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<br />2025 PUBLIC HEALTH GOALS REPORT
<br />CITY OF SANTA ANA
<br />UNITS
<br />OF
<br />MEASUREMENT
<br />PHG
<br />OR
<br />(MCLG)*
<br />MCL DLR
<br />OR
<br />(CCRDL)
<br />CONCENTRATION CATEGORY CANCER RISK CANCER BEST
<br />AVAILABLE
<br />TECHNOLOGIES
<br />AGGREGATE
<br />COST
<br />PER YEAR
<br />COST PER
<br />SERVICE CONNECTION
<br />PER YEAR
<br />PARAMETER AVERAGE RANGE OF AT PHG RISK
<br />RISK OR MCLG AT MCL
<br />INORGANIC CHEMICALS
<br />Arsenic μg/l
<br />μg/l
<br />μg/l
<br />μg/l
<br />0.004
<br />0.1
<br />10
<br />10
<br />10
<br />6
<br />2
<br />1
<br />ND
<br />ND
<br />0.7
<br />ND
<br />ND - 2.5
<br />ND - 7.6
<br />0.29 - 2.3
<br />ND - 3.3
<br />C
<br />C
<br />C
<br />E
<br />1 x 10-6
<br />1 x 10-6
<br />1 x 10-6
<br />NA
<br />2.5 x 10-3
<br />1 x 10-4
<br />5 x 10-4
<br />NA
<br />AA,C/F,E,IE,LS,O/F,RO
<br />C/F, GAC, RO
<br />IE, R/C/F, RO
<br />$2,610,000 (a)$57 (a)
<br />Bromate $2,020,000 - $17,300,000 (b)
<br />$17,800,000 - $111,000,000 (c)
<br />$3,370,000 - $7,400,000 (d)
<br />$44 - 379 (b)
<br />$390 - $2,440 (c)
<br />$74 - $162 (d)
<br />Hexavalent Chromium
<br />Perchlorate
<br />0.02
<br />1
<br />0.1
<br />1 IE, BFBR
<br />ORGANIC CHEMICALS
<br />Perfluorooctanesulfonic Acid (PFOS)
<br />Perfluorooctanoic Acid (PFOA)
<br />ng/l
<br />ng/l
<br />1 4 **
<br />4 **
<br />(4)
<br />(4)
<br />ND
<br />ND
<br />ND - 22 ***
<br />ND - 15 ***
<br />C
<br />C
<br />1 x 10-6
<br />1 x 10-6
<br />(e)
<br />(e)
<br />GAC, IE, RO
<br />GAC, IE, RO
<br />$4,450,000 - $60,800,000 (f)
<br />--
<br />$97 - $1,330 (f)
<br />--0.007
<br />RADIOLOGICAL
<br />Gross Alpha Particle Activity pCi/l (0)15
<br />50
<br />3 ND
<br />ND
<br />ND - 5
<br />ND - 9
<br />C 0 1 x 10-3
<br />2 x 10-3
<br />3 x 10-4
<br />5 x 10-5
<br />RO $10,500,000 - $89,800,000 (g)$230 - $1,970 (g)
<br />Gross Beta Particle Activity
<br />Radium, Combined (h)
<br />pCi/l
<br />pCi/l
<br />(0)
<br />(0)
<br />4 C
<br />C
<br />0 IE, RO --
<br />--
<br />--
<br />--1 (h)1 x 10-6
<br />1 x 10-6
<br />IE, LS, RO5ND
<br />2
<br />ND - 1
<br />Uranium pCi/l 0.43 20 1 ND - 5.8 C
<br />--
<br />IE, RO, LS,C/F
<br />IE and RO
<br />----
<br />ALL CONTAMINANTS ----------------$14,100,000 - $99,500,000 (i)$309 - $2,180 (i)
<br />* MCLGs are shown in parentheses. MCLGs are provided only when no applicable PHG exists.
<br />** Federal MCL
<br />*** Range of detections reported before the effective Federal MCL compliance date of April 26, 2029.TREATMENT TECHNOLOGIES
<br />AA = Activated Aluminum
<br />BFBR = Biological fluidized Bed Reactor
<br />C/F = Coagulation/Filtration
<br />E = Electrodialysis
<br />RISK CATEGORIES
<br />C (Carcinogen) = A substance that is capable of producing cancer.
<br />E (Endocrine Toxicity and Developmental Toxicity) = A substance that can affect the thyroid or cause neurodevelopmental deficits.
<br />GAC = Granular Activated Carbon
<br />IE = Ion ExchangeNOTES
<br />CCRDL = Consumer Confidence Report Detection Level
<br />DLR = Detection Limit for Purposes of Reporting
<br />MCL = Maximum Contaminant Level
<br />MCLG = Maximum Contaminant Level Goal
<br />μg/l = micrograms per liter or parts per billion
<br />NA = Not Applicable
<br />LS = Lime Softening
<br />O/F = Oxidation/Filtration
<br />R/C/F = Reduction/Coagulation/Filtration
<br />RO = Reverse Osmosis
<br />ND = Not Detected
<br />ng/l = nanograms per liter or parts per trillion
<br />pCi/l = picoCuries per liter
<br />PHG = Public Health Goal
<br />(a) Estimated cost to remove arsenic using IE.
<br />(b) Estimated cost to remove bromate using RO.
<br />(c) Estimated cost to remove hexavalent chromium using R/C/F.
<br />(d) Estimated cost to remove perchlorate using IE.
<br />(e) Not applicable. Cancer risk cannot be calculated.
<br />(f) Estimated cost to remove PFOS and PFOA using IE.
<br />(g) Estimated cost to remove gross alpha particle activity using RO, which also removes combined radium, gross beta particle activity, and uranium.
<br />(h) As the sum of radium-226 and radium-228. DLRs for radium-226 and radium-228 is 1 pCi/L and 1 pCi/L, respectively.
<br />(i) Assuming treating the entire production by IE and RO, which can remove all contaminants listed in the above table to below the detectable levels.
<br />J:\2605\2605-004 - Santa Ana 2025 PHG\Santa Ana_phgtable_2025_Final.xlsx
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