Diamond Point Water System

EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the Washington State Department of Health, 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 2021 - March 2021), tap water provided by this water utility was in compliance with federal health-based drinking water standards.

Utility Details

Grant County, Washington
Serves: 100
Data available: 2013-2019^*
Source: Groundwater

* 2013 testing is for chemicals in EPA's Third Unregulated Contaminant Monitoring Rule (UCMR-3) only.

Contaminants Detected

EXCEED
EWG HEALTH
GUIDELINES

8 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.

What To Do

Filter contaminants out Contact Your Local Official What About Lead?

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EWG Health Guidelines fill the gap in outdated government standards.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

VIEW: EXCEED GUIDELINES OTHER DETECTED

Nitrate

Potential Effect: cancer26x EWG'S HEALTH GUIDELINE

THIS UTILITY3.69 ppm

EWG HEALTH GUIDELINE0.14 ppm

LEGAL LIMIT10 ppm

DETAILS

Radium, combined (-226 & -228)

Potential Effect: cancer4.3x EWG'S HEALTH GUIDELINE

THIS UTILITY0.21 pCi/L

EWG HEALTH GUIDELINE0.05 pCi/L

LEGAL LIMIT5 pCi/L

DETAILS

Includes chemicals detected in 2017-2019 for which annual utility averages exceeded an EWG-selected health guideline established by a federal or state public health authority; radiological contaminants detected between 2014 and 2019.

Chlorodifluoromethane

THIS UTILITY0.0700 ppb

NO EWG HEALTH GUIDELINE

NO LEGAL LIMIT

DETAILS

DCPA di-acid degradate

THIS UTILITY0.149 ppb

NO EWG HEALTH GUIDELINE

NO LEGAL LIMIT

DETAILS

Manganese

THIS UTILITY75.6 ppb

EWG HEALTH GUIDELINE100 ppb

NO LEGAL LIMIT

DETAILS

Molybdenum

THIS UTILITY8.21 ppb

EWG HEALTH GUIDELINE40 ppb

NO LEGAL LIMIT

DETAILS

Strontium

THIS UTILITY0.290 ppb

EWG HEALTH GUIDELINE1,500 ppb

NO LEGAL LIMIT

DETAILS

Vanadium

THIS UTILITY21.9 ppb

EWG HEALTH GUIDELINE21 ppb

NO LEGAL LIMIT

DETAILS

Includes chemicals detected in 2017-2019 for which annual utility averages were lower than an EWG-selected health guideline established by a federal or state public health authority; chemicals detected under the EPA's Unregulated Contaminant Monitoring Rule (UCMR 3) program in 2013 to 2015 (and subsequent testing when available), for which annual utility averages were lower than an EWG-selected health guideline established by a federal or state public health authority.

Other Contaminants Tested

Chemicals tested for but not detected from 2014 to 2019:

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-Butadiene , 1,3-Dichloropropane , 1,3-Dichloropropene , 1,4-Dioxane , 2,2-Dichloropropane , 2,4,5-T , 2,4,5-TP (Silvex) , 2,4-D , 2,4-DB , 4,4'-dde , Acenaphthene , Acenaphthylene , Acifluorfen (Blazer) , Alachlor (Lasso) , Aldrin , Anthracene , Atrazine , Bentazon (Basagran) , Benzene , Benzoic acid , Benzo[a]anthracene , Benzo[a]pyrene , Benzo[b]fluoranthene , Benzo[g,h,i]perylene , Benzo[k]fluoranthene , Bromacil , Bromobenzene , Bromochloromethane , Bromodichloromethane , Bromoform , Bromomethane , Butachlor , Butyl benzyl phthalate , Carbon tetrachloride , Chloramben , Chlorate , Chlordane , Chloroethane , Chloroform , Chloromethane , Chromium (hexavalent) , Chromium (total) , Chrysene , cis-1,2-Dichloroethylene , cis-1,3-Dichloropropene , Cobalt , Cyanazine (Bladex) , Dalapon , Di(2-ethylhexyl) adipate , Di(2-ethylhexyl) phthalate , Di-n-butyl phthalate , Diazinon (Spectracide) , Dibenz[a,h]anthracene , Dibromochloromethane , Dibromomethane , Dicamba , Dichlorodifluoromethane , Dichloromethane (methylene chloride) , Dichlorprop , Dieldrin , Diethyl phthalate , Dimethyl phthalate , Dinoseb , Endrin , EPTC (Eptam) , Ethylbenzene , Ethylene dibromide , Fluoranthene , Fluorene , Germanium , Heptachlor , Heptachlor epoxide , Hexachlorobenzene (HCB) , Hexachlorobutadiene , Hexachlorocyclopentadiene , Indeno[1,2,3-cd]pyrene , Isopropylbenzene , Lindane , m-Dichlorobenzene , Malathion , Methoxychlor , Metolachlor , Metribuzin , Molinate , Monochlorobenzene (chlorobenzene) , n-Butylbenzene , n-Propylbenzene , Naphthalene , o-Chlorotoluene , o-Dichlorobenzene , p-Chlorotoluene , p-Dichlorobenzene , p-Isopropyltoluene , Para-para DDT , Pentachlorophenol , Perfluorobutane sulfonate (PFBS) , Perfluoroheptanoic acid (PFHPA) , Perfluorohexane sulfonate (PFHXS) , Perfluorononanoic acid (PFNA) , Perfluorooctane sulfonate (PFOS) , Perfluorooctanoic acid (PFOA) , Phenanthrene , Picloram , Polychlorinated biphenyls (PCBs) , Prometon , Propachlor , Pyrene , sec-Butylbenzene , Simazine , Styrene , Tellurium , Terbacil , tert-Butylbenzene , Tetrachloroethylene (perchloroethylene) , Toluene , Toxaphene , trans-1,2-Dichloroethylene , trans-1,3-Dichloropropene , Trichloroethylene , Trichlorofluoromethane , Trifluralin , Vinyl chloride , Xylenes (total)