| Clear Water Estates | EPA # 1972070 | ||||||||
| Microbiological Contaminants | Date(s) Collected | Highest Detect | Range Detected | MCL | MCLG | Violation Yes/No | Typical Source of Contaminant | ||
| E. coli Bacteria found in Well #1 only. No Coliforms were found in the other well or the distribution system. | 3/17/2010 | 3.1 | N/A | 0 | 0 | YES | Human and animal fecal waste | ||
| Health Effects: E. coli are bacteria whose presence indicates that the water my be contaminated with human or animal wastes. Microbes in these wastes can cause short-term effects, such as diarrhea, cramps, nausea, headaches, or other symptoms. They may pose a special health risk for infants, young children, and people with severely compromised immune systems. | |||||||||
| Inorganic Contaminants | Date(s) Collected | Highest Detect | Range Detected | MCL or MRDL | MCLG or MRDLG | Violation Yes/No | Typical Source of Contaminant | ||
| Fluoride (ppm) | 2/4/09 | 1.78 | N/A | 4 | 4 | No | Erosion of natural deposits | ||
| Sodium (ppm) | 2/4/09 | 102 | N/A | Not Regulated | N/A | Natural sources; runoff from use as salt on roadways; by-product of treatment process | |||
| Radiological Contaminants | |||||||||
| Compliance Gross Alpha (pCi/L) | 1/18/06 4/27/06 9/25/06 10/25/06 | 0.1 | nd - 0.1 | 15 | 0 | No | Erosion of natural deposits | ||
| Radium 226 & 228 (pCi/L) | 1/18/06 4/27/06 9/25/06 10/25/06 | 0.3 | nd - 0.3 | 5 | 0 | No | Erosion of natural deposits | ||
| Uranium (ppb) | 1/18/06 4/27/06 9/25/06 10/25/06 | 4.1 | nd - 4.1 | 30 | 0 | No | Erosion of natural deposits | ||
| Radon (pCi/L) | 4/21/10 | 397 | N/A | Not Regulated | N/A | Erosion of natural deposits | |||
| Lead and Copper | Date Collected | 90th Percentile | Action Level | MCLG | # of Sites Sampled | # Sites Above Action Level | Violation Yes/No | Typical Source of Contaminant | |
| Lead (ppb) | 5/19/09 | < 5 | 15 | 0 | 8 | 0 | No | Corrosion of household plumbing system | |
| Copper (ppm) | 5/19/09 | 0.171 | 1.3 | 1.3 | 8 | 0 | No | Corrosion of household plumbing system | |
| Volatile Organic Contaminants | |||||||||
| Chlorine (ppm) | 2010 | 0.3 Avg | nd - 0.5 | 4 | 4 | No | Water additive used to control microbes | ||
| Total Trihalomethanes (ppb) | 8/19/10 | 12 | N/A | 80 | 0 | No | By-product of drinking water chlorination | ||
| Haloacetic Acids (ppb) | 8/19/10 | 2.2 | N/A | 60 | 0 | No | By-product of drinking water chlorination | ||
| VIOLATIONS: A boil order was put into effect on 3/17/10 because a routine ground water sample taken from well #1 was positive for E. coli bacteria. Well # 1 was shut off and chlorinated; a continuous chlorination system was installed on 3/17. Subsequent samples taken from well # 1 on 3/19, 3/20, 3/22, 3/24, and 3/25 were all absent of E. coli bacteria. The source of the contamination was attributed to heavy rains. Distribution samples taken during this period were all absent of total coliform bacteria. The boil order was lifted on 3/22/10. | |||||||||
| What is the source of my drinking water? | |||||||||
| The source of the Clear Water Estates water supply is two wells. Bedrock well # 1 is located 158 feet south of the pump house. Bedrock well # 2 is located 156 feet southwest of the pump house. Treatment consists of chlorine to kill bacteria and ion exchange to remove hardness as well as iron and manganese. | |||||||||
| Source Water Assessment Summary | |||||||||
| Summary of Susceptibility Factors | |||||||||
| Source Name | Date | Low | Med | High | |||||
| Bedrock Well # 1 | Not available at this time | ||||||||
| Bedrock Well # 2 | Not available at this time | ||||||||
| 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 | |||||||||