| The primary source for the Bon Terrain water system is the Bon Terrain Well and Pump House located off of Old Nashua Road in Amherst, NH. A secondary source of supply is the Pennichuck Brook pond system which supplies water to the Pennichuck Water Treatment Plant which in turn supplies water to the city of Nashua, Bon Terrain, and the Amherst Village District. Treatment consist of pH adjustment and phosphate addition for corrosion control, and chlorination for disinfection. | |||||||||||||
| BON TERRAIN | |||||||||||||
| EPA # 0071020 | |||||||||||||
| Inorganic Contaminants | Units | MCLG | MCL | Level Detected | Range | Date | Violation Yes/No | Typical Source of Contaminant | |||||
| Nitrate as Nitrogen | ppm | 10 | 10 | 0.89 | n/a | 2006 | NO | Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits. | |||||
| Volatile Organic Contaminants | Units | MCLG | MCL | Average Level Detected | Range | Year | Violation Yes/No | Typical Source of Contamination | |||||
| Total Trihalomethanes (TTHMs) | ppb | 0 | 80 | 25.5 | 11 to 33 | 2006 | NO | By-product of drinking water chlorination | |||||
| Haloacetic Acids (HAA5) | ppb | 0 | 60 | 15.3 | 4.2 to 22 | 2006 | NO | By-product of drinking water chlorination | |||||
| Volatile Organic Contaminants | Units | MRDLG | MRDL | Distribution Average | Range | Year | Violation Yes/No | Typical Source of Contaminant | |||||
| Chlorine | ppm | 4 | 4 | 0.61 | nd to 0.86 | 2006 | NO | Water additive used to control microbes | |||||
| Radiological Contaminants | Units | MCLG | MCL | Avg. Level Detected | Range | Date | Violation Yes/No | Typical Source of Contaminant | |||||
| Gross Alpha (Compliance) | pCi/L | 0 | 15 | 1.8 | nd - 5.9 | 2005 | NO | Erosion of natural deposits | |||||
| Uranium | ug/L | 0 | 30 | 0.3 | 0.1 - 0.6 | 2005 | NO | Erosion of natural deposits | |||||
| Radium 226 & 228 | pCi/L | 0 | 5 | 0.25 | nd - 0.6 | 2005 | NO | Erosion of natural deposits | |||||
| Radon | pCi/L | Not Regulated | 203 | n/a | 2003 | n/a | Erosion of natural deposits | ||||||
| Presently, the Environmental Protection Agency is reviewing a proposed standard of 300 pCi/L for radon in drinking water. Radon gas that is inhaled has been linked to lung cancer; however, it is not entirely clear at what level radon in your drinking water contributes to this and other possible carcinogenic effects. | |||||||||||||
| Source Assessment Information | |||||||||||||
| Summary of Susceptibility Factors | |||||||||||||
| Source Name | Date | Low | Med | High | |||||||||
| Gravel Pack Well | 1/31/01 | 8 | 1 | 3 | |||||||||
| 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 | |||||||||||||