The Power of Information

National Drinking Water Database


Utah


434 systems serving 3,802,780 people

This drinking water quality report shows results of tests conducted by water utilities in Utah, provided to the Environmental Working Group (EWG) by the Utah Department of Environmental Quality. It is part of EWG's national database that includes 47,667 drinking water utilities and 20 million test results from 45 states and the District of Columbia. Water utilities nationwide detected more than 300 pollutants between 2004 and 2009. More than half of these chemicals are unregulated, legal in any amount. Despite this widespread contamination, the federal government invests few resources in protecting rivers, reservoirs, and groundwater from pollution in the first place. The information below summarizes drinking water quality for this state.

The state water agency did not respond to requests for water quality tests conducted after 2006. Results from earlier data requests are shown below



 
Chemicals
Water Utilities
Population Served
Detected Chemicals
50
434
3,731,947
Exceed health guidelines*
33
356
3,696,280
Exceed Legal Limits*
15
60
702,035
Unregulated chemicals detected
3
3
8,129
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

33 Contaminants Exceeding Health Based Limits

Contaminants detected in Utah drinking water above health guidelines, according to an Environmental Working Group analysis of data obtained from state water authorities

Contaminant
Population
Number of Systems
At Any Level Above Health Limits At Any Level Above Health Limits
Bromodichloromethane3,374,0043,374,004180180
Total haloacetic acids (HAAs)3,373,4473,309,597164159
Dibromochloromethane3,308,5043,306,454175174
Total trihalomethanes (TTHMs)3,495,1432,999,417220112
Chloroform3,370,7942,936,53117279
Dichloroacetic acid2,789,3062,789,306118118
Arsenic (total)2,379,4922,379,492220220
Alpha particle activity (excl radon and uranium)2,242,7272,242,727201201
Bromoform1,392,0641,392,064104104
Thallium (total)1,081,6231,081,6232929

Water Utilities in Utah Reporting Chemicals Exceeding Health Guidelines

Water utilities in Utah reporting chemicals exceeding health guidelines, according to an Environmental Working Group analysis of data obtained from state water authorities, include:

System
Population
Chemicals tested
Chemicals found
Chemicals exceeding
health guidelines
St. George City70,0001212112
Park City7,5001142212
Sandy City Water System99,7501122112
Jordan Valley Water Conservancy District82,5001272612
Hill Air Force Base21,000881712
Taylorsville-Bennion Wid67,0001172111
Kearns Improvement District46,0001111711
Draper Irrigation Company28,0001131811
Weber Basin Water Conservancy District298,0001132110
Rockville Pipeline Co1951171910
Mountain Regional Water Ssd6,4001192210
Herriman City17,0001131810
Salt Lake City Department of Public Utilities312,0001132210
Riverton City Water System30,0001171810
Granger-Hunter Impr Distr106,0001101710
Green River9731131710
North Salt Lake6,4741182010
Farmington City12,8001121710
Centerville City16,0001182110
Angell Springs Ssd21059159

Sources of Utah Drinking Water Contaminants

The contaminants identified in Utah drinking water come from a wide variety of sources, including agriculture, industry, water treatment plants, and polluted storm runoff from urban areas.

50Total Contaminants Detected (2004 - 2006)
10Agricultural Pollutants
(pesticides, fertilizer, factory farms)

Arsenic (total), Cyanide, Nitrate & nitrite, Nitrate, Nitrite, Selenium (total), 3-Hydroxycarbofuran, Foaming agents (surfactants), p-Dichlorobenzene, Ethylbenzene

18Sprawl and Urban Pollutants
(road runoff, lawn pesticides, human waste)

Arsenic (total), Cadmium (total), Copper, Cyanide, Lead (total), Mercury (total inorganic), Nitrate & nitrite, Nitrate, Nitrite, Silver (total), Antimony (total), Di(2-Ethylhexyl) adipate, Naphthalene, Foaming agents (surfactants), Xylenes (total), Dichloromethane (methylene chloride), p-Dichlorobenzene, Tetrachloroethylene

37Industrial Pollutants

Arsenic (total), Barium (total), Cadmium (total), Chromium (total), Cyanide, Lead (total), Manganese, Mercury (total inorganic), Nitrate & nitrite, Nitrate, Nitrite, Selenium (total), Silver (total), Antimony (total), Beryllium (total), Thallium (total), Asbestos, Di(2-Ethylhexyl) adipate, Di(2-ethylhexyl) phthalate, Hexachlorobutadiene, Naphthalene, Foaming agents (surfactants), Xylenes (total), Dichloromethane (methylene chloride), p-Dichlorobenzene, Vinyl chloride, Trichloroethylene, Tetrachloroethylene, Toluene, Ethylbenzene, Styrene, Alpha particle activity (excl radon and uranium), Combined Radium (-226 & -228), Radium-226, Radium-228, Alpha particle activity, Gross beta particle activity (pCi/L)

15Water Treatment and Distribution Byproducts
(pipes and fixtures, treatment chemicals and byproducts)

Total trihalomethanes (TTHMs), Total haloacetic acids (HAAs), Chloroform, Bromodichloromethane, Dibromochloromethane, Dichloroacetic acid, Trichloroacetic acid, Bromoform, Dibromoacetic acid, Monochloroacetic acid, Monobromoacetic acid, Di(2-ethylhexyl) phthalate, Cadmium (total), Vinyl chloride, Asbestos

19Naturally Occurring
(naturally present but increased for lands denuded by sprawl, agriculture, or industrial development)

Arsenic (total), Barium (total), Chromium (total), Copper, Cyanide, Lead (total), Manganese, Mercury (total inorganic), Nitrate & nitrite, Nitrate, Nitrite, Selenium (total), Silver (total), Alpha particle activity (excl radon and uranium), Combined Radium (-226 & -228), Radium-226, Radium-228, Alpha particle activity, Gross beta particle activity (pCi/L)

4Unregulated Contaminants
EPA has not established a maximum legal limit in tapwater for these contaminants

Lead (total), 3-Hydroxycarbofuran, Hexachlorobutadiene, Naphthalene


Testing Summary for Utah

The federal government has set standards for some of the pollutants found in tap water supplies.

Contaminants reported as tested by water suppliers in Utah132
 Contaminants tested due to federal law: 86
 Contaminants tested in addition to those required by federal law: 46

Violation Summary for Utah

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Utah since 2004

Violation TypeNumber of Violations
Failure to monitor regularly3,644
Failure to monitor, Routine Major (Coliform bacteria)223
Maximum contaminant level, Monthly (Coliform bacteria)220
Monitoring and Reporting Disinfection Byproduct Rule139
Failure to monitor, Routine Minor (Coliform bacteria)118
Follow-up and Routine Tap Sampling107
Failure to monitor, Repeat Major (Coliform bacteria)62
Failure to notify public of violation20
Failure to monitor, Repeat Minor (Coliform bacteria)14
Public Notification Violation for National Primary Drinking Water Regulations9
Maximum contaminant level, Acute (Coliform bacteria)9
Treatment Technique Precursor Removal5
Initial Tap Sampling for Lead and Copper3