Los Osos Community Services District Water System

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: CA4010016
Type: Community water system
EPA Region: 09
Primary Source: Ground water
Population Served: 7,086 		Contact Information
OSBORNE, RENEE
OSBORNE, RENEE
P.O. Box 6064
LOS OSOS, CA 93412
[email protected]

This public water system services 1 county.

Summary Results

A summary view of tests in which a water contaminant found to exceed the Maximum Contaminant Level (MCL) set by the EPA.

Maximum Contaminant Levels Exceeded (by year):

2013   (0) 2014   (0) 2015   (1) 2016   (0) 2017   (0) 2018   (0)
chlorate

Contaminant Detailed Results

This a view of violations of maximum contaminant levels. Use the expanded view see result data for a drinking water contaminant, the minimum level that can be recognized in a test (MRL), and upper limit that is considered healthy (HRL).

chlorate

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2015 2015-11-02 20 210 < 20
2015 2015-09-21 20 210 295.959
2015 2015-09-21 20 210 126.155
2015 2015-09-21 20 210 195.903
2015 2015-09-21 20 210 327.524
2015 2015-09-21 20 210 192.674
2015 2015-05-06 20 210 160
2015 2015-03-17 20 210 110
2015 2015-03-16 20 210 110
2015 2015-03-16 20 210 66
2015 2015-03-16 20 210 140
2015 2015-03-16 20 210 150

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Other Water Contaminants Tested

The following contaminants were tested and found to be within national EPA guidelines.

