Public Water System: North Marin Water District

MyTapWater.org's tap water quality report is the compilation of data collected from federal, state, and local government agencies, most prominently the EPA. We strive to populate the report with the latest data concerning water contaminants, lead and copper levels, and water quality violations. We only collect drinking water data from public water systems.

PWS Service Information
PWS ID: CA2110003
Type: Community water system
EPA Region: 09
Primary Service Area: Wholesaler of Water
Primary Source: Surface water
Population Served: 61,500
Contact Information
MCINTYRE, DREW
MCINTYRE, DREW
P.O. Box 146
NOVATO, CA 94948

This public water system services 1 zip code in 1 municipality in 1 county.

Summary Results


A summary view of the the times a water contaminant was tested and found to exceed the level set by the EPA (the MCL).

Maximum Contaminant Levels Exceeded (by year):

2013   (0) 2014   (0) 2015   (1)
chlorate

Contaminant Detailed Results


This a view of violations of maximum contaminant levels. In the expanded view you can see each know test date for a given contaminant, the result of the test, the minimum level that can be recognized in a test (MRL), and upper limit that is considered healthy (HRL).

chlorate
Is this in your home's pipes?

Year Test Date MRL HRL Test Result
2015 2015-07-07 20 210 130
2015 2015-07-07 20 210 130
2015 2015-07-07 20 210 240
2015 2015-04-07 20 210 < 20
2015 2015-04-07 20 210 150
2015 2015-04-07 20 210 200
2015 2015-04-07 20 210 210
2014 2014-10-23 20 210 < 20
2014 2014-10-23 20 210 < 20

Other Water Contaminants Tested


The following contaminants were tested and within national EPA guidelines.

The last mile of pipe makes a big difference, learn more about testing your water.

