| Sweet Hill | EPA # 1932200 | ||||||||
| Inorganic Contaminants | Date(s) Collected | Highest Detect | Range Detected | MCL or MRDL | MCLG or MRDLG | Violation Yes/No | Typical Source of Contaminant | ||
| Barium (ppm) | 12/22/09 | 0.045 | N/A | 2 | 2 | No | Erosion of natural deposits | ||
| Fluoride (ppm) | 12/22/09 | 0.30 | N/A | 4 | 4 | No | Erosion of natural deposits | ||
| Sodium (ppm) | 12/22/09 | 24.6 | N/A | Not Regulated | N/A | Natural sources; runoff from use as salt on roadways; by-product of treatment process | |||
| Volatile Organic Contaminants | |||||||||
| Chlorine (ppm) | 2010 | 0.45 Avg | 0.3 - 0.7 | 4 | 4 | No | Water additive used to control microbes | ||
| Total Trihalomethanes (ppb) | 2/16/10 4/26/10 7/29/10 8/24/10 | 13 | 7.6 - 13 | 80 | 0 | No | By-product of drinking water chlorination | ||
| Haloacetic Acids (ppb) | 8/24/10 | 1.6 | N/A | 60 | 0 | No | By-product of drinking water chlorination | ||
| Radiological Contaminants | |||||||||
| Radium 226 & 228 (pCi/L) | 2/16/10 4/26/10 7/29/10 | 1.6 0.87-RAA | nd - 1.6 | 5 | 0 | No | Erosion of natural deposits | ||
| Uranium (ppb) | 2/16/10 4/26/10 7/29/10 | 5.4 2.0-RAA | nd - 5.4 | 30 | 0 | No | Erosion of natural deposits | ||
| Radon (pCi/L) | 4/5/10 | 699 | N/A | Not Regulated | N/A | Erosion of natural deposits | |||
| Date(s) Collected | 90th Percentile | Action Level | MCLG | # of Sites Sampled | # Sites Above Action Level | Violation Yes/No | Typical Source of Contaminant | ||
| Lead (ppb) | 5/14/08 | < 5 | 15 | 0 | 5 | 0 | No | Corrosion of household plumbing system | |
| Copper (ppm) | 5/14/08 | 0.105 | 1.3 | 1.3 | 5 | 0 | No | Corrosion of household plumbing system | |
| What is the source of my drinking water? | |||||||||
| The source for the Sweet Hill water supply is two bedrock wells. Bedrock well # 1 is located 280 feet south of the pump station. Bedrock well # 2 is located 400 feet east of the pump station. The pump station located off Sweet Hill Road in Plaistow, NH. Treatment consists of chlorine to kill bacteria and aeration to remove radon. | |||||||||
| Source Water Assessment Summary | |||||||||
| Summary of Susceptibility Factors | |||||||||
| Source Name | Date | Low | Med | High | |||||
| Bedrock Well # 1 | 12/18/01 | 9 | 1 | 2 | |||||
| Bedrock Well # 2 | Information currently not available | ||||||||
| The complete Assessment Report is available for review. For more information call Gary Tetley at 800-553-5191 ext. 2378 or visit NH Department of Environmental Services Drinking Water and Groundwater Bureau web site at http://www.des.nh.gov/organization/divisions/water/dwgb/dwspp/reports/index.htm | |||||||||