Contaminant MRLMinimum Reporting Level HRLHealth Risk Limit Avg Result
chromium 0.2 100 4.3865 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.2 100 2.2
2015 2015-09-21 0.2 100 4.312
2015 2015-09-21 0.2 100 7.185
2015 2015-09-21 0.2 100 9.818
2015 2015-09-21 0.2 100 1.312
2015 2015-09-21 0.2 100 2.411
2015 2015-05-06 0.2 100 1.9
2015 2015-03-17 0.2 100 5.9
2015 2015-03-16 0.2 100 4.2
2015 2015-03-16 0.2 100 9.6
2015 2015-03-16 0.2 100 1.3
2015 2015-03-16 0.2 100 2.5
[+] Expand Test Data
chromium-6 0.03 0 4.6839 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.03 0 2.284
2015 2015-09-21 0.03 0 4.719
2015 2015-09-21 0.03 0 7.859
2015 2015-09-21 0.03 0 10.554
2015 2015-09-21 0.03 0 1.396
2015 2015-09-21 0.03 0 2.595
2015 2015-05-06 0.03 0 1.2
2015 2015-03-17 0.03 0 6.9
2015 2015-03-16 0.03 0 4.7
2015 2015-03-16 0.03 0 10
2015 2015-03-16 0.03 0 1.4
2015 2015-03-16 0.03 0 2.6
[+] Expand Test Data
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 1 70 < 1
2015 2015-09-21 1 70 < 1
2015 2015-09-21 1 70 < 1
2015 2015-09-21 1 70 < 1
2015 2015-09-21 1 70 < 1
2015 2015-09-21 1 70 < 1
2015 2015-05-06 1 70 < 1
2015 2015-03-17 1 70 < 1
2015 2015-03-16 1 70 < 1
2015 2015-03-16 1 70 < 1
2015 2015-03-16 1 70 < 1
2015 2015-03-16 1 70 < 1
[+] Expand Test Data
manganese 1 0 10.0844 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 1 0 1.013
2015 2015-09-21 1 0 < 1
2015 2015-09-21 1 0 < 1
2015 2015-09-21 1 0 < 1
2015 2015-09-21 1 0 < 1
2015 2015-09-21 1 0 < 1
2015 2015-05-06 1 0 120
2015 2015-03-17 1 0 < 1
2015 2015-03-16 1 0 < 1
2015 2015-03-16 1 0 < 1
2015 2015-03-16 1 0 < 1
2015 2015-03-16 1 0 < 1
[+] Expand Test Data
molybdenum 1 40 0.9298 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 1 40 1.932
2015 2015-09-21 1 40 1.126
2015 2015-09-21 1 40 2.352
2015 2015-09-21 1 40 < 1
2015 2015-09-21 1 40 < 1
2015 2015-09-21 1 40 1.348
2015 2015-05-06 1 40 < 1
2015 2015-03-17 1 40 2
2015 2015-03-16 1 40 1.1
2015 2015-03-16 1 40 < 1
2015 2015-03-16 1 40 < 1
2015 2015-03-16 1 40 1.3
[+] Expand Test Data
strontium 0.3 1500 182.0999 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.3 1500 284.392
2015 2015-09-21 0.3 1500 219.264
2015 2015-09-21 0.3 1500 153.914
2015 2015-09-21 0.3 1500 166.331
2015 2015-09-21 0.3 1500 286.72
2015 2015-09-21 0.3 1500 133.578
2015 2015-05-06 0.3 1500 81
2015 2015-03-17 0.3 1500 110
2015 2015-03-16 0.3 1500 210
2015 2015-03-16 0.3 1500 150
2015 2015-03-16 0.3 1500 260
2015 2015-03-16 0.3 1500 130
[+] Expand Test Data
vanadium 0.2 21 4.6702 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.2 21 7.205
2015 2015-09-21 0.2 21 4.686
2015 2015-09-21 0.2 21 6.697
2015 2015-09-21 0.2 21 3.832
2015 2015-09-21 0.2 21 3.938
2015 2015-09-21 0.2 21 4.984
2015 2015-05-06 0.2 21 1.8
2015 2015-03-17 0.2 21 6
2015 2015-03-16 0.2 21 4.7
2015 2015-03-16 0.2 21 3.6
2015 2015-03-16 0.2 21 3.8
2015 2015-03-16 0.2 21 4.8
[+] Expand Test Data
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.03 6.14 < 0.03
2015 2015-09-21 0.03 6.14 < 0.03
2015 2015-09-21 0.03 6.14 < 0.03
2015 2015-09-21 0.03 6.14 < 0.03
2015 2015-09-21 0.03 6.14 < 0.03
2015 2015-05-06 0.03 6.14 < 0.03
2015 2015-03-17 0.03 6.14 < 0.03
2015 2015-03-16 0.03 6.14 < 0.03
2015 2015-03-16 0.03 6.14 < 0.03
2015 2015-03-16 0.03 6.14 < 0.03
