Public Water System: Castle Rock Town Of

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: CO0118010
Type: Community water system
EPA Region: 08
Primary Service Area: Residential Area
Primary Source: Surface water
Population Served: 59,362
Contact Information
GRIFFITH, SHAWN
GRIFFITH, SHAWN
175 KELLOGG CT
CASTLE ROCK, CO 80109

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   (1) 2015   (1)
chlorate 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 2015-08-18 20 210 340
2015 2015-08-18 20 210 290
2015 2015-08-18 20 210 270
2015 2015-08-18 20 210 280
2015 2015-05-19 20 210 270
2015 2015-05-19 20 210 260
2015 2015-02-11 20 210 200
2015 2015-02-11 20 210 230
2015 2015-02-11 20 210 270
2015 2015-02-11 20 210 190
2014 2014-11-19 20 210 320
2014 2014-11-19 20 210 220
2014 2014-09-02 20 210 660
2014 2014-09-02 20 210 430
2014 2014-08-14 20 210 440
2014 2014-08-14 20 210 380
2014 2014-08-14 20 210 440
2014 2014-08-14 20 210 580
2014 2014-08-13 20 210 610
2014 2014-08-13 20 210 420

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
strontium 0.3 1500 426.5 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.3 1500 400
2015 2015-08-18 0.3 1500 490
2015 2015-08-18 0.3 1500 360
2015 2015-08-18 0.3 1500 480
2015 2015-05-19 0.3 1500 400
2015 2015-05-19 0.3 1500 420
2015 2015-02-11 0.3 1500 470
2015 2015-02-11 0.3 1500 460
2015 2015-02-11 0.3 1500 440
2015 2015-02-11 0.3 1500 390
2014 2014-12-16 0.3 1500 460
2014 2014-12-16 0.3 1500 420
2014 2014-09-02 0.3 1500 400
2014 2014-09-02 0.3 1500 420
2014 2014-08-14 0.3 1500 390
2014 2014-08-14 0.3 1500 500
2014 2014-08-14 0.3 1500 480
2014 2014-08-14 0.3 1500 360
2014 2014-08-13 0.3 1500 400
2014 2014-08-13 0.3 1500 390
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.1 0.0103 < 0.1
2015 2015-08-18 0.1 0.0103 < 0.1
2015 2015-05-19 0.1 0.0103 < 0.1
2015 2015-02-11 0.1 0.0103 < 0.1
2015 2015-02-11 0.1 0.0103 < 0.1
2014 2014-11-19 0.1 0.0103 < 0.1
2014 2014-08-14 0.1 0.0103 < 0.1
2014 2014-08-14 0.1 0.0103 < 0.1
2014 2014-08-13 0.1 0.0103 < 0.1
2014 2014-08-13 0.1 0.0103 < 0.1
1,1-dichloroethane 0.03 6.14 0.0039 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.03 6.14 < 0.03
2015 2015-08-18 0.03 6.14 < 0.03
2015 2015-05-19 0.03 6.14 < 0.03
2015 2015-02-11 0.03 6.14 < 0.03
2015 2015-02-11 0.03 6.14 < 0.03
2014 2014-11-19 0.03 6.14 < 0.03
2014 2014-08-14 0.03 6.14 < 0.03
2014 2014-08-14 0.03 6.14 < 0.03
2014 2014-08-13 0.03 6.14 < 0.03
2014 2014-08-13 0.03 6.14 0.039
chromium-6 0.03 0 0.2539 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.03 0 0.03
2015 2015-08-18 0.03 0 0.15
2015 2015-08-18 0.03 0 < 0.03
2015 2015-08-18 0.03 0 0.05
2015 2015-05-19 0.03 0 0.92
2015 2015-05-19 0.03 0 0.3
2015 2015-02-11 0.03 0 0.52
2015 2015-02-11 0.03 0 0.4
2015 2015-02-11 0.03 0 0.16
2015 2015-02-11 0.03 0 0.037
