Overview

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.

State, National, and Health Guidelines for Drinking Water

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

National Standard Exists

Health Concerns:

Change in blood chemistry
Gout

Want to remove
Molybdenum from your water?

Try these filter technologies:

Reverse Osmosis,

Ion Exchange,

understand filter technology

Molybdenum around the Country

	UTILITIES REPORTING ABOVE HEALTH GUIDELINES		UTILITIES WITH CONTAMINATION
State	Utilities	People Served	Utilities	People Served
California		3	18,145		464	35,711,069
Texas		0	0		625	21,433,550
Florida		1	1,897		192	12,859,083
Illinois		0	0		430	9,725,534
Ohio		0	0		308	8,645,425
Arizona		0	0		82	5,884,147
Pennsylvania		0	0		103	5,639,446
New York		0	0		94	5,240,214
Colorado		0	0		156	4,888,216
Indiana		0	0		131	3,782,158
Missouri		0	0		124	3,558,373
Minnesota		0	0		79	2,936,048
Virginia		0	0		31	2,908,664
Nevada		0	0		20	2,899,122
New Jersey		0	0		60	2,820,998
Utah		0	0		68	2,713,524
Kentucky		0	0		81	2,501,466
Louisiana		0	0		59	2,456,355
Kansas		0	0		110	2,149,025
Oklahoma		0	0		93	2,139,354
Michigan		0	0		85	2,007,404
Wisconsin		0	0		57	1,932,259
Washington		0	0		49	1,827,270
Alabama		0	0		38	1,697,097
Iowa		0	0		185	1,604,328
New Mexico		0	0		37	1,481,126
Nebraska		0	0		37	1,210,217
South Carolina		0	0		59	1,183,368
North Carolina		0	0		67	1,082,386
Georgia		0	0		28	1,062,595
Idaho		0	0		20	852,706
District Of Columbia		0	0		4	667,325
South Dakota		0	0		100	590,426
North Dakota		0	0		18	440,609
Montana		0	0		50	402,260
West Virginia		0	0		36	353,853
Oregon		0	0		22	353,219
Connecticut		0	0		10	278,379
Tennessee		0	0		11	234,839
Alaska		0	0		5	231,280
Massachusetts		0	0		15	229,069
Wyoming		0	0		39	181,015
Rhode Island		0	0		7	164,741
Delaware		0	0		4	149,456
Hawaii		0	0		6	124,262
Maryland		0	0		6	115,667
Mississippi		0	0		6	101,988
Arkansas		0	0		9	45,602
Maine		0	0		1	35,663
Vermont		0	0		6	11,114
New Hampshire		0	0		1	11,000