[+] Expand Test Data
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.03 0.0004 < 0.03
2015 2015-09-21 0.03 0.0004 < 0.03
2015 2015-09-21 0.03 0.0004 < 0.03
2015 2015-09-21 0.03 0.0004 < 0.03
2015 2015-09-21 0.03 0.0004 < 0.03
2015 2015-05-06 0.03 0.0004 < 0.03
2015 2015-03-17 0.03 0.0004 < 0.03
2015 2015-03-16 0.03 0.0004 < 0.03
2015 2015-03-16 0.03 0.0004 < 0.03
2015 2015-03-16 0.03 0.0004 < 0.03
[+] Expand Test Data
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.1 0.0103 < 0.1
2015 2015-09-21 0.1 0.0103 < 0.1
2015 2015-09-21 0.1 0.0103 < 0.1
2015 2015-09-21 0.1 0.0103 < 0.1
2015 2015-09-21 0.1 0.0103 < 0.1
2015 2015-05-06 0.1 0.0103 < 0.1
2015 2015-03-17 0.1 0.0103 < 0.1
2015 2015-03-16 0.1 0.0103 < 0.1
2015 2015-03-16 0.1 0.0103 < 0.1
2015 2015-03-16 0.1 0.0103 < 0.1
[+] Expand Test Data
1,4-dioxane 0.07 0.35 0.0216 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.07 0.35 < 0.07
2015 2015-09-21 0.07 0.35 < 0.07
2015 2015-09-21 0.07 0.35 0.09597
2015 2015-09-21 0.07 0.35 < 0.07
2015 2015-09-21 0.07 0.35 < 0.07
2015 2015-05-06 0.07 0.35 < 0.07
2015 2015-03-17 0.07 0.35 < 0.07
2015 2015-03-16 0.07 0.35 0.12
2015 2015-03-16 0.07 0.35 < 0.07
2015 2015-03-16 0.07 0.35 < 0.07
[+] Expand Test Data
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.2 140 < 0.2
2015 2015-09-21 0.2 140 < 0.2
2015 2015-09-21 0.2 140 < 0.2
2015 2015-09-21 0.2 140 < 0.2
2015 2015-09-21 0.2 140 < 0.2
2015 2015-05-06 0.2 140 < 0.2
2015 2015-03-17 0.2 140 < 0.2
2015 2015-03-16 0.2 140 < 0.2
2015 2015-03-16 0.2 140 < 0.2
2015 2015-03-16 0.2 140 < 0.2
[+] Expand Test Data
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.2 2.69 < 0.2
2015 2015-09-21 0.2 2.69 < 0.2
2015 2015-09-21 0.2 2.69 < 0.2
2015 2015-09-21 0.2 2.69 < 0.2
2015 2015-09-21 0.2 2.69 < 0.2
2015 2015-05-06 0.2 2.69 < 0.2
2015 2015-03-17 0.2 2.69 < 0.2
2015 2015-03-16 0.2 2.69 < 0.2
2015 2015-03-16 0.2 2.69 < 0.2
2015 2015-03-16 0.2 2.69 < 0.2
[+] Expand Test Data
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.06 90 < 0.06
2015 2015-09-21 0.06 90 < 0.06
2015 2015-09-21 0.06 90 < 0.06
2015 2015-09-21 0.06 90 < 0.06
2015 2015-09-21 0.06 90 < 0.06
2015 2015-05-06 0.06 90 < 0.06
2015 2015-03-17 0.06 90 < 0.06
2015 2015-03-16 0.06 90 < 0.06
2015 2015-03-16 0.06 90 < 0.06
2015 2015-03-16 0.06 90 < 0.06
[+] Expand Test Data
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.08 0 < 0.08
2015 2015-09-21 0.08 0 < 0.08
2015 2015-09-21 0.08 0 < 0.08
2015 2015-09-21 0.08 0 < 0.08
2015 2015-09-21 0.08 0 < 0.08
2015 2015-05-06 0.08 0 < 0.08
2015 2015-03-17 0.08 0 < 0.08
2015 2015-03-16 0.08 0 < 0.08
2015 2015-03-16 0.08 0 < 0.08
2015 2015-03-16 0.08 0 < 0.08
[+] Expand Test Data
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.09 0 < 0.09
2015 2015-09-21 0.09 0 < 0.09
2015 2015-09-21 0.09 0 < 0.09
2015 2015-09-21 0.09 0 < 0.09
2015 2015-09-21 0.09 0 < 0.09
2015 2015-05-06 0.09 0 < 0.09
2015 2015-03-17 0.09 0 < 0.09
2015 2015-03-16 0.09 0 < 0.09
2015 2015-03-16 0.09 0 < 0.09
2015 2015-03-16 0.09 0 < 0.09
[+] Expand Test Data
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.01 0 < 0.01
2015 2015-09-21 0.01 0 < 0.01
2015 2015-09-21 0.01 0 < 0.01
2015 2015-09-21 0.01 0 < 0.01
2015 2015-09-21 0.01 0 < 0.01
2015 2015-05-06 0.01 0 < 0.01
