The Power of Information

National Drinking Water Database


Meridian Heights Water District - Olympia, WA


Serves 130 people - Test data available: 2004-2006

This drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group (EWG) by the Washington State Department of Health. It is part of EWG's national database that includes 47,667 drinking water utilities and 20 million test results. 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 to protecting rivers, reservoirs, and groundwater from pollution in the first place. The information below summarizes test results for this utility and lists potential health concerns.

The Washington State Department of Health did not respond to requests for more recent test data. Contact your water utility for the latest water quality report.

 
This Drinking Water System
National Average
Exceed Health GuidelinesTests showing chemicals at concentrations above health guidelines established by federal and state health agencies. These guidelines are typically set at a levels that pose no significant health risk.
1 chemicals
4
Health Standard ExceedencesChemicals detected at concentrations above the legal limit, the Maximum Contaminant Level (MCLs) established by the U.S. EPA. 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.
0 chemicals
0.5
Pollutants FoundThe total number of contaminants detected since 2004, according to data provided by the state water agency.
7 chemicals
8
Tests ConductedThe total number of number of water quality tests conducted by water utilities and recorded in data provided by the state water agency.
196 tests
420

Contaminants Exceeding Health Guidelines

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Lead (total)Lead is a metal that enters water by corrosion of household plumbing systems, discharge of industrial pollution and erosion of natural deposits.1 ppb
1 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
NOTE: Each dot in the above graph represents one month.
* 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.

Other Detected Contaminants

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Nitrate & nitriteNitrate and nitrite enter water from fertilizer runoff, leaching from septic tanks, and erosion of natural deposits.2.09 ppm
2.4 ppm
No
10 ppm
No
10 ppm
DichlorodifluoromethaneDichlorodifluoromethane (Freon 12) is a chlorofluorocarbon refrigerant and aerosol spray propellant; it was banned under the Montreal Protocol as of 2000 because of its ozone-depleting properties.3.1 ppb
3.9 ppb
No
1000 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
TrichlorofluoromethaneTrichlorofluoromethane (Freon 11) is a refrigerant, solvent, chemical intermediate and halocarbon aerosol that was banned in 2000 under the Montreal Protocol because of its ozone-depleting properties.0.43 ppb
0.5 ppb
No
700 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
1,1-Dichloroethane1,1-Dichloroethane is used in industrial chemical synthesis, as a solvent for plastics, paint, varnish, and finish removers and as an insecticide/fumigant.0.3 ppb
0.5 ppb
No
3 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
1,1,1-Trichloroethane1,1,1-Trichloroethane is an industrial cleaning solvent that contaminates drinking water sources due to releases from metal degreasing sites and chemicals factories.0.1 ppb
0.2 ppb
No
200 ppb
No
200 ppb
CopperCopper is a naturally occuring metal and drinking water contaminant that enters tap water by corrosion of household plumbing systems and erosion of natural deposits.221.6 ppb
221.6 ppb
No
300 ppb
No
1000 ppb
NOTE: Each dot in the above graph represents one month.
* 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.

Contaminants Not Detected - 57 chemicals

1,1,1,2-Tetrachloroethane, 1,1,2,2-Tetrachloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene, 1,1-Dichloropropene, 1,2 Dibromo-3-chloropropane (DBCP), 1,2,3-Trichlorobenzene, 1,2,3-Trichloropropane, 1,2,4-Trichlorobenzene, 1,2,4-Trimethylbenzene, 1,2-Dichloroethane, 1,2-Dichloropropane, 1,3,5-Trimethylbenzene, 1,3-Dichloropropane, 2,2-Dichloropropane, Benzene, Bromobenzene, Bromochloromethane, Bromodichloromethane, Bromoform, Bromomethane, Carbon tetrachloride, Chloroethane, Chloroform, Chloromethane, cis-1,2-Dichloroethylene, cis-1,3-Dichloropropene, Dibromochloromethane, Dibromomethane, Dichloromethane (methylene chloride), Ethylbenzene, Ethylene dibromide (EDB), Hexachlorobutadiene, Isopropylbenzene, m- & p- Xylene, m-Dichlorobenzene, Monochlorobenzene (Chlorobenzene), n-Butylbenzene, n-Propylbenzene, Naphthalene, o-Chlorotoluene, o-Dichlorobenzene, o-Xylene, p-Chlorotoluene, p-Dichlorobenzene, p-Isopropyltoluene, sec-Butylbenzene, Styrene, tert-Butylbenzene, Tetrachloroethylene, Toluene, Total trihalomethanes (TTHMs), trans-1,2-Dichloroethylene, trans-1,3-Dichloropropene, Trichloroethylene, Vinyl chloride, Xylenes (total)

Pollution Summary

7Total Contaminants Detected (2004 - 2006)

Copper, Lead (total), Nitrate & nitrite, Dichlorodifluoromethane, Trichlorofluoromethane, 1,1-Dichloroethane, 1,1,1-Trichloroethane

1Agricultural Pollutants
(pesticides, fertilizer, factory farms)

Nitrate & nitrite

4Sprawl and Urban Pollutants
(road runoff, lawn pesticides, human waste)

Copper, Lead (total), Nitrate & nitrite, Trichlorofluoromethane

6Industrial Pollutants

Lead (total), Nitrate & nitrite, Dichlorodifluoromethane, Trichlorofluoromethane, 1,1-Dichloroethane, 1,1,1-Trichloroethane

0Water Treatment and Distribution Byproducts
(pipes and fixtures, treatment chemicals and byproducts)

3Naturally Occurring
(naturally present but increased for lands denuded by sprawl, agriculture, or industrial development)

Copper, Lead (total), Nitrate & nitrite

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

Lead (total), Dichlorodifluoromethane, Trichlorofluoromethane, 1,1-Dichloroethane

EPA Violation Summary

Violation CategoryNumber of Violations
MCL and Treatment
(click see violations)
1

Information on violations is drawn directly from EPA's national violations database in the Agency's Safe Drinking Water Information System. Analyses by others have raised questions about the quality of the information in EPA's database. For the purposes of this investigation, EWG is not showing below or including in our analyses, those violations for individual water suppliers that occurred on days for which the total number of violations assigned by EPA to that water supplier was greater than 20. This criteria was based on common characteristics of incorrect violations data as identified by water utilities, from a review of EPA's violations data by several hundred utilities prior to the release of EWG's investigation.