Public Water System: City Of San Juan

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: TX1080010
Type: Community water system
EPA Region: 06
Primary Service Area: Residential Area
Primary Source: Surface water
Population Served: 30,000
Contact Information
SANCHEZ, SAN, JUANITA
SANCHEZ, SAN, JUANITA
709 S NEBRASKA AVE
SAN JUAN, TX 78589-2649

This public water system services 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   (2) 2015   (0)
chlorate
strontium

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

Year Test Date MRL HRL Test Result
2014 2014-10-21 20 210 143
2014 2014-10-21 20 210 140
2014 2014-10-21 20 210 114
2014 2014-10-21 20 210 138
2014 2014-07-23 20 210 159
2014 2014-07-23 20 210 43.8
2014 2014-07-23 20 210 70.6
2014 2014-07-23 20 210 143
2014 2014-04-22 20 210 194
2014 2014-04-22 20 210 163
2014 2014-04-22 20 210 120
2014 2014-04-22 20 210 124
2014 2014-01-29 20 210 258
2014 2014-01-29 20 210 341
2014 2014-01-29 20 210 284
2014 2014-01-29 20 210 174

strontium

Year Test Date MRL HRL Test Result
2014 2014-10-21 0.3 1500 1040
2014 2014-10-21 0.3 1500 1400
2014 2014-10-21 0.3 1500 1570
2014 2014-10-21 0.3 1500 1080
2014 2014-07-23 0.3 1500 1510
2014 2014-07-23 0.3 1500 1610
2014 2014-07-23 0.3 1500 2080
2014 2014-07-23 0.3 1500 1430
2014 2014-04-22 0.3 1500 1450
2014 2014-04-22 0.3 1500 1590
2014 2014-04-22 0.3 1500 1920
2014 2014-04-22 0.3 1500 1470
2014 2014-01-29 0.3 1500 1210
2014 2014-01-29 0.3 1500 1580
2014 2014-01-29 0.3 1500 1720
2014 2014-01-29 0.3 1500 1240

Other Water Contaminants Tested


The following contaminants were tested and within national EPA guidelines.

