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75C - PH - RPT ON WATER QUALITY RELATIVE TO PUBLIC HEALTH GOALS
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75C - PH - RPT ON WATER QUALITY RELATIVE TO PUBLIC HEALTH GOALS
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1/3/2012 4:02:42 PM
Creation date
7/1/2010 8:58:36 AM
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City Clerk
Doc Type
Agenda Packet
Item #
75C
Date
7/6/2010
Destruction Year
2015
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Primary Standards -Mandatory Health-Related Standards <br /> CLARITY PHG Imported Water Groundwater Typical Source Of <br /> Parameter MCL (MCLG) Highest %LeseThan Range Average <br /> CoMaminaM <br /> 0.3 <br /> k Combined Filter Effluent Less than 0.3 <br /> NTU in 95 % of NA ~ 0.08 100 % NR NR Soil runoff <br /> } Turbidity (NTU) ~ ~ l <br /> all samples I E <br /> Turbidity: Is a measure of the cloudiness of the water. It is monitored in our imported water source because it is a good indicator of the effectiveness of the filtration <br /> s~tem~ I <br /> MICROBIOLOGICAL PHG Imported Water Groundwater Typical Source of <br /> MCL <br /> Parameter (MCLG) Range Average Range Average Contaminant <br /> Total Coliform Bacteria 5 0 0.0 - 0.14 % 0.02 % 0 - 0.5 % 0 Naturally present in the <br /> environment <br /> RADIOLOGICALS <br /> Decay of natural and <br /> Gross Beta activity (pCi/L) 50 0 ND - 6.4 ND NR NR <br /> manmade deposits <br /> Gross Alpha activity (pCi/L) 15 0 ND - 7.2 ND ND - 10.6 2.9 <br /> Erosion of natural deposits <br /> Gross Beta Activity: Effective 6/11/2006, the gross beta particle activity MCL is 4 millirem/year annual dose equivalent to the total body or any internal organ. 50 pCi/L <br /> is used as a screening level. <br /> INORGANIC CHEMICALS <br /> ) s~v~~~~ ~ Erosion of natural deposits; <br /> Aluminum (ppb) 1000 600 ND - 140 ( 70 ND - 110 j 6.11 } residue from some surface ) <br /> _ ! i ! ~ water treatment processes <br /> I I Erosion of natural deposits; <br /> I runoff from orchards, lass <br /> Arsenic (ppb) % 10 0.004 ND i ND I ND - 3.2 I 0.39 g <br /> i ~ and electronics production <br /> ( ~ ~ wastes j <br /> _._..,.i._-______-..._ .q.-.._._.._.__ . _ <br /> , . _ I v___-~ ~ <br /> Oil and metal refineries <br /> Barium (ppb) "s 1000 ~ 2000 ND 103 ND ( ND - 171 ; 17.5 ' discharges; natural deposits; <br /> I I <br /> i I I ~ ~ erosion <br /> _ 'k--_ ~ <br /> r_.._____-_. <br /> ~ Erosion of natural deposits; <br /> Fluoride (ppm) 2 t 0.1 0 2 0 2 ) 0.18 - 0.56 ~ 0.35 f dischar a from lertilizer and <br /> (naturally occurring) - ! i i 9 <br /> _ - aluminum factories I <br /> Fluonde(PPmJ fi_... ,-i•...... +..-~.s_._...~._.-~~°____-.____...~.~-i <br /> i Water additive for dental <br /> j (Treatment -related) { (a) ~ 1 0.6 1.0 f 0 8 NA ~ NA k <br /> health j <br /> -.h...._~. .y <br /> Nitrate (as N03 ppm) f 45 45 ND 0 8 ~ 0.5 ND - 31.87 I 10 64 Runoff and leaching from <br /> <br /> ~ M_ _ Y _ _ fertilizer use; leaching from <br /> <br /> i Nitrate and Nitrite as N f ~ ! ~ y~ <br /> ( t septic tanks and sewage; <br /> PP ) 10 10 ! ND + ND ~ ND 7 2 ~ 2.41 erosion o nature epo <br /> m , f I d its <br /> s !i <br /> i I E Refineries, mines, and <br /> Selenium (ppb) 50 -50 ND ~ ND ! NR ~ NR f chemical waste discharges; <br /> , ! ` runoff <br /> SPECIAL EDUCATIONAL STATEMENT REGARDING NITRATE: Nitrate levels may rise quickly for short periods of time because of rainfall or agricultural activity. <br /> Nitrate in drinking water at levels above 45 mg/L is a health risk for infants of less than six months of age. Such nitrate levels in drinking water can interfere with the <br /> capacity of the infant's blood to carry oxygen, resulting in a serious illness; symptoms include shortness of breath and blueness of the skin. Nitrate levels above 45 mg/L <br /> may also affect the ability of the blood to carry oxygen in other individuals, such as pregnant women and those with certain specific enzyme deficiencies. If you are <br /> caring for an infant, you should ask advice from your health care provider. <br /> 75C-14 <br /> <br />
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