2007

The sources of the Autumn Woods water supply is three wells located off Route 111 in North Salem, NH.  Well #1 is located 175' north of the pump house, well # 3 is located 91' north of the pump house, and well # 4 is located 1,160' northeast of the pump house.  Treatment consist of chlorine for disinfection and polyphosphate for sequestering iron and manganese.  An aeration device is used to remove radon from the water.
AUTUMN WOODS
EPA # 2052070
Inorganic Contaminants	Units	MCLG	MCL	Level Detected	Range	Date	Violation Yes/No	Typical Source of Contaminant
Fluoride	ppm	4	4	0.24	n/a	2004	NO	Erosion of natural deposits
Radiological Contaminants	Units	MCLG	MCL	Level Detected	Range	Date	Violation Yes/No	Typical Source of Contaminant
Gross Alpha (Compliance)	pCi/L	0	15	3.2	1.6 - 3.2	2004	NO	Erosion of natural deposits
Combined Radium	pCi/L	0	5	1	nd - 1.0	2004	NO	Erosion of natural deposits
Uranium	ppb	0	30	6.9	1.5 - 6.9	2004	NO	Erosion of natural deposits
Radon	pCi/L	Not Regulated		794	628 to 794	2006	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.
Volatile Organic Contaminants	Units	MCLG	MCL	Level Detected	Range	Year	Violation Yes/No	Typical Source of Contaminant
Total Trihalomethanes (TTHMs)	ppb	n /a	80	9.8	n/a	2004	NO	By-product of drinking water chlorination.
Haloacetic Acids (HAA5)	ppb	n/a	60	1.4	n/a	2004	NO	By-product of drinking water chlorination.
Volatile Organic Contaminants	Units	MRDLG	MRDL	Yearly Average	Range	Year	Violation Yes/No	Typical Source of Contaminant
Chlorine	ppm	4	4	0.44	0.3 to 0.7	2006	NO	Water additive used to control microbes
Inorganic Contaminants	Units	MCLG	AL	90th percentile sample value	# sites above AL	Year	Violation Yes/No	Typical Source of Contaminant
Lead	ppb	0	15	nd	0	2005	NO	Corrosion of household plumbing system
Copper	ppm	1.3	1.3	0.306	0	2005	NO	Corrosion of household plumbing system
Source Assessment Information
		Summary of Susceptibility Factors
Source Name	Date	Low	Med	High
Bed Rock Well # 1	12/30/02	8	3	1
Bed Rock Well # 3	12/30/02	9	2	1
Bed Rock Well # 4	12/30/02	9	2	1
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