Home hazard report for 01805 — Burlington, MA
ZIP 01805 is served by Burlington Water Dept: no health-based violations since 2016, latest lead result 2.2 ppb, PFAS 1 detected. Middlesex is in EPA radon zone 1.
No health-based violations reported since 2016.
90th-percentile lead in the latest round (Jan 2026). Lead comes mostly from household plumbing and service lines, so individual homes can be higher.
PFAS were detected, with PFOA and PFOS below 4.0 ppt (highest not detected).
Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code.
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Where ZIP 01805 is
blue: utility service area · scroll or pinch to zoomDrinking water: Burlington Water Dept
Health-based violations
No health-based violations reported since 2016.
Lead
90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.
PFAS (“forever chemicals”)
| Compound | Highest result | Samples with detection | EPA limit |
|---|---|---|---|
| PFBA | 11 ppt | 2 of 8 | — |
| PFHxA | not detected | 0 of 8 | — |
| HFPO-DA (GenX) | not detected | 0 of 8 | — |
| PFDA | not detected | 0 of 8 | — |
| PFOA | not detected | 0 of 8 | 4 ppt MCL |
| PFOS | not detected | 0 of 8 | 4 ppt MCL |
| PFHxS | not detected | 0 of 8 | — |
| PFHpA | not detected | 0 of 8 | — |
| PFBS | not detected | 0 of 8 | — |
| PFPeA | not detected | 0 of 8 | — |
| PFNA | not detected | 0 of 8 | — |
EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5), samples 2023–2025; ppt = parts per trillion (ng/L). The 4.0 ppt maximum contaminant levels for PFOA and PFOS were set by EPA in 2024; water systems have until the end of the decade to comply.
Radon in Middlesex
EPA radon zone 1 — highest potential. Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
Radon is a colorless, odorless radioactive gas from soil and rock, and the leading cause of lung cancer among non-smokers. EPA recommends fixing a home at 4 pCi/L or above and considering it from 2 pCi/L. A short-term test kit costs about $15–30. How radon zones work →
Superfund sites nearby
| Site | Status | Distance |
|---|---|---|
| Olin Chemical Wilmington, Massachusetts · EPA ID MAD001403104 | Active (final NPL) | 2.7 mi |
| Industri-Plex Woburn, Massachusetts · EPA ID MAD076580950 | Active (final NPL) | 2.9 mi |
| Wells G&H Woburn, Massachusetts · EPA ID MAD980732168 | Active (final NPL) | 3.4 mi |
| Naval Weapons Industrial Reserve Plant Bedford, Massachusetts · EPA ID MA6170023570 | Active (final NPL) | 5.1 mi |
| Hanscom Field/Hanscom Air Force Base Bedford, Massachusetts · EPA ID MA8570024424 | Active (final NPL) | 5.3 mi |
| Iron Horse Park Billerica, Massachusetts · EPA ID MAD051787323 | Active (final NPL) | 6.5 mi |
| Sutton Brook Disposal Area Tewksbury, Massachusetts · EPA ID MAD980520696 | Active (final NPL) | 6.5 mi |
EPA Superfund National Priorities List (NPL): the country’s most serious known hazardous-waste sites, each with an EPA cleanup record (linked). Distance is measured from the ZIP center to the site’s reference point; being near a site does not by itself mean exposure — EPA site pages describe what was found and how it is being cleaned up.
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions about 01805
Who supplies drinking water to ZIP 01805?
Burlington Water Dept (EPA ID MA3048000), a surface water (rivers, lakes) system serving about 25,864 people.
Is there lead in Burlington, MA tap water?
The utility’s latest 90th-percentile lead result (Jan 2026) was 2.2 ppb; EPA’s action level is 15 ppb, falling to 10 ppb from 2027. Lead mostly comes from service lines and home plumbing, so the only way to know your tap is to test it.
Does Burlington, MA water have PFAS?
PFAS were detected, with PFOA and PFOS below 4.0 ppt (highest not detected).
Has the water system in 01805 had violations?
No health-based violations reported since 2016.
Are there Superfund sites near 01805?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: Olin Chemical (2.7 mi, Active (final NPL)); Industri-Plex (2.9 mi, Active (final NPL)); Wells G&H (3.4 mi, Active (final NPL)).
Is radon a problem in Middlesex?
Middlesex is in EPA radon zone 1 (highest potential). Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.