Nassarawa LG is one of Kano's most densely populated local government areas and depends solely on groundwater (well and borehole) for drinking and other domestic purposes. Radon, one of the most important radioactive elements, is abundant due to the presence of uranium and radium. It can dissolve in underground water, leading to internal exposure if ingested. Therefore, there is a need for a radiological assessment of Radon-222 in the water and an evaluation of the health hazards associated with the level (high or low) of radon and background radioactivity. A total of one hundred (100) water samples were collected from the study area. The samples were analysed using a liquid scintillation counter from the Center for Energy Research (CERT), Ahmadu Bello University, Zaria. The mean radon activity concentration in the water was found to be 12.78±0.04 Bq/L, which is higher than the maximum permissible limits of 11.1 Bq/L and 10 Bq/L set by the USEPA and WHO, respectively (WHO, 2004; USEPA, 2003). The mean radon activity concentration in well and borehole water was 11.946±0.04Bq/L and 13.612±0.04Bq/L, respectively, with a range from 3.634±0.04Bq/L to 44.952±0.04Bq/L. The highest recorded radon activity concentration was 44.952±0.04Bq/L in borehole water from Giginyu, and the lowest was recorded in well water from Kawo. 70% of the total samples had a high radon concentration, exceeding the maximum contaminant levels of 11.1 Bq/L set by USEPA and 10 Bq/L set by WHO, as also reported

The Ingul megablock of the Ukrainian Shield contains a number of endogenous deposits of the sodium-uranium formation, which have been developed for more than 55-60 years. With the exception of the Kirovograd uranium ore region, the deposits of which are controlled by discontinuities in the fault zone of the same name, the Vatutinske and Novokostiantynivske ore fields occupy positions within the Novoukrainsky granite-gneiss dome and in close proximity to the later geostructural formation, the Korsun-Novomyrgorod pluton. Paying attention to the high degree of saturation of the Ingul megablock with endogenous uranium deposits, it is emphasized that they also contain an increased content of thorium minerals and, in combination with uranium, they produce ascending gas flows of radon. Therefore, studies of the dynamics of the upper horizons of the lithosphere and the closely related dynamics of the hydrosphere (underground and surface), as well as the gas sphere, are especially relevant both in the regions of uranium ore fields and in areas adjacent to mining enterprises. Beyond the direct influence on the radioecological situation of uranium mining enterprises, special attention should be paid to the study of the dynamics of the lithospheric surface, including fault-block structures and the kinematics of ruptures, affecting the spread of groundwater and, as a result, surface waters contaminated with uranium in the environment. In the areas of uranium ore fields, the kinematic char

Radon, a naturally occurring radioactive gas generated underground by radioactive decay of nuclides contained in certain types of rocks, can concentrate inside buildings, where it poses the second-largest risk factor for lung cancer, after smoking. The highest concentrations of domestic radon in the UK occur in the south-western counties of Devon and Cornwall, but certain areas in Northamptonshire and surrounding counties in the English Midlands also have high levels. It has been shown that it is possible both to reduce the radon concentrations in existing houses and to build new homes with appropriate protection. Since 1999, the UK's Building Regulations have specified that all new homes should be built with a combined radon-proof/damp-proof membrane plus, in Radon Affected Areas, a sump under the building. However, the building regulations do not require that the radon level is measured once the house is built and so there is little information on the effectiveness of these measures. Builders generally do not mention radon, and when asked, just confirm that their houses are built to current standards. To better understand the efficacy or otherwise of the currently mandated radon-protection measures, a cross-sectional investigation was carried out in 26 new housing developments in high-radon areas in Northamptonshire. In a targeted mail-shot, 1056 householders were invited to apply for a free radon test; 124 replied (11.7%). In total, 94 pairs of detectors were returned (70.