Contaminant MRL HRL Avg Result
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.02 0.07 < 0.02
2015 2015-04-07 0.02 0.07 < 0.02
2015 2015-04-07 0.02 0.07 < 0.02
2014 2014-10-23 0.02 0.07 < 0.02
chromium 0.2 100 0.3378 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.2 100 0.33
2015 2015-07-07 0.2 100 0.26
2015 2015-07-07 0.2 100 0.21
2015 2015-04-07 0.2 100 0.48
2015 2015-04-07 0.2 100 0.35
2015 2015-04-07 0.2 100 0.25
2015 2015-04-07 0.2 100 0.24
2014 2014-10-23 0.2 100 0.5
2014 2014-10-23 0.2 100 0.42
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.02 0 < 0.02
2015 2015-04-07 0.02 0 < 0.02
2015 2015-04-07 0.02 0 < 0.02
2014 2014-10-23 0.02 0 < 0.02
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.01 0 < 0.01
2015 2015-04-07 0.01 0 < 0.01
2015 2015-04-07 0.01 0 < 0.01
2014 2014-10-23 0.01 0 < 0.01
vanadium 0.2 21 0.5022 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.2 21 0.5
2015 2015-07-07 0.2 21 0.45
2015 2015-07-07 0.2 21 < 0.2
2015 2015-04-07 0.2 21 0.81
2015 2015-04-07 0.2 21 0.46
2015 2015-04-07 0.2 21 0.31
2015 2015-04-07 0.2 21 < 0.2
2014 2014-10-23 0.2 21 1
2014 2014-10-23 0.2 21 0.99
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.04 0.07 < 0.04
2015 2015-04-07 0.04 0.07 < 0.04
2015 2015-04-07 0.04 0.07 < 0.04
2014 2014-10-23 0.04 0.07 < 0.04
strontium 0.3 1500 195.5556 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.3 1500 200
2015 2015-07-07 0.3 1500 190
2015 2015-07-07 0.3 1500 180
2015 2015-04-07 0.3 1500 240
2015 2015-04-07 0.3 1500 200
2015 2015-04-07 0.3 1500 180
2015 2015-04-07 0.3 1500 160
2014 2014-10-23 0.3 1500 210
2014 2014-10-23 0.3 1500 200
chromium-6 0.03 0 0.2211 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.03 0 0.24
2015 2015-07-07 0.03 0 0.19
2015 2015-07-07 0.03 0 < 0.03
2015 2015-04-07 0.03 0 0.4
2015 2015-04-07 0.03 0 0.26
2015 2015-04-07 0.03 0 0.16
2015 2015-04-07 0.03 0 0.1
2014 2014-10-23 0.03 0 0.34
2014 2014-10-23 0.03 0 0.3
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.03 0 < 0.03
2015 2015-04-07 0.03 0 < 0.03
2015 2015-04-07 0.03 0 < 0.03
2014 2014-10-23 0.03 0 < 0.03
molybdenum 1 40 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 1 40 < 1
2015 2015-07-07 1 40 < 1
2015 2015-07-07 1 40 < 1
2015 2015-04-07 1 40 < 1
2015 2015-04-07 1 40 < 1
2015 2015-04-07 1 40 < 1
2015 2015-04-07 1 40 < 1
2014 2014-10-23 1 40 < 1
2014 2014-10-23 1 40 < 1
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.08 0 < 0.08
2015 2015-04-07 0.08 0 < 0.08
2015 2015-04-07 0.08 0 < 0.08
2014 2014-10-23 0.08 0 < 0.08
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.03 6.14 < 0.03
2015 2015-04-07 0.03 6.14 < 0.03
2015 2015-04-07 0.03 6.14 < 0.03
2014 2014-10-23 0.03 6.14 < 0.03
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.2 2.69 < 0.2
2015 2015-04-07 0.2 2.69 < 0.2
2015 2015-04-07 0.2 2.69 < 0.2
2014 2014-10-23 0.2 2.69 < 0.2
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.2 140 < 0.2
2015 2015-04-07 0.2 140 < 0.2
2015 2015-04-07 0.2 140 < 0.2
2014 2014-10-23 0.2 140 < 0.2
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.03 0.0004 < 0.03
2015 2015-04-07 0.03 0.0004 < 0.03
2015 2015-04-07 0.03 0.0004 < 0.03
2014 2014-10-23 0.03 0.0004 < 0.03
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.06 90 < 0.06
2015 2015-04-07 0.06 90 < 0.06
2015 2015-04-07 0.06 90 < 0.06
2014 2014-10-23 0.06 90 < 0.06
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.07 0.35 < 0.07
2015 2015-04-07 0.07 0.35 < 0.07
2015 2015-04-07 0.07 0.35 < 0.07
2014 2014-10-23 0.07 0.35 < 0.07
4-androstene-3,17-dione 0.0003 0 < 0.0003 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.0003 0 < 0.0003
2015 2015-04-07 0.0003 0 < 0.0003
2015 2015-04-07 0.0003 0 < 0.0003
2014 2014-10-23 0.0003 0 < 0.0003
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.1 0.0103 < 0.1
2015 2015-04-07 0.1 0.0103 < 0.1
2015 2015-04-07 0.1 0.0103 < 0.1
2014 2014-10-23 0.1 0.0103 < 0.1
17-beta-estradiol 0.0004 0.0009 < 0.0004 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.0004 0.0009 < 0.0004
2015 2015-04-07 0.0004 0.0009 < 0.0004
2015 2015-04-07 0.0004 0.0009 < 0.0004
2014 2014-10-23 0.0004 0.0009 < 0.0004
17-alpha-ethynylestradiol 0.0009 0.035 < 0.0009 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.0009 0.035 < 0.0009
2015 2015-04-07 0.0009 0.035 < 0.0009
2015 2015-04-07 0.0009 0.035 < 0.0009
2014 2014-10-23 0.0009 0.035 < 0.0009
estrone 0.002 0.35 < 0.002 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.002 0.35 < 0.002
2015 2015-04-07 0.002 0.35 < 0.002
2015 2015-04-07 0.002 0.35 < 0.002
2014 2014-10-23 0.002 0.35 < 0.002
estriol 0.0008 0.35 < 0.0008 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.0008 0.35 < 0.0008
2015 2015-04-07 0.0008 0.35 < 0.0008
2015 2015-04-07 0.0008 0.35 < 0.0008
2014 2014-10-23 0.0008 0.35 < 0.0008
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.09 0 < 0.09
2015 2015-04-07 0.09 0 < 0.09
2015 2015-04-07 0.09 0 < 0.09
2014 2014-10-23 0.09 0 < 0.09
testosterone 0.0001 0 < 0.0001 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.0001 0 < 0.0001
2015 2015-04-07 0.0001 0 < 0.0001
2015 2015-04-07 0.0001 0 < 0.0001
2014 2014-10-23 0.0001 0 < 0.0001
equilin 0.004 0.35 < 0.004 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 0.004 0.35 < 0.004
2015 2015-04-07 0.004 0.35 < 0.004
2015 2015-04-07 0.004 0.35 < 0.004
2014 2014-10-23 0.004 0.35 < 0.004
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-07-07 1 70 < 1
2015 2015-07-07 1 70 < 1
2015 2015-07-07 1 70 < 1
2015 2015-04-07 1 70 < 1
2015 2015-04-07 1 70 < 1
2015 2015-04-07 1 70 < 1
2015 2015-04-07 1 70 < 1
2014 2014-10-23 1 70 < 1
2014 2014-10-23 1 70 < 1

Lead and Copper Data


Lead and copper are recorded separately from other contaminants because of the Lead and Copper Rule. As with all other results, these are the findings at the water supply. Lead and copper can be — and often are — added to drinking water in between the water facility and a tap.

Sample ID Contaminant Sampling Start Date Sampling End Date Result
CA43243 lead 2013-01-01 2015-12-31 0mg/L
CA36649 lead 2010-01-01 2012-12-31 0mg/L
211000311230LT5 lead 2011-01-01 2011-12-31 0.005mg/L
CA36022 lead 2007-01-01 2009-12-31 0mg/L

Violations


Known violations of the Safe Drinking Water Act as recorded by the EPA.

Compliance Dates Rule Violation Type Contaminant Name Status
1993-07-01 - 1993-08-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known

What My Water Data Means


Water data isn't always easy to interpret, but by following the links on this page you should be able to have most of your questions answered. By clicking the name of a water contaminant or secondary substance you can learn about that specific substance. Ultimately this page should give you some insight towards learning if your water is safe, what water filter you should buy (if any), and how well your local water compares against other sources.

Sources


The origin of MyTapWater.org's water data is explained on our Data Sources page.

Why Is My Water Data Not More Recent?


The recency of the data for your ZIP code depends on the last your water source was tested, by a federal, state, or local agency. More information about the timing can be determined by learning about the dataset in question and seeing how often the EPA (other another governing body) mandated testing.