EWG Tap Water Database 2009

	This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is	1 days
Test Days Exceeding Legal LimitsNumber of days in which the samples taken in that day exceed the Maximum Contaminant Level (Depending on the contaminant and its MCL, that may or may not trigger an MCL violation. Some MCLs are based on averages spanning several months to a year)	0 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State	1 days
Tests ConductedNumber of individual tests done for this contaminant	1 tests

This Drinking Water System

Test Days Exceeding Health GuidelinesDefinition of what this is

1 days

Test Days Exceeding Legal LimitsNumber of days in which the samples taken in that day exceed the Maximum Contaminant Level (Depending on the contaminant and its MCL, that may or may not trigger an MCL violation. Some MCLs are based on averages spanning several months to a year)

0 days

Test DaysNumber of days in which this chemical has reported results in the data we received from the State

1 days

Tests ConductedNumber of individual tests done for this contaminant

1 tests

Contaminant	Average/ Maximum Result	Health Limit Exceeded	Legal Limit Exceeded	Testing History -Tested -Detected -Over Health Guidelines -Over Legal Limit*
Alpha particle activity (excl radon and uranium)Alpha particles are a form of radiation associated with radioactive mining waste pollutants and natural sources.	2.7 pCi/L 2.7 pCi/L	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 pCi/L	No 15 pCi/L
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.

Contaminant

Average/
Maximum
Result

Health Limit
Exceeded

Legal Limit
Exceeded

Testing History

-Tested

-Detected

-Over Health Guidelines

-Over Legal Limit*

Alpha particle activity (excl radon and uranium)Alpha particles are a form of radiation associated with radioactive mining waste pollutants and natural sources.

2.7 pCi/L
2.7 pCi/L

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 pCi/L

No
15 pCi/L

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.

Standard

Description

Level

Maximum Contaminant Limit Goal (MCLG)

A 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 pCi/L

One in one million (10-6) Cancer Risk

The concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency.

0.15 pCi/L

Maximum Contaminant Limit (MCL)

The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.

15 pCi/L

One in ten thousand (10-4) Cancer Risk

The concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency.

15 pCi/L

Testing Date

Average
Result

Samples taken that day

Number of Non-Detects

Range of Results

2005-11-28

2.7 pCi/L

National Drinking Water Database

Thomas Creek Estates Water Company Utilities - Reno, NV

Alpha particle activity (excl radon and uranium)

Testing Summary

Testing History

Health Based and Legal Limits for Alpha particle activity (excl radon and uranium)

Health Based Limits for Alpha particle activity (excl radon and uranium)

Testing Results

Health/Toxics

Farming

Natural Resources

Energy Choices