2007

The source of the Pinehaven water supply are four point wells located 30 feet north of the pump house.  The pump house is located on Pleasant Drive in Londonderry, NH.  Treatment consist of chlorine addition to kill bacteria, aeration to remove radon from the water, and sodium hydroxide to adjust pH to aid in corrosion control.
PINEHAVEN
EPA # 1392040
Inorganic Contaminants	Units	MCLG	MCL	Level Detected	Range	Year	Violation Yes/No	Typical Source of Contaminant
Barium	ppm	2	2	0.023	n/a	2005	NO	Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits.
Thallium	ppb	0.5	2	1	nd to 1	2005	NO	Leaching from ore-processing sites; discharge from electronics, glass and drug factories.
Nitrate as Nitrogen	ppm	10	10	5.56	5.35 - 5.56	2006	NO	Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits.
Nitrate in drinking water at levels above 10 ppm is a health risk for infants of less than six months of age.  High nitrate levels in drinking water can cause blue baby syndrome, Nitrate levels may rise quickly for short periods of time because of rainfall or agricultural activity.  If you are caring for an infant you should ask advice from your health care provider.
Volatile Organic Contaminants	Units	MCLG	MCL	Average Level Detected	Range	Year	Violation Yes/No	Typical Source of Contaminant
Methyl-Tertiary-Butyl Ether (MtBE)	ppb	13	13	0.43	nd to 0.6	2006	NO	Gasoline additive
Volatile Organic Contaminants	Units	MRDLG	MRDL	Average Level  Detected	Range	Year	Violation Yes/No	Typical Source of Contaminant
Chlorine	ppm	4	4	0.41	0.0 - 0.6	2006	NO	Water additive used to control microbes
Radiological Contaminants	Units	MCLG	MCL	Level Detected	Range	Year	Violation Yes/No	Typical Source of Comtamination
Gross Alpha (Compliance)	pCi/L	0	15	0.9	n/a	2002	NO	Erosion of natural deposits
Radon	pCi/L	Not Regulated		497	472 - 497	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.
Inorganic Contaminants	Units	MCLG	AL	90th percentile sample value	# sites above AL	Year	Violation Yes/No	Typical Source of Contaminant
Copper	ppm	1.3	1.3	0.088	0	2005	NO	Corrosion of household plumbing system
Source Assessment Information
		Summary of Susceptibility Factors
Source Name	Date	Low	Med	High
Point Wells 4	3/15/02	8	1	3
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