2015 2015-03-17 0.01 0 < 0.01
2015 2015-03-16 0.01 0 < 0.01
2015 2015-03-16 0.01 0 < 0.01
2015 2015-03-16 0.01 0 < 0.01
[+] Expand Test Data
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.03 0 < 0.03
2015 2015-09-21 0.03 0 < 0.03
2015 2015-09-21 0.03 0 < 0.03
2015 2015-09-21 0.03 0 < 0.03
2015 2015-09-21 0.03 0 < 0.03
2015 2015-05-06 0.03 0 < 0.03
2015 2015-03-17 0.03 0 < 0.03
2015 2015-03-16 0.03 0 < 0.03
2015 2015-03-16 0.03 0 < 0.03
2015 2015-03-16 0.03 0 < 0.03
[+] Expand Test Data
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.02 0 < 0.02
2015 2015-09-21 0.02 0 < 0.02
2015 2015-09-21 0.02 0 < 0.02
2015 2015-09-21 0.02 0 < 0.02
2015 2015-09-21 0.02 0 < 0.02
2015 2015-05-06 0.02 0 < 0.02
2015 2015-03-17 0.02 0 < 0.02
2015 2015-03-16 0.02 0 < 0.02
2015 2015-03-16 0.02 0 < 0.02
2015 2015-03-16 0.02 0 < 0.02
[+] Expand Test Data
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.02 0.07 < 0.02
2015 2015-09-21 0.02 0.07 < 0.02
2015 2015-09-21 0.02 0.07 < 0.02
2015 2015-09-21 0.02 0.07 < 0.02
2015 2015-09-21 0.02 0.07 < 0.02
2015 2015-05-06 0.02 0.07 < 0.02
2015 2015-03-17 0.02 0.07 < 0.02
2015 2015-03-16 0.02 0.07 < 0.02
2015 2015-03-16 0.02 0.07 < 0.02
2015 2015-03-16 0.02 0.07 < 0.02
[+] Expand Test Data
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.04 0.07 < 0.04
2015 2015-09-21 0.04 0.07 < 0.04
2015 2015-09-21 0.04 0.07 < 0.04
2015 2015-09-21 0.04 0.07 < 0.04
2015 2015-09-21 0.04 0.07 < 0.04
2015 2015-05-06 0.04 0.07 < 0.04
2015 2015-03-17 0.04 0.07 < 0.04
2015 2015-03-16 0.04 0.07 < 0.04
2015 2015-03-16 0.04 0.07 < 0.04
2015 2015-03-16 0.04 0.07 < 0.04
[+] Expand Test Data
sec-butylbenzene 0.04 0 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-11-02 0.04 0 < 0.04
2015 2015-09-21 0.04 0 < 0.04
2015 2015-09-21 0.04 0 < 0.04
2015 2015-09-21 0.04 0 < 0.04
2015 2015-09-21 0.04 0 < 0.04
2015 2015-05-06 0.04 0 < 0.04
2015 2015-03-17 0.04 0 < 0.04
2015 2015-03-16 0.04 0 < 0.04
2015 2015-03-16 0.04 0 < 0.04
2015 2015-03-16 0.04 0 < 0.04
[+] Expand Test Data

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 level. Lead and copper can be — and often are — deposited in drinking water in between the water facility and your tap.

Sample ID Contaminant Sampling Start Date Sampling End Date Result
CA37533 lead 2011-01-01 2013-12-31 0mg/L
401001610245L lead 2010-01-01 2010-12-31 0.005mg/L

Violations

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

Compliance Dates Rule Violation Type Contaminant Name Status
- 2000-04-04 Lead and Copper Rule Initial Tap Sampling for Pb and Cu Lead and Copper Rule Returned to Compliance

Local Water Testing

Find a lab in your area so you can get your tap or well water tested. This list contains both governmental and private labs, all of which are EPA-certified for drinking water testing.

Lab Location Zip Code
Environmental Analytical Service San Luis Obispo, CA 93401
Oilfield Environmental & Compliance Inc. Santa Maria, CA 93454
Clinical Laboratory of San Bernardino II – Lompoc Lompoc, CA 93436

Water Bill Information

Convenient information about your water service.

Unable to identify any billing information about Los Osos Community Services District (CA4010016).

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.