| The source of the PAC/Locke Lake Water System is eight wells. Treatment currently consists of arsenic removal at the Airstip pump station. Arsenic treatment for the Golf Course pump station will be completed by the end of the summer. | |||||||||
| PAC/LOCKE LAKE WATER SYSTEM | |||||||||
| EPA # 0142010 | |||||||||
| Inorganic Contaminants | Units | MCLG | MCL | Highest Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |
| Arsenic | ppb | n/a | 10 | 21 | 10 - 21 | 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. | |||||||||
| Barium | ppm | 2 | 2 | 0.0274 | 0.0264 - 0.0274 | 2005 | NO | Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits. | |
| Fluoride | ppm | 4 | 4 | 0.86 | 0.85 - 0.86 | 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 | 4.7 | 1.4 - 4.7 | 2005 | NO | Erosion of natural deposits | |
| Radon | pCi/L | Not Regulated | 5,100 | 0.0 to 5,100 | 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 | |
| Copper | ppm | 1.3 | 1.3 | 0.33 | 0 of 10 | 2006 | NO | Corrosion of household plumbing system | |
| Source Assessment Information | |||||||||
| Summary of Susceptibility Factors | |||||||||
| Source Name | Date | Low | Med | High | WELL LOCATION | ||||
| 003 - Bed Rock Well # 3 | 1/15/03 | 9 | 1 | 2 | 195 feet southeast of pump station 1 Golf Course | ||||
| 004 - Bed Rock Well # 4 | 1/15/03 | 9 | 2 | 1 | 295 feet southeast of pump station 1 Golf Course | ||||
| 007 - Bed Rock Well # 7 | 1/15/03 | 9 | 2 | 1 | 290 feet southsoutheast of pump station 1 Golf Course | ||||
| 009 - Bed Rock Well # 9 | 1/15/03 | 9 | 1 | 2 | 295 feet south of pump station 1 Golf Course | ||||
| 010 - Bed Rock Well # 10 | 1/15/03 | 8 | 1 | 3 | 2500 feet northnorthwest of pump station 2 Airstrip | ||||
| 011 - Bed Rock Well # 11 | 1/15/03 | 9 | 1 | 2 | 475 feet southsouthwest of pump station 1 Golf Course | ||||
| 016 - Bed Rock Well # 13 | 1/15/03 | 9 | 2 | 1 | 121 feet east of Peacham Rd | ||||
| 017 - Bed Rock Well # 14 | 1/15/03 | 9 | 2 | 1 | 300 feet south of Peacham Rd | ||||
| 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 | |||||||||