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EWG's Tap Water Database — 2019 UPDATE

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Molybdenum

Status: No national drinking water standard exists

 

Molybdenum is a metal that occurs naturally in soil, minerals and water. People who ingest large amounts can have increased levels of uric acid and gout-like symptoms.

2012-2017:

FOUND
FOUND ABOVE HEALTH GUIDELINES

50

states detected

4,543

utilities detected

154 million

people served

7

states over health guideline

20

utilities over health guideline

300,000

people served over health guideline

Health concerns for molybdenum

Change in blood chemistry

Gout

State and national drinking water standards and health guidelines

EWG Health Guideline 40 ppb

The EWG Health Guideline of 40 ppb for molybdenum was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against metabolic changes and excess formation of uric acid in the blood.

ppb = parts per billion

States reporting molybdenum in drinking water

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served UtilitiesPeople Served
California417,66347634,697,124
Texas0066819,531,125
Florida6134,80720812,075,964
Illinois25,70541110,758,715
Ohio110,8673248,313,826
Arizona00925,587,751
Pennsylvania001115,304,024
New York001065,291,155
Colorado001414,275,791
Indiana331,0281413,681,336
Missouri001283,466,203
Kentucky390,1901132,750,718
Virginia00322,748,600
Minnesota00802,684,026
New Jersey00512,440,789
Nevada00242,434,499
Utah00692,400,518
Louisiana00632,358,342
Oklahoma001332,091,131
Kansas001322,090,241
Michigan00851,909,847
Wisconsin00551,877,988
Alabama00481,617,810
Iowa001711,501,389
New Mexico00441,395,576
Washington00561,352,663
Nebraska00351,177,279
South Carolina00591,124,681
Georgia19,274391,071,069
North Carolina0076887,376
Idaho0020704,685
District Of Columbia003648,882
South Dakota00102455,560
North Dakota0022443,197
Montana0041367,988
West Virginia0034335,328
Oregon0021321,808
Connecticut0010256,414
Alaska005241,409
Massachusetts0015229,221
Tennessee0012219,093
Rhode Island008170,197
Wyoming0039169,791
Delaware005155,861
Hawaii006117,059
Maryland006115,667
Mississippi00686,173
Arkansas001040,756
Maine00131,440
Vermont00511,056
New Hampshire00111,000
MORE
LESS

Filtering technologies that reduce molybdenum

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Reverse Osmosis

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Ion Exchange

Utilities with the highest amounts of molybdenum, 2012-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Lake Gibson EstatesLakeland, FL8 of 892.5 ppb1,897
City of California CityCalifornia City, CA24 of 2484.9 ppb14,212
Hillview Water Company-oakhurst/sierra Lakes*Oakhurst, CA12 of 1283.1 ppb2,805
Broadview Terrace Mutual Water CompanyOakhurst, CA12 of 1283.1 ppb510
Sheridan Water WorksSheridan, IN4 of 462.3 ppb2,665
Grandwood Park SubdivisionLibertyville, IL5 of 559.9 ppb5,639
Arden Shores Estates SubdivisionLibertyville, IL1 of 155.5 ppb66
Bluffs Basin Utility CompanyMarion, IN4 of 455.0 ppb36
Marion City Water Works*Marion, IN4 of 455.0 ppb28,327
Owensboro Municipal Utilities*Owensboro, KY6 of 654.6 ppb67,691
City of Punta GordaPunta Gorda, FL2 of 847.4 ppb29,561
CairoCairo, GA4 of 445.8 ppb9,274
Ocud/magnolia Woods Consecutive Water SystemOcoee, FL12 of 1245.3 ppb347
Winter Garden Water Department*Winter Garden, FL12 of 1245.3 ppb69,738
Ocud/partlow Acres(consec.)Winter Garden, FL12 of 1245.3 ppb102
Wapakoneta CityWapakoneta, OH6 of 643.0 ppb10,867
Clermont East Water SystemClermont, FL8 of 842.1 ppb33,162
S E Daviess County Water District*Owensboro, KY8 of 841.1 ppb18,827
Whitesville Water WorksWhitesville, KY8 of 841.1 ppb3,672
E Daviess County Water Assoc Inc*Knottsville, KY4 of 439.0 ppb11,997
US Army Fort IrwinFort Irwin, CA8 of 835.9 ppb16,000
City of Mount DoraMount Dora, FL4 of 434.0 ppb29,996
LindenhurstLindenhurst, IL12 of 1233.2 ppb14,632
Lompoc Water Utility DivisionLompoc, CA12 of 1233.0 ppb39,846
St Marys CitySt. Marys, OH4 of 430.2 ppb10,001
Clarks Hill Water WorksClarks Hill, IN2 of 230.0 ppb660
Highland Lake SubdivisionLibertyville, IL2 of 228.9 ppb303
Southwest Licking Community WaterEtna, OH4 of 428.3 ppb12,088
BuckinghamBuckingham, IL2 of 228.0 ppb300
Groveland Water DepartmentGroveland, FL12 of 1227.6 ppb12,243
City of AuburndaleAuburndale, FL12 of 1225.9 ppb30,761
Cws - LakelandSan Jose, CA26 of 2625.6 ppb686
Southwest/Polk County UtilityLakeland, FL17 of 2025.1 ppb39,209
Huntington Water DepartmentHuntington, IN4 of 424.8 ppb17,300
LawrencevilleLawrenceville, GA8 of 1223.6 ppb30,000
City of GreenfieldGreenfield, CA6 of 623.3 ppb17,898
Minburn WaterworksMinburn, IA4 of 423.1 ppb365
Xenia Rural Water District (woodward)*Bouton, IA4 of 423.1 ppb3,350
Rockland Mobile Home ParkLake Bluff, IL4 of 422.8 ppb74
Richton ParkRichton Park, IL8 of 822.7 ppb12,901
Brook Water Utility*Brook, IN8 of 822.4 ppb986
Newton County Regional Water & SewerMorocco, IN8 of 822.4 ppb130
Lake Utility Services Inc NorthClermont, FL23 of 2322.3 ppb21,518
Mission Springs WDDesert Hot Springs, CA22 of 2222.1 ppb34,626
Suburban Water Systems - La MiradaCovina, CA16 of 1622.1 ppb56,953
Meadowbrook FarmPatterson, NY4 of 421.8 ppb55
Paso Robles Water DepartmentPaso Robles, CA36 of 3721.5 ppb30,500
Bremen Water DepartmentBremen, IN4 of 421.2 ppb4,516
Windermere CommunityPflugerville, TX24 of 2420.0 ppb20,091
Nipomo Comm. Services DistrictNipomo, CA19 of 2019.7 ppb10,867

