Is radon high in ZIP 01505?

High. The model's predicted long-term basement average for ZIP 01505 is 4.4 pCi/L (SD 0.11), with above-ground floors at 2.2 pCi/L. That is about 2.0× the average US ZIP code (2.2) and about 1.7× the Worcester County average of 2.5. It ranks 1 of 78 ZIPs in the county.

Do I need to test my home in 01505?

Yes, now. A predicted average at or above the EPA action level of 4 pCi/L means most homes in 01505 would qualify for mitigation. Use a short-term charcoal kit or a continuous monitor; if the result is 4 or higher, get bids for a mitigation system (typically $800-$2,500).

What EPA radon zone is ZIP 01505 in?

ZIP 01505 lies mostly in Worcester County, which the EPA classifies as Radon Zone 1 (highest potential (predicted average > 4 pCi/L)). Zones are county-wide and date from 1993; the ZIP-level prediction above is from a 2001-2021 model built on millions of tests.

Radon levels in ZIP 01505

HighEPA Zone 1

ZIP 01505 (Worcester County, Massachusetts): predicted long-term basement average of 4.4 pCi/L (model estimate), about 2.0× the average US ZIP (2.2) and about 2.4× the Massachusetts average (1.8).

Test ZIP 01505 now - and consider a continuous monitor

The model predicts a long-term basement average of 4.4 pCi/L here, at or above the EPA action level of 4. Homes in the same ZIP still vary widely, so a real test is the only way to know your number. A continuous digital monitor shows how your level swings with weather and season, which matters when you're near the action level.

Get a continuous radon monitor →Or start with a short-term test kit

Already tested at 4 pCi/L or higher? Find a certified mitigation professional (EPA). A mitigation system typically runs $800-$2,500 installed.

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Predicted (model estimate). The pCi/L figures on this page are long-term area averages from a peer-reviewed national model built on millions of real radon tests (2001-2021). They describe the typical home in this area - not your home, which can be several times higher or lower. The EPA radon zone is a separate, 1993 county-level classification. How the numbers work.

4.4 ± 0.11

pCi/L predicted basement mean (model SD)

2.2 ± 0.07

pCi/L predicted upstairs mean

4.0 ± 0.10

pCi/L predicted typical screening test

How 01505 compares

Within Worcester County, ZIP 01505 ranks #1 of 78 ZIPs by predicted basement level; the county average is 2.5 pCi/L and its ZIPs run from 1.5 to 4.4. The county is EPA Radon Zone 1. About 4,355 people lived in this ZIP at the 2010 Census.

A screening test in a typical 01505 home is predicted at 4.0 pCi/L, so first-floor living space - not just the basement - can exceed the action level here. Mitigation systems are routine in this range and typically cost $800-$2,500.

Other ZIP codes in Worcester County

014532.1
014202.6
015452.8
016042.5
017571.5
016052.5
016101.8
016022.9
016092.6
014402.3
016032.8
016062.6
015812.1
015703.3
015502.0
015013.5
015322.3
015203.3
015102.3
015692.6
013311.8
015272.6
015073.0
015622.7

Full list on the county page.

ZIP 01505 radon questions

Is radon high in ZIP 01505?: High. The model's predicted long-term basement average for ZIP 01505 is 4.4 pCi/L (SD 0.11), with above-ground floors at 2.2 pCi/L. That is about 2.0× the average US ZIP code (2.2) and about 1.7× the Worcester County average of 2.5. It ranks 1 of 78 ZIPs in the county.
Do I need to test my home in 01505?: Yes, now. A predicted average at or above the EPA action level of 4 pCi/L means most homes in 01505 would qualify for mitigation. Use a short-term charcoal kit or a continuous monitor; if the result is 4 or higher, get bids for a mitigation system (typically $800-$2,500).
What EPA radon zone is ZIP 01505 in?: ZIP 01505 lies mostly in Worcester County, which the EPA classifies as Radon Zone 1 (highest potential (predicted average > 4 pCi/L)). Zones are county-wide and date from 1993; the ZIP-level prediction above is from a 2001-2021 model built on millions of tests.

ZIP pages are generated for ZIPs predicted at or above 2.5 pCi/L and for the most populous ZIP in each county; all other ZIPs appear in their county table. Methodology.