| The source of the English Woods water supply is two wells and a pump house located on White Avenue off Route 114 in Bedford, NH. Bedrock well # 1 is located 90' south of the pump house and Bedrock well # 2 is located 122' southeast of the pump house. Treatment consists of aeration to remove radon, green sand filtration to remove iron and manganese, and potassium carbonate to increase the pH in order to maximize the removal capacity of the green sand and help control corrosion. | |||||||||
| ENGLISH WOODS | |||||||||
| EPA # 0192060 | |||||||||
| Inorganic Contaminants | Units | MCLG | MCL | Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |
| Barium | ppm | 2 | 2 | 0.026 | n/a | 2006 | NO | Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits. | |
| Fluoride | ppm | 4 | 4 | 0.24 | n/a | 2006 | NO | Erosion of natural deposits | |
| Radiological Contaminants | Units | MCLG | MCL | Average Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |
| Gross Alpha (Compliance) | pCi/L | 0 | 15 | 4.3 | 3.1 - 7.0 | 2004 | NO | Erosion of natural deposits | |
| Combined Radium | pCi/L | 0 | 5 | 1.7 | 0.9 - 2.4 | 2004 | NO | Erosion of natural deposits | |
| Uranium | ppb | 0 | 30 | 4.1 | 3.0 - 5.1 | 2004 | NO | Erosion of natural deposits | |
| Radon | pCi/L | 0 | None | 952 | 374 to 1620 | 2006 | n/a | Erosion of natural deposits | |
| Radon is a radioactive gas that you can't see, taste or smell. It can move up through the ground and into a home through cracks and holes in the foundation. Radon can also get into indoor air when released from tap water from showering, washing dishes, and other household activities. It is a known human carcinogen. Breathing radon can lead to lung cancer. Drinking water containing radon may cause an increased risk of stomach cancer. Presently EPA is reviewing a standard for radon in water. | |||||||||
| Inorganic Contaminants | Units | MCLG | AL | 90th percentile sample value | # sites above AL | Year | Violation Yes/No | Typical Source of Contaminant | |
| Copper | ppm | 1.3 | 1.3 | 0.305 | 0 of 5 | 2005 | NO | Corrosion of household plumbing system | |
| Source Assessment Information | |||||||||
| Summary of Susceptibility Factors | |||||||||
| Source Name | Date | Low | Med | High | |||||
| Bedrock Well # 1 | 3/15/02 | 7 | 3 | 2 | |||||
| Bedrock Well # 2 | 3/15/02 | 9 | 2 | 1 | |||||
| The complete Assessment Report is available for inspection. For more information call Gary Tetley or visit NH DES's Drinking Water Source Assessment Program web site at www.des.state.nh.us/dwspp | |||||||||