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EWG's Tap Water Database — 2019 UPDATE

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Carter Lake Filter Plant

EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the Colorado Department of Public Health & Environment, as well as information from the U.S. EPA Enforcement and Compliance History database (ECHO). For the latest quarter assessed by the U.S. EPA (January 2019 - March 2019), tap water provided by this water utility was in compliance with federal health-based drinking water standards.

Utility Details

  • Larimer County, Colorado
  • Data available: 2012—2017
  • Source: Surface water

Contaminants Detected

2

EXCEED
EWG HEALTH
GUIDELINES

5 Total Contaminants

  • Legal does not necessarily equal safe. Getting a passing grade from the federal government does not mean the water meets the latest health guidelines.
  • Legal limits for contaminants in tap water have not been updated in almost 20 years.
  • The best way to ensure clean tap water is to keep pollution out of source water in the first place.

Legal ≠ Safe

EWG Health Guidelines fill the gap in outdated government standards.

The federal government’s legal limits are not health-protective. The EPA has not set a new tap water standard in almost 20 years, and some standards are more than 40 years old.

Contaminants Detected

Chlorite

Potential Effect: change in blood chemistry4.6x EWG'S HEALTH GUIDELINE
THIS UTILITY229.7 ppb
EWG HEALTH GUIDELINE50 ppb
LEGAL LIMIT1,000 ppb
DETAILS
X

Chlorite is a disinfection byproduct resulting from water treatment with chlorine dioxide. Chlorite decreases hemoglobin levels and causes other hematologic effects.

Chlorite was found at 4.6 times above EWG's Health Guideline.

EWG Health Guideline

50 ppb or less

This Utility

229.7 ppb

Legal Limit

1,000 ppb

National Average

212.6 ppb

State Average

289.7 ppb
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2015-2017.
ppb = parts per billion

Health Risks

The EWG Health Guideline of 50 ppb for chlorite was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against change in blood chemistry.

Pollution Sources

industry icon

Industry

water treatment icon

Treatment Byproducts

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Thallium

Potential Effect: harm to internal organs5.7x EWG'S HEALTH GUIDELINE
THIS UTILITY0.567 ppb
EWG HEALTH GUIDELINE0.1 ppb
LEGAL LIMIT2 ppb
DETAILS
X

Thalium is a naturally occurring metal released into the environment from metal smelting and coal burning. Exposure to too much thalium can cause hair loss, liver damage, reduced sperm motility and nervous system impairment.

Thallium was found at 5.7 times above EWG's Health Guideline.

EWG Health Guideline

0.1 ppb or less

This Utility

0.567 ppb

Legal Limit

2 ppb

National Average

0.00649 ppb

State Average

0.00437 ppb
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2015-2017.
ppb = parts per billion

Health Risks

The EWG Health Guideline of 0.1 ppb for thallium was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

Pollution Sources

industry icon

Industry

Filtering Options

reverse osmosis icon

Reverse Osmosis

ion exchange icon

Ion Exchange

Includes chemicals detected in 2015-2017 for which annual utility averages exceeded an EWG-selected health guideline established by a federal or state public health authority.


Other Contaminants Tested


Contaminants detected between 2012 and 2014 and were not part of EPA's UCMR-3 testing program or radiologicals:

Haloacetic acids (HAA5), Chloroform, Bromodichloromethane, Total trihalomethanes (TTHMs)

 

Chemicals tested for but not detected from 2012 to 2017:

1,1,1,2-Tetrachloroethane, 1,1,1-Trichloroethane, 1,1,2,2-Tetrachloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethane, 1,1-Dichloroethylene, 1,1-Dichloropropene, 1,2,3-Trichlorobenzene, 1,2,3-Trichloropropane, 1,2,4-Trichlorobenzene, 1,2,4-Trimethylbenzene, 1,2-Dibromo-3-chloropropane (DBCP), 1,2-Dichloroethane, 1,2-Dichloropropane, 1,3,5-Trimethylbenzene, 1,3-Dichloropropane, 1,3-Dichloropropene, 2,2-Dichloropropane, 2,4,5-TP (Silvex), 2,4-D, Alachlor (Lasso), Aldicarb, Aldicarb sulfone, Aldicarb sulfoxide, Antimony, Arsenic, Atrazine, Benzene, Benzo[a]pyrene, Beryllium, Bromobenzene, Bromochloromethane, Bromoform, Bromomethane, Cadmium, Carbofuran, Carbon tetrachloride, Chlordane, Chloroethane, Chloromethane, Chromium (total), cis-1,2-Dichloroethylene, Dalapon, Di(2-ethylhexyl) adipate, Di(2-ethylhexyl) phthalate, Dibromochloromethane, Dibromomethane, Dichlorodifluoromethane, Dichloromethane (methylene chloride), Dinoseb, Diquat, Endothall, Endrin, Ethylbenzene, Ethylene dibromide, Glyphosate, Heptachlor, Heptachlor epoxide, Hexachlorobenzene (HCB), Hexachlorobutadiene, Hexachlorocyclopentadiene, Isopropylbenzene, Lindane, m-Dichlorobenzene, Mercury (inorganic), Methoxychlor, Monochlorobenzene (chlorobenzene), n-Butylbenzene, n-Propylbenzene, Naphthalene, o-Chlorotoluene, o-Dichlorobenzene, Oxamyl (Vydate), p-Chlorotoluene, p-Dichlorobenzene, p-Isopropyltoluene, Pentachlorophenol, Picloram, Polychlorinated biphenyls (PCBs), sec-Butylbenzene, Selenium, Simazine, Styrene, tert-Butylbenzene, Tetrachloroethylene (perchloroethylene), Toluene, Toxaphene, trans-1,2-Dichloroethylene, Trichloroethylene, Trichlorofluoromethane, Vinyl chloride, Xylenes (total)

Carter Lake Filter Plant compliance with legally mandated federal standards:

  • From April 2016 to March 2019, Carter Lake Filter Plant complied with health-based drinking water standards.
  • Exceeded EPA's Lead Action Level in the last five years:
    YES
  • 4 QUARTERS
    in violation of any federal drinking water standard from April 2016 to March 2019

Information in this section on Carter Lake Filter Plant comes from the U.S. EPA Enforcement and Compliance History Online database (ECHO).

LEARN MORE ABOUT THIS UTILITY

Water Filters That Can Reduce Contaminant Levels

ContaminantActivated Carbonactivated carbonReverse Osmosisreverse osmosisIon Exchangeion exchange
CONTAMINANTS ABOVE
HEALTH GUIDELINES
Chlorite
Thallium
OTHER CONTAMINANTS
DETECTED
Barium
Fluoride
Nitrate

Take Action

Contact Your Local Official

One of the best ways to push for cleaner water is to hold accountable the elected officials who have a say in water quality – from city hall and the state legislature to Congress all the way to the Oval Office – by asking questions and demanding answers.

LEARN MORE

Filter Out Contaminants

Check out our recommendations for filters to protect your water against the detected contaminants.

EWG’S WATER FILTER GUIDE