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Molybdenum, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
City of California CityCalifornia City, CA24 of 2484.9 ppb14,212
Marion City Water Works*Marion, IN4 of 455.0 ppb28,327
Owensboro Municipal Utilities*Owensboro, KY6 of 654.6 ppb67,691
City of Punta GordaPunta Gorda, FL2 of 847.4 ppb29,561
Winter Garden Water Department*Winter Garden, FL12 of 1245.3 ppb69,738
Wapakoneta CityWapakoneta, OH6 of 643.0 ppb10,867
Clermont East Water SystemClermont, FL8 of 842.1 ppb33,162
S E Daviess County Water District*Owensboro, KY8 of 841.1 ppb18,827
E Daviess County Water Assoc Inc*Knottsville, KY4 of 439.0 ppb11,997
US Army Fort IrwinFort Irwin, CA8 of 835.9 ppb16,000
City of Mount DoraMount Dora, FL4 of 434.0 ppb29,996
LindenhurstLindenhurst, IL12 of 1233.2 ppb14,632
Lompoc Water Utility DivisionLompoc, CA12 of 1233.0 ppb39,846
St Marys CitySt. Marys, OH4 of 430.2 ppb10,001
Southwest Licking Community WaterEtna, OH4 of 428.3 ppb12,088
Groveland Water DepartmentGroveland, FL12 of 1227.6 ppb12,243
City of AuburndaleAuburndale, FL12 of 1225.9 ppb30,761
Southwest/Polk County UtilityLakeland, FL17 of 2025.1 ppb39,209
Huntington Water DepartmentHuntington, IN4 of 424.8 ppb17,300
LawrencevilleLawrenceville, GA8 of 1223.6 ppb30,000
City of GreenfieldGreenfield, CA6 of 623.3 ppb17,898
Richton ParkRichton Park, IL8 of 822.7 ppb12,901
Lake Utility Services Inc NorthClermont, FL23 of 2322.3 ppb21,518
Mission Springs WDDesert Hot Springs, CA22 of 2222.1 ppb34,626
Suburban Water Systems - La MiradaCovina, CA16 of 1622.1 ppb56,953
Paso Robles Water DepartmentPaso Robles, CA36 of 3721.5 ppb30,500
Windermere CommunityPflugerville, TX24 of 2420.0 ppb20,091
Nipomo Comm. Services DistrictNipomo, CA19 of 2019.7 ppb10,867
Auburn Water DepartmentAuburn, IN8 of 818.8 ppb12,800
AntiochAntioch, IL16 of 1618.5 ppb13,724
Fairfield County Utilities PWSCarroll, OH4 of 417.9 ppb12,882
West Daviess County Water District*Owensboro, KY4 of 417.8 ppb13,264
City of Hays*Hays, KS4 of 417.5 ppb21,044
Plainfield Water Works*Plainfield, IN8 of 817.5 ppb18,857
City of Gillette*Gillette, WY7 of 717.0 ppb30,121
MoultrieMoultrie, GA6 of 616.8 ppb14,361
Marina Coast Water DistrictMarina, CA16 of 1616.4 ppb31,218
Circleville City PWSCircleville, OH4 of 416.3 ppb13,444
Coachella Water AuthorityCoachella, CA24 of 2416.1 ppb41,904
Military Highway WSC - ProgresoProgreso, TX8 of 816.0 ppb11,136
Grover Beach Water DepartmentGrover Beach, CA16 of 1615.9 ppb13,156
NorthwestLakeland, FL21 of 2315.6 ppb27,904
City of AlamoAlamo, TX8 of 815.5 ppb18,363
Lebanon UtilitiesLebanon, IN8 of 815.3 ppb16,098
City of EustisEustis, FL12 of 1215.3 ppb34,349
City of Mercedes*Mercedes, TX8 of 814.7 ppb15,700
Park ForestPark Forest, IL4 of 414.3 ppb23,462
Arvin Community Services DistrictArvin, CA11 of 1114.1 ppb19,000
Cape GirardeauCape Girardeau, MO8 of 813.9 ppb39,628
South Tahoe PUD - Main*South Lake Tahoe, CA52 of 5613.9 ppb29,500

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Molybdenum, but it likely has the contaminant in its water supply.