Contaminant MRL HRL Avg Result
chromium 0.2 100 0.0672 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.2 100 < 0.2
2014 2014-10-21 0.2 100 0.203
2014 2014-10-21 0.2 100 < 0.2
2014 2014-10-21 0.2 100 0.204
2014 2014-07-23 0.2 100 < 0.2
2014 2014-07-23 0.2 100 < 0.2
2014 2014-07-23 0.2 100 < 0.2
2014 2014-07-23 0.2 100 < 0.2
2014 2014-04-22 0.2 100 0.237
2014 2014-04-22 0.2 100 0.224
2014 2014-04-22 0.2 100 < 0.2
2014 2014-04-22 0.2 100 0.207
2014 2014-01-29 0.2 100 < 0.2
2014 2014-01-29 0.2 100 < 0.2
2014 2014-01-29 0.2 100 < 0.2
2014 2014-01-29 0.2 100 < 0.2
chromium-6 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.03 0 < 0.03
2014 2014-10-21 0.03 0 < 0.03
2014 2014-10-21 0.03 0 < 0.03
2014 2014-10-21 0.03 0 < 0.03
2014 2014-07-23 0.03 0 < 0.03
2014 2014-07-23 0.03 0 < 0.03
2014 2014-07-23 0.03 0 < 0.03
2014 2014-07-23 0.03 0 < 0.03
2014 2014-04-22 0.03 0 < 0.03
2014 2014-04-22 0.03 0 < 0.03
2014 2014-04-22 0.03 0 < 0.03
2014 2014-04-22 0.03 0 < 0.03
2014 2014-01-29 0.03 0 < 0.03
2014 2014-01-29 0.03 0 < 0.03
2014 2014-01-29 0.03 0 < 0.03
2014 2014-01-29 0.03 0 < 0.03
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 1 70 < 1
2014 2014-10-21 1 70 < 1
2014 2014-10-21 1 70 < 1
2014 2014-10-21 1 70 < 1
2014 2014-07-23 1 70 < 1
2014 2014-07-23 1 70 < 1
2014 2014-07-23 1 70 < 1
2014 2014-07-23 1 70 < 1
2014 2014-04-22 1 70 < 1
2014 2014-04-22 1 70 < 1
2014 2014-04-22 1 70 < 1
2014 2014-04-22 1 70 < 1
2014 2014-01-29 1 70 < 1
2014 2014-01-29 1 70 < 1
2014 2014-01-29 1 70 < 1
2014 2014-01-29 1 70 < 1
molybdenum 1 40 7.1475 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 1 40 5.94
2014 2014-10-21 1 40 7.85
2014 2014-10-21 1 40 9.35
2014 2014-10-21 1 40 5.82
2014 2014-07-23 1 40 6.59
2014 2014-07-23 1 40 7.39
2014 2014-07-23 1 40 10.1
2014 2014-07-23 1 40 6.64
2014 2014-04-22 1 40 5.31
2014 2014-04-22 1 40 6.68
2014 2014-04-22 1 40 9.21
2014 2014-04-22 1 40 5.29
2014 2014-01-29 1 40 5.22
2014 2014-01-29 1 40 8.25
2014 2014-01-29 1 40 9.43
2014 2014-01-29 1 40 5.29
vanadium 0.2 21 3.6306 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.2 21 3.19
2014 2014-10-21 0.2 21 4.33
2014 2014-10-21 0.2 21 4.99
2014 2014-10-21 0.2 21 3.36
2014 2014-07-23 0.2 21 3.8
2014 2014-07-23 0.2 21 4.16
2014 2014-07-23 0.2 21 4.89
2014 2014-07-23 0.2 21 3.33
2014 2014-04-22 0.2 21 2.75
2014 2014-04-22 0.2 21 5.1
2014 2014-04-22 0.2 21 4.17
2014 2014-04-22 0.2 21 2.7
2014 2014-01-29 0.2 21 2.21
2014 2014-01-29 0.2 21 3.23
2014 2014-01-29 0.2 21 3.71
2014 2014-01-29 0.2 21 2.17
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.03 6.139999866485596 < 0.03
2014 2014-10-21 0.03 6.139999866485596 < 0.03
2014 2014-07-23 0.03 6.139999866485596 < 0.03
2014 2014-07-23 0.03 6.139999866485596 < 0.03
2014 2014-04-22 0.03 6.139999866485596 < 0.03
2014 2014-04-22 0.03 6.139999866485596 < 0.03
2014 2014-01-29 0.03 6.139999866485596 < 0.03
2014 2014-01-29 0.03 6.139999866485596 < 0.03
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.03 0.00039999998989515007 < 0.03
2014 2014-10-21 0.03 0.00039999998989515007 < 0.03
2014 2014-07-23 0.03 0.00039999998989515007 < 0.03
2014 2014-07-23 0.03 0.00039999998989515007 < 0.03
2014 2014-04-22 0.03 0.00039999998989515007 < 0.03
2014 2014-04-22 0.03 0.00039999998989515007 < 0.03
2014 2014-01-29 0.03 0.00039999998989515007 < 0.03
2014 2014-01-29 0.03 0.00039999998989515007 < 0.03
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.1 0.010300000198185444 < 0.1
2014 2014-10-21 0.1 0.010300000198185444 < 0.1
2014 2014-07-23 0.1 0.010300000198185444 < 0.1
2014 2014-07-23 0.1 0.010300000198185444 < 0.1
2014 2014-04-22 0.1 0.010300000198185444 < 0.1
2014 2014-04-22 0.1 0.010300000198185444 < 0.1
2014 2014-01-29 0.1 0.010300000198185444 < 0.1
2014 2014-01-29 0.1 0.010300000198185444 < 0.1
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.07 0.3499999940395355 < 0.07
2014 2014-10-21 0.07 0.3499999940395355 < 0.07
2014 2014-07-23 0.07 0.3499999940395355 < 0.07
2014 2014-07-23 0.07 0.3499999940395355 < 0.07
2014 2014-04-22 0.07 0.3499999940395355 < 0.07
2014 2014-04-22 0.07 0.3499999940395355 < 0.07
2014 2014-01-29 0.07 0.3499999940395355 < 0.07
2014 2014-01-29 0.07 0.3499999940395355 < 0.07
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.2 140 < 0.2
2014 2014-10-21 0.2 140 < 0.2
2014 2014-07-23 0.2 140 < 0.2
2014 2014-07-23 0.2 140 < 0.2
2014 2014-04-22 0.2 140 < 0.2
2014 2014-04-22 0.2 140 < 0.2
2014 2014-01-29 0.2 140 < 0.2
2014 2014-01-29 0.2 140 < 0.2
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.2 2.690000057220459 < 0.2
2014 2014-10-21 0.2 2.690000057220459 < 0.2
2014 2014-07-23 0.2 2.690000057220459 < 0.2
2014 2014-07-23 0.2 2.690000057220459 < 0.2
2014 2014-04-22 0.2 2.690000057220459 < 0.2
2014 2014-04-22 0.2 2.690000057220459 < 0.2
2014 2014-01-29 0.2 2.690000057220459 < 0.2
2014 2014-01-29 0.2 2.690000057220459 < 0.2
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.06 90 < 0.06
2014 2014-10-21 0.06 90 < 0.06
2014 2014-07-23 0.06 90 < 0.06
2014 2014-07-23 0.06 90 < 0.06
2014 2014-04-22 0.06 90 < 0.06
2014 2014-04-22 0.06 90 < 0.06
2014 2014-01-29 0.06 90 < 0.06
2014 2014-01-29 0.06 90 < 0.06
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.08 0 < 0.08
2014 2014-10-21 0.08 0 < 0.08
2014 2014-07-23 0.08 0 < 0.08
2014 2014-07-23 0.08 0 < 0.08
2014 2014-04-22 0.08 0 < 0.08
2014 2014-04-22 0.08 0 < 0.08
2014 2014-01-29 0.08 0 < 0.08
2014 2014-01-29 0.08 0 < 0.08
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.09 0 < 0.09
2014 2014-10-21 0.09 0 < 0.09
2014 2014-07-23 0.09 0 < 0.09
2014 2014-07-23 0.09 0 < 0.09
2014 2014-04-22 0.09 0 < 0.09
2014 2014-04-22 0.09 0 < 0.09
2014 2014-01-29 0.09 0 < 0.09
2014 2014-01-29 0.09 0 < 0.09
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.01 0 < 0.01
2014 2014-10-21 0.01 0 < 0.01
2014 2014-07-23 0.01 0 < 0.01
2014 2014-07-23 0.01 0 < 0.01
2014 2014-04-22 0.01 0 < 0.01
2014 2014-04-22 0.01 0 < 0.01
2014 2014-01-29 0.01 0 < 0.01
2014 2014-01-29 0.01 0 < 0.01
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.03 0 < 0.03
2014 2014-10-21 0.03 0 < 0.03
2014 2014-07-23 0.03 0 < 0.03
2014 2014-07-23 0.03 0 < 0.03
2014 2014-04-22 0.03 0 < 0.03
2014 2014-04-22 0.03 0 < 0.03
2014 2014-01-29 0.03 0 < 0.03
2014 2014-01-29 0.03 0 < 0.03
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.02 0 < 0.02
2014 2014-10-21 0.02 0 < 0.02
2014 2014-07-23 0.02 0 < 0.02
2014 2014-07-23 0.02 0 < 0.02
2014 2014-04-22 0.02 0 < 0.02
2014 2014-04-22 0.02 0 < 0.02
2014 2014-01-29 0.02 0 < 0.02
2014 2014-01-29 0.02 0 < 0.02
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.02 0.07000000029802322 < 0.02
2014 2014-10-21 0.02 0.07000000029802322 < 0.02
2014 2014-07-23 0.02 0.07000000029802322 < 0.02
2014 2014-07-23 0.02 0.07000000029802322 < 0.02
2014 2014-04-22 0.02 0.07000000029802322 < 0.02
2014 2014-04-22 0.02 0.07000000029802322 < 0.02
2014 2014-01-29 0.02 0.07000000029802322 < 0.02
2014 2014-01-29 0.02 0.07000000029802322 < 0.02
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-21 0.04 0.07000000029802322 < 0.04
2014 2014-10-21 0.04 0.07000000029802322 < 0.04
2014 2014-07-23 0.04 0.07000000029802322 < 0.04
2014 2014-07-23 0.04 0.07000000029802322 < 0.04
2014 2014-04-22 0.04 0.07000000029802322 < 0.04
2014 2014-04-22 0.04 0.07000000029802322 < 0.04
2014 2014-01-29 0.04 0.07000000029802322 < 0.04
2014 2014-01-29 0.04 0.07000000029802322 < 0.04

