EPA's 2024 enforceable limit of 4 ppt for PFOA and PFOS. Water utilities in Maine 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 Maine Tap Water
Lead contamination in Maine averages 6.3 ppb at the 90th percentile. This is at or above concerning levels. Homes built before 1986 face the highest risk from lead service lines and solder. An NSF 53-certified under-sink filter or reverse osmosis system removes lead at the tap.
PM2.5 Air Quality in Maine
Maine's annual average PM2.5 is 6.4 µg/m³. This meets the EPA annual standard (9 µg/m³) but exceeds the stricter WHO guideline of 5 µg/m³. A HEPA air purifier in sleeping areas is recommended, particularly for children and people with respiratory conditions.
Filtration Recommendations for Maine
- 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 →
Maine 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.