Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Piscataquis County, Maine
EPA puts Piscataquis County in Zone 1, its highest radon zone, and high results are common there: 47.7% of the 44 radon tests reported to CDC (2008 to 2017, laboratory totals) came back at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
47.7%
10.1 pts above ME
- Piscataquis
- 47.7%
- Maine
- 37.6%
44 tests, 2008 to 2017
Median result
3.5pCi/L
Below action level
- Piscataquis
- 3.5 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
44
16th of 16 by tests
- Piscataquis
- 44
- Cumberland
- 4,076
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Maine
2 of 16
Top quarter
- Piscataquis
- 47.7%
- York
- 48.4%
By share, of 16 with 30+ tests
Read a result for Piscataquis County
Starts at Piscataquis County's median, 3.5 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.5 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Piscataquis County's median reported result, 2008 to 2017.
The data
Piscataquis County, At a glance
Piscataquis County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Piscataquis County in
USGS geologic potential: Low across 52% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Piscataquis County, 2008 to 2017, laboratory
Under 2 pCi/L: 41%2 to 4 pCi/L: 11%4 pCi/L and above: 48%
Of 44 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 18 | 40.9% |
| 2 to 4 pCi/L | 5 | 11.4% |
| 4 pCi/L and above | 21 | 47.7% |
What these figures count
These are the 44 tests reported to CDC for Piscataquis County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Piscataquis County, Compared
Piscataquis County radon figures, compared
Calculated by Radon411In Piscataquis County, about 5 in 10 reported tests over the 2008 to 2017 laboratory totals (21 of 44) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 12.0 points higher. Across 16 Maine counties pooled together, 37.6% of tests reached that level, so Piscataquis County runs 10.1 points above its state.
Of 3 neighbours with a figure, none reported a larger share at or above 4 pCi/L; the spread is 16.4% (Penobscot County) to 45.1% (Aroostook County). By share, Piscataquis County is 2nd of 16 Maine counties with 30 or more tests for the same period.
Half the tests came in under 3.5 pCi/L and half over it; the single highest reached 47.7 pCi/L. Below the action level, 18 tests (40.9%) came in under 2 pCi/L, against 41.4% statewide, and 5 tests (11.4%) fell between 2 and 4, against 21.0% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 47.7% share point the same way here. USGS geology rates 52% of the county's land low radon potential. CDC also counts 7 tests taken after mitigation in Piscataquis County for the same period: tests in homes where a fix was already in.
CDC's ten-year totals for Piscataquis County went from 40 tests (2005 to 2014) to 44 (2008 to 2017), the share going from 45.0% to 47.7%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Piscataquis County, Geology
The ground under Piscataquis County
PredictedUSGS's geologic map splits Piscataquis County: 52.5% of its land is low radon potential and 10.2% high and 37.3% moderate. The map puts 52.5% of Piscataquis County in the area it calls Northern Maine Lowlands and 37.3% in Moose River Lowlands/Central Maine Lowlands/Central Maine Highlands/Coastal Province, with one smaller area beside them. USGS gives the first a radon index of 8, in the low band (5 to 8), and the second 11, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Northern Maine Lowlands | Clastic and carbonate sedimentary rocks. | Low | 8 | 52.5% |
| Moose River Lowlands/Central Maine Lowlands/Central Maine Highlands/Coastal Province | Heterogeneous metamorphic and igneous rocks. | Moderate | 11 | 37.3% |
| Central Maine Highlands | Calc-alkaline and alkaline granite and high grade metamorphic rocks. | High | 14 | 10.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Piscataquis County beside the ground around it
Maine as a whole has more high-potential ground than Piscataquis County: 24.5% of its land, against 10.2% here. Of the 3 counties that border it, 1 has more high-potential ground, Aroostook County the most at 10.4%.
The map rates the ground, not the air in any home.
Local help
Piscataquis County, Local resources
Radon testing and mitigation in Piscataquis County
- Maine Radiation Control ProgramMaine Radiation Control Program, run by Maine Center for Disease Control & Prevention, licenses or certifies radon professionals, and answers questions about testing and mitigation in Maine.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- See the Maine directoryNo professionals are listed in Maine yet. The state program can point you to registered testers and mitigators.
What Maine's program says
- Phone
- 207-287-5676
- radon.dhhs@maine.gov
- Licensing of radon professionals
Under Maine law, only the owner or occupant of a residence or someone registered with the state to provide these services, may test for radon, install and/or advise on the installation of a radon reduction (mitigation) system.
What it means
Piscataquis County, Questions
Questions about radon in Piscataquis County
Are radon levels high in Piscataquis County?
Over the 2008 to 2017 laboratory totals, 47.7% of the radon tests reported to CDC for Piscataquis County, Maine were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.5 pCi/L. Of 16 Maine counties with 30 or more tests for the same period, 1 reported a higher share; pooled, the state comes to 37.6%.
Which counties border Piscataquis County?
Piscataquis County borders 3 counties: Somerset County, Penobscot County and Aroostook County.
Products
Piscataquis County, Products
Testing a home in Piscataquis County
In Piscataquis County, 47.7% of 44 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 37.6% pooled across Maine. In Zone 1 the year-round level in Piscataquis County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.
Test kits and monitors3
See every kit and monitor
MonitorX-Sense
XR0B-SR battery digital radon monitor with an alarm
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Piscataquis County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Piscataquis County
Explore
Piscataquis County, Bordering counties
Counties bordering Piscataquis County
Calculated by Radon411- Radon levels in Aroostook CountyEPA zone 1
45.1%at or above 4 pCi/L
Median 3.5 pCi/L · 608 tests · 2.6 points below Piscataquis County
- Radon levels in Somerset CountyEPA zone 1
18.8%at or above 4 pCi/L
Median 1.5 pCi/L · 85 tests · 28.9 points below Piscataquis County
- Radon levels in Penobscot CountyEPA zone 1
16.4%at or above 4 pCi/L
Median 0.8 pCi/L · 1,491 tests · 31.3 points below Piscataquis County
Piscataquis County, Residents
Who lives in Piscataquis County
The Census Bureau estimates 17,409 residents in Piscataquis County for July 1, 2025, 594 more than in 2020 (+3.5%). Spread over its land, that is 4.4 people to the square mile. Reported testing is thin here: 44 tests over 2008 to 2017, or 2.5 for every 1,000 residents (2025 estimate), where Maine as a whole comes to 8.4.
Census lists no incorporated place in Piscataquis County: every home in it reads the county's figures.
Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).
Piscataquis County, Homes
Homes in Piscataquis County
Piscataquis County is a place of houses on their own lots: 82% of its 14,651 homes are detached single-family houses, against 70% across Maine. Half of its homes were built before 1976, close to Maine's 1976: 35% date from before 1960 and 18% from 2000 or later. Owners live in 77% of the occupied homes (Maine: 74%), so for most households a test and a fix are their own to order.
| Homes | Piscataquis County | Maine |
|---|---|---|
| Housing units | 14,651 | 746,552 |
| Detached houses | 82% | 70% |
| In buildings of 5 or more | 3% | 9% |
| Mobile homes | 11% | 8% |
| Built before 1960 | 35% | 35% |
| Built since 2000 | 18% | 20% |
| Middle year built | 1976 | 1976 |
| Owner-occupied | 77% | 74% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.