| The source of the PAC/Locke Lake Water System / Sec S is one bedrock well. Bed Rock Well # 1 is located 40 feet northwest of Locke Lake residence and approximately 20 feet southwest of the southwest corner of barn. Arsenic treatment was installed in August of 2006. | |||||||||
| PAC/LOCKE LAKE WATER SYSTEM / SEC S | |||||||||
| EPA # 0142020 | |||||||||
| Inorganic Contaminants | Units | MCLG | MCL | Highest Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |
| Arsenic | ppb | n/a | 10 | 15 | nd to 15 | 2006 | YES | Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes. | |
| HEALTH EFFECTS: Some people who drink water containing arsenic in excess of the MCL over many years could experience skin damage or problems with their circulatory system, and may have an increased risk of getting cancer. Arsenic levels since installation of the Arsenic removal system in August 2006 have been consistently below the 10 ppb MCL. | |||||||||
| Barium | ppm | 2 | 2 | 0.0269 | n/a | 2005 | NO | Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits. | |
| Fluoride | ppm | 4 | 4 | 0.85 | n/a | 2005 | NO | Erosion of natural deposits | |
| Radiological Contaminants | Units | MCLG | MCL | Highest Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |
| Gross Alpha (Compliance) | pCi/L | 0 | 15 | 1 | n/a | 2002 | NO | Erosion of natural deposits | |
| Combined Radium | pCi/L | 0 | 5 | 1.1 | 0.9 - 1.1 | 2005 | NO | Erosion of natural deposits | |
| Radon | pCi/L | Not Regulated | 6,500 | n/a | 2002 | 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. | |||||||||
| Lead and Copper | Units | MCLG | AL | 90th percentile sample value | # sites above AL | Year | Violation Yes/No | Typical Source of Contaminant | |
| Lead | ppb | 0 | 15 | 6 | 0 of 5 | 2006 | NO | Corrosion of household plumbing system | |
| Copper | ppm | 1.3 | 1.3 | 0.12 | 0 of 5 | 2006 | NO | Corrosion of household plumbing system | |
| Source Assessment Information | |||||||||
| Summary of Susceptibility Factors | |||||||||
| Source Name | Date | Low | Med | High | |||||
| Bedrock Well # 1 | 1/15/03 | 9 | 0 | 3 | |||||
| The complete Assessment Report is available for inspection. For more information visit NH DES's Drinking Water Source Assessment Program web site at www.des.state.nh.us/dwspp | |||||||||