Water Quality Statistics


2023 REGULATED CONTAMINANTS – ALL RESULTS MEET REGULATORY STANDARDS Analyte


Units


INORGANIC CONTAMINANTS Arsenic


Barium


Chromium, Total Fluoride


ppb ppb


ppb ppm


Nitrate (measured as Nitrogen) ppm Selenium


ppb RADIONUCLIDES


Alpha Emitters (2022 Avondale, 2023 Phoenix)


Uranium (2022 Avondale, 2023 Phoenix)


Radium 226 & 228 (2022 Avondale, 2023 Phoenix)


Combined Filter Effluent Turbidity (Only applies to Phoenix)


pCi/L ug/L pCi/L


TURBIDITY – WATER CLARITY NTU and %


TT: No value can exceed 1 NTU and at least 95% of monthly samples must be ≤ 0.3 NTU


Ratio NA


Low - High Average


TREATMENT PRECURSOR REMOVAL – DELIVERED WATER FROM CITY OF PHOENIX Total Organic Carbon Removal


TT = quarterly RAA ratio must be ≤ 1 NA Units MCL


Total Coliform Bacteria E. coli


# Pos in 2023 (highest monthly %) <5% monthly of 90 samples


# Pos in 2023 (highest monthly %) 0


DISINFECTION BYPRODUCTS AND DISINFECTANT RESIDUALS Chlorite


ppm Total Trihalomethanes (TTHMs) Haloacetic Acids (HAA5)


Free Chlorine Residual Chlorine Dioxide


ppb ppb


ppm ppb


ppb 1 80 60 MRDL=4 MRDL=800 15 (AL)


MCLG 0


0 0.8 NA NA MRDLG=4 MRDLG=800


METALS AS A BYPRODUCT OF CORROSION IN CONSUMERS’ PLUMBING Lead (2022)


0 Copper (2022) ppm 1.3 (AL) 1.3 NA


2023 DISTRIBUTION SYSTEM DATA – ALL RESULTS MEET REGULATORY STANDARDS Analyte


NA


Low - High Average


Low - High Average


Highest of all LRAA


Low - High Average


Highest of all LRAA


Low - High Average


Low - High Average


Low - High Average


90th percentile of 30 samples (Aug./Sep. 2022)


Low - High Average


90th percentile of 30 samples (Aug./Sep. 2022)


PAGE 6 2023 AVONDALE WATER QUALITY REPORT


Range Average


Low - High Average


NA - NA NA


Monthly Range of Values NA


City of Avondale


N/A 0


ND / Average: 0


NA NA


12.4 - 76.1 44.7 (Highest Locational Running Annual Avg.)


44.7 ND - 11 8.03


0.18 - 1.38 0.92


NA NA


ND - 6.6 ND


0


0.023 - 0.49 0.36


0.25


<0.22 - 2.0 0.9


ND - 580 NA


NA NA


90th percentile of 71 samples


(June-July 2021); High 4.0 NA


90th percentile of 71 samples (June-July 2021); High 0.4


7.35 (Highest Locational Running Annual Avg.)


1 - 22


17 (Highest Locational Running Annual Avg.)


100% of monthly measurements were ≤ 0.3 NTU; High = 0.2; NA


Monthly Range of Values 1.1 - 2.8


Delivered Water from City of Phoenix


NA 0


0 ND - 0.6


0.4 (Highest Qrtly Avg) 3 - 85


59 (Highest Locational Running Annual Avg.)


15 30 5


0 0 0


Low - High Average


Low - High Average


Low - High Average


ND - ND ND


1.7 - 4.6 3.1


ND ND


ND - 2.6 NA


ND - 2.9 NA


ND - ND NA


MCL % of total water delivered by 10


2000 100 4.0 10 50


0


2000 100 4.0 10 50


Low - High Average


Low - High Average


Low - High Average


Low - High Average


Low - High Average


Low - High Average


MCLG


Range Average


City of Avondale 83%


ND - 4.3 2.2


23 - 180 120


ND - 12 3.6


ND - 1.15 0.19


1.89 - 5.30 3.90


ND - ND ND


Delivered Water from City of Phoenix


17%


ND - 8 7


7 - 100 NA


ND - 57 NA


0.3 - 1.0 NA


ND - 4.2 NA


ND - 2 NA


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