SHOW LESS

Utilities with the highest amounts of molybdenum, 2013-2023

ALL UTILITIES

LARGE UTILITIES

Utility	Location	Tests	Average level	People served
Lake Gibson Estates	Lakeland, FL	8 of 8	92.5 ppb	1,897
City of California City	California City, CA	24 of 24	84.9 ppb	14,198
Hillview Water Company-oakhurst/sierra Lakes*	Sacramento, CA	12 of 12	83.1 ppb	3,449
Broadview Terrace Mutual Water Company	Oakhurst, CA	12 of 12	83.1 ppb	498
Indiana American Water - Sheridan	Greenwood, IN	4 of 4	62.3 ppb	3,553
Marion City Water Works*	Marion, IN	4 of 4	55.0 ppb	28,327
Bluffs Basin Utility Company	Marion, IN	4 of 4	55.0 ppb	36
Owensboro Municipal Utilities*	Owensboro, KY	6 of 6	54.6 ppb	60,651
City of Punta Gorda	Punta Gorda, FL	2 of 8	47.4 ppb	36,302
Cairo	Cairo, GA	4 of 4	45.8 ppb	9,285
Ocud/partlow Acres(consec.)	Winter Garden, FL	12 of 12	45.3 ppb	49
Winter Garden Water Department*	Winter Garden, FL	12 of 12	45.3 ppb	72,205
Wapakoneta City	Wapakoneta, OH	6 of 6	43.0 ppb	11,000
Clermont East Water System	Clermont, FL	8 of 8	42.1 ppb	36,603
Whitesville Water Works	Whitesville, KY	8 of 8	41.1 ppb	3,672
S E Daviess County Water District*	Owensboro, KY	8 of 8	41.1 ppb	33,655
E Daviess County Water Assoc Inc*	Knottsville, KY	4 of 4	39.0 ppb	12,587
US Army Fort Irwin	Fort Irwin, CA	8 of 8	35.9 ppb	16,000
City of Mount Dora	Mount Dora, FL	4 of 4	34.0 ppb	37,793
Lindenhurst	Lindenhurst, IL	12 of 12	33.2 ppb	14,467
Lompoc City Water Utility Division	Lompoc, CA	12 of 12	33.0 ppb	41,079
Cws - Lakeland	San Jose, CA	19 of 19	32.4 ppb	297
St Marys City	St Marys, OH	4 of 4	30.2 ppb	9,356
Clarks Hill Water Works	Clarks Hill, IN	2 of 2	30.0 ppb	660
Southwest Licking Community Water	Baltimore, OH	4 of 4	28.3 ppb	16,300
Groveland Water Department	Groveland, FL	12 of 12	27.6 ppb	15,232
City of Auburndale	Auburndale, FL	12 of 12	25.9 ppb	35,239
Southwest/Polk County Utility	Lakeland, FL	17 of 20	25.1 ppb	39,209
Huntington Water Department	Huntington, IN	4 of 4	24.8 ppb	17,300
City of Greenfield	Greenfield, CA	6 of 6	23.3 ppb	18,967
Xenia Rural Water District (woodward)*	Bouton, IA	4 of 4	23.1 ppb	3,362
Minburn Waterworks	Bouton, IA	4 of 4	23.1 ppb	325
Woodward Resource Center*	Woodward, IA	4 of 4	23.1 ppb	700
Rockland Mobile Home Park	Chicago, IL	4 of 4	22.8 ppb	165
Richton Park	Richton Park, IL	8 of 8	22.7 ppb	12,500
Brook Water Utility*	Brook, IN	8 of 8	22.4 ppb	986
Newton County Regional Water & Sewer	Morocco, IN	8 of 8	22.4 ppb	130
Lake Utility Services Inc North	Clermont, FL	23 of 23	22.3 ppb	20,839
Mission Springs WD	Desert Hot Springs, CA	22 of 22	22.1 ppb	43,223
Suburban Water Systems - La Mirada	Covina, CA	16 of 16	22.1 ppb	56,793
Meadowbrook Farm	Fishkill, NY	4 of 4	21.8 ppb	55
Paso Robles Water Department	Paso Robles, CA	36 of 37	21.5 ppb	31,221
Bremen Water Department	Bremen, IN	4 of 4	21.2 ppb	4,516
Windermere Community	Pflugerville, TX	24 of 24	20.0 ppb	21,231
Nipomo Comm. Services District	Nipomo, CA	19 of 20	19.7 ppb	13,771
Riverside Mobile Home Court	Spearfish, SD	4 of 4	19.5 ppb	75
Nevada Village Public Water System	Nevada, OH	4 of 4	18.9 ppb	814
Auburn Water Department	Auburn, IN	8 of 8	18.8 ppb	12,800
Hartington, City of	Hartington, NE	10 of 10	18.6 ppb	1,436
Ashkum	Ashkum, IL	3 of 4	18.6 ppb	724

* 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.

