| CABOT PRESERVE | EPA # 0192070 | |||||||||||
| Inorganic Contaminants | Date(s) Collected | Average Detect | Range Detected | MCL or MRDL | MCLG or MRDLG | Violation Yes/No | Typical Source of Contaminant | |||||
| Arsenic (ppb) | 2010 | 5 | N/A | 10 | n/a | No | Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes. | |||||
| Fluoride (ppm) | 2010 | 0.1 | N/A | 4 | 4 | No | Erosion of natural deposits; discharge from fertilizer and aluminum factories | |||||
| Nitrate as Nitrogen (ppm) | 2010 | 1.28 | N/A | 10 | 10 | No | Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits. | |||||
| Sodium (ppm) | 2010 | 66.9 | 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 | 0.16 | nd - 0.4 | 4 | 4 | No | Water additive used to control microbes | |||||
| Total Trihalomethanes (ppb) | 2010 | 15 | N/A | 80 | 0 | No | By-product of drinking water chlorination | |||||
| Radiological Contaminants | ||||||||||||
| Radon (pCi/L) | 2009 | 1,285 | N/A | Not Regulated | N/A | Erosion of natural deposits | ||||||
| Date(s) Collected | 90th Percentile | Action Level | MCLG | Number of Sites Sampled | # sites above Action Level | Violation Yes/No | Typical Source of Contaminant | |||||
| Copper (ppm) | 7/15/08 7/16/08 | 0.533 | 1.3 | 1.3 | 7 | 0 | No | Corrosion of household plumbing system | ||||
| Lead (ppb) | 7/15/08 7/16/08 | < 5 | 15 | 0 | 7 | 0 | No | Corrosion of household plumbing system | ||||
| What is the source of my drinking water? | ||||||||||||
| The source of the Cabot Preserve water supply is an interconnection with the Town of Merrimack. The Town of Merrimack operates six wells located in Merrimack and Hollis. | ||||||||||||
| Source Water Assessment Summary | ||||||||||||
| Summary of Susceptibility Factors | ||||||||||||
| Source Name | Date | Low | Med | High | ||||||||
| 003 - GPW # 3 - Camp Sargent Rd. | 2/20/02 | 9 | 2 | 1 | ||||||||
| 004 - GPW # 4 - MVD 4 | 2/20/02 | 5 | 4 | 3 | ||||||||
| 005 - GPW # 5 - MVD 5 | 2/20/02 | 5 | 3 | 4 | ||||||||
| 007 - GPW # 7 - Withces Brk. Hollis | 3/31/00 | 9 | 2 | 1 | ||||||||
| 008 - GPW # 2A - Berry Ln. | 2/20/02 | 9 | 2 | 1 | ||||||||
| 009 - GPW # 8 - 450' SE Well 7 Hollis | 2/20/02 | 9 | 2 | 1 | ||||||||
| 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 | ||||||||||||