Certified radon testing companies in Sussex County, NJ

Radon note for Sussex County: 22 municipalities here are NJDEP Tier 1 (high radon potential). Testing is the only way to know your home's level — see your town's published test data:

• Andover Borough and Andover Township

  2098 homes tested · 37% ≥ 4 pCi/L

• Branchville Borough

  716 homes tested · 29% ≥ 4 pCi/L

• Byram Township and Stanhope Borough

  2985 homes tested · 28% ≥ 4 pCi/L

• Frankford Township

  793 homes tested · 35% ≥ 4 pCi/L

• Franklin Borough

  1002 homes tested · 34% ≥ 4 pCi/L

• Fredon Township

  612 homes tested · 52% ≥ 4 pCi/L

• Green Township

  647 homes tested · 51% ≥ 4 pCi/L

• Hamburg Borough

  1273 homes tested · 28% ≥ 4 pCi/L

• Hampton Township

  581 homes tested · 37% ≥ 4 pCi/L

• Hardyston Township

  1625 homes tested · 29% ≥ 4 pCi/L

• Hopatcong Borough

  4712 homes tested · 30% ≥ 4 pCi/L

• Lafayette Township

  619 homes tested · 46% ≥ 4 pCi/L

• Montague Township

  811 homes tested · 35% ≥ 4 pCi/L

• Newton Town

  3039 homes tested · 42% ≥ 4 pCi/L

• Ogdensburg Borough

  501 homes tested · 33% ≥ 4 pCi/L

• Sandyston Township

  308 homes tested · 30% ≥ 4 pCi/L

• Sparta Township

  7083 homes tested · 34% ≥ 4 pCi/L

• Stillwater Township

  742 homes tested · 34% ≥ 4 pCi/L

• Sussex Borough

  1433 homes tested · 34% ≥ 4 pCi/L

• Vernon Township

  5779 homes tested · 38% ≥ 4 pCi/L

• Walpack Township

  3 homes tested · 0% ≥ 4 pCi/L

• Wantage Township

  1836 homes tested · 45% ≥ 4 pCi/L