Utility	Location	Tests	Average level	People served
City of California City	California City, CA	24 of 24	84.9 ppb	14,198
Marion City Water Works*	Marion, IN	4 of 4	55.0 ppb	28,327
Owensboro Municipal Utilities*	Owensboro, KY	6 of 6	54.6 ppb	60,651
City of Punta Gorda	Punta Gorda, FL	2 of 8	47.4 ppb	36,302
Winter Garden Water Department*	Winter Garden, FL	12 of 12	45.3 ppb	72,205
Wapakoneta City	Wapakoneta, OH	6 of 6	43.0 ppb	11,000
Clermont East Water System	Clermont, FL	8 of 8	42.1 ppb	36,603
S E Daviess County Water District*	Owensboro, KY	8 of 8	41.1 ppb	33,655
E Daviess County Water Assoc Inc*	Knottsville, KY	4 of 4	39.0 ppb	12,587
US Army Fort Irwin	Fort Irwin, CA	8 of 8	35.9 ppb	16,000
City of Mount Dora	Mount Dora, FL	4 of 4	34.0 ppb	37,793
Lindenhurst	Lindenhurst, IL	12 of 12	33.2 ppb	14,467
Lompoc City Water Utility Division	Lompoc, CA	12 of 12	33.0 ppb	41,079
Southwest Licking Community Water	Baltimore, OH	4 of 4	28.3 ppb	16,300
Groveland Water Department	Groveland, FL	12 of 12	27.6 ppb	15,232
City of Auburndale	Auburndale, FL	12 of 12	25.9 ppb	35,239
Southwest/Polk County Utility	Lakeland, FL	17 of 20	25.1 ppb	39,209
Huntington Water Department	Huntington, IN	4 of 4	24.8 ppb	17,300
City of Greenfield	Greenfield, CA	6 of 6	23.3 ppb	18,967
Richton Park	Richton Park, IL	8 of 8	22.7 ppb	12,500
Lake Utility Services Inc North	Clermont, FL	23 of 23	22.3 ppb	20,839
Mission Springs WD	Desert Hot Springs, CA	22 of 22	22.1 ppb	43,223
Suburban Water Systems - La Mirada	Covina, CA	16 of 16	22.1 ppb	56,793
Paso Robles Water Department	Paso Robles, CA	36 of 37	21.5 ppb	31,221
Windermere Community	Pflugerville, TX	24 of 24	20.0 ppb	21,231
Nipomo Comm. Services District	Nipomo, CA	19 of 20	19.7 ppb	13,771
Auburn Water Department	Auburn, IN	8 of 8	18.8 ppb	12,800
Antioch	Antioch, IL	16 of 16	18.5 ppb	14,175
Fairfield County Utilities PWS	Lancaster, OH	4 of 4	17.9 ppb	15,486
City of Hays*	Hays, KS	4 of 4	17.5 ppb	20,795
Plainfield Water Works	Plainfield, IN	8 of 8	17.5 ppb	34,477
City of Gillette*	Gillette, WY	7 of 7	17.0 ppb	32,222
Moultrie	Moultrie, GA	6 of 6	16.8 ppb	17,067
Marina Coast Water District	Marina, CA	16 of 16	16.4 ppb	36,214
Circleville City PWS	Circleville, OH	4 of 4	16.3 ppb	13,965
Coachella Water Authority*	Coachella, CA	24 of 24	16.1 ppb	42,554
Military Highway WSC - Progreso	Progreso, TX	8 of 8	16.0 ppb	11,136
Grover Beach Water Department	Grover Beach, CA	16 of 16	15.9 ppb	12,701
Northwest	Lakeland, FL	21 of 23	15.6 ppb	28,082
City of Alamo	Alamo, TX	8 of 8	15.5 ppb	18,363
Lebanon Utilities	Lebanon, IN	8 of 8	15.3 ppb	16,098
City of Eustis	Eustis, FL	12 of 12	15.3 ppb	38,966
City of Mercedes*	Mercedes, TX	8 of 8	14.7 ppb	16,258
Park Forest	Park Forest, IL	4 of 4	14.3 ppb	21,975
Arvin Community Services District	Arvin, CA	11 of 11	14.1 ppb	19,669
Cape Girardeau	Cape Girardeau, MO	8 of 8	13.9 ppb	39,941
Arizona Water Company - Apache Junction	Phoenix, AZ	8 of 8	13.6 ppb	62,055
South Tahoe PUD - Main*	South Lake Tahoe, CA	90 of 102	13.1 ppb	21,414
City of Buena Park	Buena Park, CA	25 of 25	13.0 ppb	81,998
Lake Utility Services Inc South	Clermont, FL	3 of 4	13.0 ppb	13,198

EWG’s Tap
Water Database

Nitrate in
Tap Water

CONTAMINANT

Molybdenum

STATES DETECTED

50

serves

162 million

utilities detected

4,328

states detected

2

serves

20,042

utilities detected

4

Overview

State, National, and Health Guidelines for Drinking Water

National Standard Exists

Health Concerns:

Want to remove
Molybdenum from your water?

Molybdenum around the Country

Utilities with the highest amounts of molybdenum, 2013-2023

Know the Standards

Take Action

Need help finding a filter?

We’re in this together

Protect your water

EWG’s TapWater Database

CONTAMINANT

Molybdenum

STATES DETECTED

50

serves

162 million

utilities detected

4,328

states detected

2

serves

20,042

utilities detected

4

Overview

State, National, and Health Guidelines for Drinking Water

National Standard Exists

Health Concerns:

Want to removeMolybdenum from your water?

Molybdenum around the Country

Utilities with the highest amounts of molybdenum, 2013-2023

Know the Standards

Take Action

Need help finding a filter?

We’re in this together

Protect your water

EWG’s Tap
Water Database

Want to remove
Molybdenum from your water?