Page 5 - CCR 2020

LEAD AND COPPER – Tested at customer taps.
Number
EPA’s of
Contaminant (Date, if Ideal EPA’s 90% of Homes
sampled in previous Action Results Were Violation Typical Sources
year) Goal Level Less Than with
(MCLG) High
Levels
Lead (08/14/19) 0 ppb 90% of 4.5 ppb 0 out of NO Corrosion of household
homes 30 plumbing.
less than
15 ppb
Copper (08/14/19) 0 ppm 90% of 0.15 ppm 0 out of NO Corrosion of household
homes 30 plumbing.
less than
1.3 ppm
INORGANIC & ORGANIC CONTAMINANTS – Tested in drinking water.
Highest
Contaminant (Date, if EPA’s EPA’s Average or Range of
sampled in previous Ideal Goal Limit Detected Violation Typical Sources
year) (MCLG) (MCL) Highest Single Test Results
Test Result
Nitrate 10 ppm 10.4 0.35 ppm 0.00 - 0.35 NO Runoff from fertilizer use;
ppm ppm Leaching from septic
tanks, sewage; Erosion of
natural deposits.
Barium 2 ppm 2 ppm 0.22 ppm 0.0355 - NO Discharge of drilling
0.2180 ppm wastes; Discharge from
metal refineries; Erosion
of natural deposit.
Gross Alpha 0 pCi/l 15.4 8.8 pCi/l 0.0 - 8.8 pCi/l NO Erosion of natural
pCi/l deposits.

Combined Radium 0 pCi/l 5.4 3.5 pCi/l 0.0 - 3.5 pCi/l NO Erosion of natural
pCi/l deposits.
1,1,1-Trichloroethane 200 ppm 200 1.7 ppm 0.00 - 1.70 NO Discharge from metal
ppm ppm degreasing sites and
other factories.