Portsmouth, RI Radon Mitigation and Testing

Q: What is the average radon level in Portsmouth, RI?

Based on 2 user-submitted tests, the average radon level is 4.50 pCi/L.

Q: What EPA Radon Zone is Portsmouth in?

Portsmouth is in Newport County, EPA Zone 2.

Q: How much does radon mitigation cost in Portsmouth?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Avg: 4.50 pCi/L

Newport County

EPA Zone 2

2 user tests

Portsmouth is located in Newport County, Rhode Island. With 2 user-submitted readings averaging 4.50 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 02871 zip code.

4.50

pCi/L average

Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Portsmouth, RI. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Portsmouth, RI Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Portsmouth, RI Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Portsmouth, Rhode Island Radon Levels

User-submitted radon test readings from homes in the Portsmouth area.

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Portsmouth, RI	100+ Years	Partial Basement	May 2022
4 pCi/L	Portsmouth, RI	0-20 Years	Full Basement	Jan 2022

Have a radon test result for Portsmouth? Submit your reading to help other homeowners.

Portsmouth Radon Facts

Key details about the radon risk profile for Portsmouth and the 02871 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Newport County, RI

Zip Code

02871

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

4.50 pCi/L

User Tests Submitted

Portsmouth and the 02871 zip code are located in Newport County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Portsmouth, RI

What is the average radon level in Portsmouth, RI?

Based on 2 user-submitted tests, the average radon level in Portsmouth is 4.50 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Portsmouth in?

Portsmouth and the 02871 zip code are in Newport County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Portsmouth?

Radon mitigation in Portsmouth typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Portsmouth?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Rhode Island

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Providence	11.00 pCi/L	2
Westerly	8.00 pCi/L	2
Portsmouth	4.50 pCi/L	2