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
TX105476 lead 2017-01-01 2017-12-31 0.00079mg/L
TX97050 lead 2014-01-01 2016-12-31 0mg/L
TX81909 lead 2011-01-01 2013-12-31 0mg/L
TX61887 lead 2008-01-01 2010-12-31 0.000707mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2016-07-01 - 2016-07-31 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) Surface Water Treatment Rule Known
2015-01-01 - 2015-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) CARBON, TOTAL Known
2014-08-01 - 2014-08-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorite Returned to Compliance
2012-11-01 - 2012-11-30 Total Coliform Rule Monitoring, Routine Minor (TCR) Coliform (TCR) Returned to Compliance
2002-12-01 - 2002-12-31 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) Surface Water Treatment Rule Returned to Compliance
2013-03-12 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2016-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Returned to Compliance
- N/A Total Trihalomethanes Maximum Contaminant Level Violation, Average TTHM Returned to Compliance
- N/A Total Trihalomethanes Maximum Contaminant Level Violation, Average TTHM Returned to Compliance
2017-02-03 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2013-12-30 - N/A Lead and Copper Rule Lead Consumer Notice Lead and Copper Rule Returned to Compliance
- N/A Total Trihalomethanes Maximum Contaminant Level Violation, Average TTHM Returned to Compliance
- N/A Total Trihalomethanes Maximum Contaminant Level Violation, Average TTHM Returned to Compliance

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.