EWG Tap Water Database 2009

	This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is	0 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	17 days
Tests ConductedNumber of individual tests done for this contaminant	175 tests

This Drinking Water System

Test Days Exceeding Health GuidelinesDefinition of what this is

0 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

17 days

Tests ConductedNumber of individual tests done for this contaminant

175 tests

Contaminant	Average/ Maximum Result	Health Limit Exceeded	Legal Limit Exceeded	Testing History -Tested -Detected -Over Health Guidelines -Over Legal Limit*
Tin (total)Tin is a metal that enters water from corrosion of household plumbing that contains bronze, pewter or solder components, erosion of natural deposits, and due to widespread use of tin-containing antimicrobials.	47.92 ppb 75.3 ppb	No	Legal at any levelThis is the Federal Limit. State Limits may be lower.
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*

Tin (total)Tin is a metal that enters water from corrosion of household plumbing that contains bronze, pewter or solder components, erosion of natural deposits, and due to widespread use of tin-containing antimicrobials.

47.92 ppb
75.3 ppb

Legal at any levelThis is the Federal Limit. State Limits may be lower.

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.

Testing Date

Average
Result

Samples taken that day

Number of Non-Detects

Range of Results

2008-12-01

49.2 ppb

43 to 61 ppb

2008-09-02

59.8 ppb

41 to 110 ppb

2008-06-02

66 ppb

47 to 88 ppb

2008-03-05

65.1 ppb

54 to 78 ppb

2007-12-06

75.3 ppb

65 to 87 ppb

2007-09-04

40.5 ppb

31 to 56 ppb

2007-06-04

39.4 ppb

27 to 55 ppb

2007-03-19

10.18 ppb

0 to 48 ppb

2005-12-13

43.6 ppb

29 to 59 ppb

2005-09-06

37.7 ppb

30 to 49 ppb

2005-06-06

40.4 ppb

21 to 89 ppb

2005-03-02

63 ppb

52 to 72 ppb

2004-12-01

51 ppb

43 to 61 ppb

2004-09-01

61.18 ppb

14 to 100 ppb

2004-07-13

35.17 ppb

27 to 55 ppb

2004-06-14

42.91 ppb

29 to 85 ppb

2004-06-01

34.18 ppb

24 to 49 ppb

National Drinking Water Database

Saint Paul Regional Water Services Utilities - Saint Paul, MN

Tin (total)

Testing Summary

Testing History

Health Based and Legal Limits for Tin (total)

Health Based Limits for Tin (total)

Testing Results

Health/Toxics

Farming

Natural Resources

Energy Choices