2014 Water Quality Report

2014 Water Quality Report

Regulated MCL MCLG Highest Level Detected Range of Detection Violation Major Source of Contamination
Nitrate (ppm) 10 10 3.0 1.4 – 3.0 NO Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Gross Alpha activity(pCi/L) (data from 2012) 15 0 2.6 .13 – 2.6 NO Erosion of natural deposits
Combined Radium (pCi/L) (data from 2012) 5 0 1.1 .8 – 1.1 NO Erosion of natural deposits
Barium (ppm) (data from 2013) 2 2 .055 .022 – .055 NO Erosion of natural deposits
 Total Haloacetic Acids (HAA5) (ppb)  60  n/a  1.8  .9 – 1.8 NO By product of drinking water disinfection
 Total Trihalomethane (TTHM) (ppb)  80  n/a  12.0  3.9 – 12.0 NO By product of drinking water disinfection
Unregulated ORSG SMCL Average Range of Detection
Sulfate (ppm) (data from 2013) 250 11.02 9.1 – 12.0 NO Naturally occurring
Sodium (ppm) (data from 2013) 20 19 12 – 30 NO Naturally occurring salt deposits; storm water runoff
Manganese (ppm) .3 .05 .06 .016 – .11 NO Erosion of natural deposits
Chloroform (ppb) 60 .70 .51 – 1.2 NO Naturally occurring
Lead and Copper Action Level (AL) MCLG 90th Percentile Samples Above the AL
Lead (ppb) (data from 2013) 15 15 0 0 out of 20 NO Corrosion of household plumbing
Copper (ppm) (data from 2013) 1.3 1.3 .21 0 out of 20 NO Corrosion of household plumbing
Microbiological Contaminants MCL Highest # Positive Samples
Total Coliform * >5% of Samples 1 NO Naturally present in environment
E. coli** 0 1 YES Human and animal fecal waste