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DUHQRWFRQVLGHUHGWREHD&RPPXQLW\:DWHU6\VWHPE\WKH6WDWHRI1HYDGDZDWHUTXDOLW\ The table associated with this report lists the drinking water contaminants detected. The
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NAFB 2015 CCR TABLE NELLIS AIR FORCE BASE DISTRIBUTION RESERV OIR #491 (1) RESERV OIR #562 (1) ALFRED M ERRITT SM ITH WATER RIV ER M OUNTAINS WATER
SYSTEM (1) TREATM ENT FACILITY (1) TREATM ENT FACILITY (1)
REGULATED CONTAM INANTS
UNIT M CL M CLG A V ERA GE M INIM UM M AXIM UM AVERAGE M INIM UM M AXIM UM AVERAGE M INIM UM M AXIM UM AVERAGE M INIM UM M AXIM UM AVERAGE POSSIBLE SOURCES OF CONTAM INATION
Alpha Particles (EPA Lim it) M INIM UM M AXIM UM
Arsenic pCi/L
Barium ppb 15 (EPA Goal)
Beta Particles and ppm
Photon Emitters pCi/L 0 Erosion of natural deposits of certain minerals that are
Bromate ppb N/D N/D N/D N/D N/D N/D 3.6 3.6 3.6 N/D N/D N/D radioactive and may emit a form of radiation known as
Copper (6) ppm
Fluoride ppm alpha radiation
Free Chlorine Residual ppm
Haloacetic Acids ppb 10 0 2 3 3 (2) 2 5 4 (2) 2 2 2 2 3 2 Erosion of natural deposits
Lead (6) ppb
Nitrate (as Nitrogen) ppm 2 2 Erosion of natural deposits; discharge from metal
Selenium ppb 50 (3) Entry Point Monitoring Only 0.1 0.1 0.1 0.1 0.1 N/D 0.1 0.1 0.1 0.1 0.1 0.1
Total Trihalomethanes ppb refineries: discharge of drilling wastes

Turbidity NTU Decay of natural and man-made deposits of certain

Uranium ppb 0 N/D (4) N/D (4) N/D (4) N/D (4) N/D (4) N/D (4) 3.5 (4) 3.5 (4) 3.5 (4) 3.2 (4) 3.2 (4) 3.2 (4) minerals that are radioactive and may emit a form of

radiation known as photons and beta radiation

10 0 N/A 3 12 (5) 7 (2) 5 13 (5) 9 (2) By-product of drinking-water disinfection with ozone

1.3 (7) 1.3 0.14 (8) 0.99 (8) 0.86 (8) DISTRIBUTION SYSTEM MONITORING ONLY Corrosion of household plumbing systems; erosion of
(Action Level) (90th% value) natural deposits

4.0 4.0 0.4 0.7 0.6 0.6 0.6 0.6 0.3 0.3 0.3 0.7 0.8 0.7 0.6 0.7 0.7 Erosion of natural deposits; water additive (9)

4.0 (10) 4.0 (10) 0.1 2.0 1.0 (2) W ater additive used to control microbes
(MRDL) (MRDLG)

60 N/A(11) 7 40 23 (12) DISTRIBUTION SYSTEM MONITORING ONLY By-product of drinking-water disinfection

15 (7) 0 N/D (8) 3.1 (8) 2.9 (8) Corrosion of household plumbing systems; erosion of
(Action Level) (90th% value) natural deposits

10 10 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.7 0.6 0.4 0.7 0.6 Runoff from fertilizer use; leaching from septic tanks,
sewage; erosion of natural deposits
Entry Point Monitoring Only

50 50 2 2 2 2 2 2 2 3 2 2 3 2 Erosion of natural deposits; discharge from mines;
component of petroleum

80 N/A(11) 22 78 52 (12) DISTRIBUTION SYSTEM MONITORING ONLY By-product of drinking-water disinfection

95% of the 100% of the samples were below
samples <0.3 100% of the samples were below 0.3 NTU. The maximum NTU
N/A Treatment Facility Monitoring Only 0.3 NTU. The maximum NTU was 0.074 on November 28, Soil runoff
NTU (13)
was 0.103 on August 16, 2014. 2014.

30 0 Entry Point Monitoring Only 4 4 4 2 2 2 4 4 4 4 4 4 Erosion of natural deposits

Footnotes: (ND=Not Detected)
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