2014 2014-11-19 0.03 0 0.16
2014 2014-11-19 0.03 0 0.58
2014 2014-09-02 0.03 0 0.76
2014 2014-09-02 0.03 0 0.28
2014 2014-08-14 0.03 0 0.1
2014 2014-08-14 0.03 0 0.031
2014 2014-08-14 0.03 0 < 0.03
2014 2014-08-14 0.03 0 < 0.03
2014 2014-08-13 0.03 0 0.6
2014 2014-08-13 0.03 0 < 0.03
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.09 0 < 0.09
2015 2015-08-18 0.09 0 < 0.09
2015 2015-05-19 0.09 0 < 0.09
2015 2015-02-11 0.09 0 < 0.09
2015 2015-02-11 0.09 0 < 0.09
2014 2014-11-19 0.09 0 < 0.09
2014 2014-08-14 0.09 0 < 0.09
2014 2014-08-14 0.09 0 < 0.09
2014 2014-08-13 0.09 0 < 0.09
2014 2014-08-13 0.09 0 < 0.09
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 1 70 < 1
2015 2015-08-18 1 70 < 1
2015 2015-08-18 1 70 < 1
2015 2015-08-18 1 70 < 1
2015 2015-05-19 1 70 < 1
2015 2015-05-19 1 70 < 1
2015 2015-02-11 1 70 < 1
2015 2015-02-11 1 70 < 1
2015 2015-02-11 1 70 < 1
2015 2015-02-11 1 70 < 1
2014 2014-12-16 1 70 < 1
2014 2014-12-16 1 70 < 1
2014 2014-09-02 1 70 < 1
2014 2014-09-02 1 70 < 1
2014 2014-08-14 1 70 < 1
2014 2014-08-14 1 70 < 1
2014 2014-08-14 1 70 < 1
2014 2014-08-14 1 70 < 1
2014 2014-08-13 1 70 < 1
2014 2014-08-13 1 70 < 1
chromium 0.2 100 0.3765 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.2 100 0.35
2015 2015-08-18 0.2 100 0.25
2015 2015-08-18 0.2 100 < 0.2
2015 2015-08-18 0.2 100 0.21
2015 2015-05-19 0.2 100 1
2015 2015-05-19 0.2 100 0.34
2015 2015-02-11 0.2 100 0.57
2015 2015-02-11 0.2 100 0.68
2015 2015-02-11 0.2 100 0.26
2015 2015-02-11 0.2 100 < 0.2
2014 2014-12-16 0.2 100 1
2014 2014-12-16 0.2 100 0.33
2014 2014-09-02 0.2 100 0.99
2014 2014-09-02 0.2 100 0.46
2014 2014-08-14 0.2 100 < 0.2
2014 2014-08-14 0.2 100 0.28
2014 2014-08-14 0.2 100 < 0.2
2014 2014-08-14 0.2 100 < 0.2
2014 2014-08-13 0.2 100 0.81
2014 2014-08-13 0.2 100 < 0.2
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.07 0.35 < 0.07
2015 2015-08-18 0.07 0.35 < 0.07
2015 2015-05-19 0.07 0.35 < 0.07
2015 2015-02-11 0.07 0.35 < 0.07
2015 2015-02-11 0.07 0.35 < 0.07
2014 2014-11-19 0.07 0.35 < 0.07
2014 2014-08-14 0.07 0.35 < 0.07
2014 2014-08-14 0.07 0.35 < 0.07
2014 2014-08-13 0.07 0.35 < 0.07
2014 2014-08-13 0.07 0.35 < 0.07
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.06 90 < 0.06
2015 2015-08-18 0.06 90 < 0.06
2015 2015-05-19 0.06 90 < 0.06
2015 2015-02-11 0.06 90 < 0.06
2015 2015-02-11 0.06 90 < 0.06
2014 2014-11-19 0.06 90 < 0.06
2014 2014-08-14 0.06 90 < 0.06
2014 2014-08-14 0.06 90 < 0.06
2014 2014-08-13 0.06 90 < 0.06
2014 2014-08-13 0.06 90 < 0.06
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.03 0.0004 < 0.03
2015 2015-08-18 0.03 0.0004 < 0.03
2015 2015-05-19 0.03 0.0004 < 0.03
2015 2015-02-11 0.03 0.0004 < 0.03
2015 2015-02-11 0.03 0.0004 < 0.03
2014 2014-11-19 0.03 0.0004 < 0.03
2014 2014-08-14 0.03 0.0004 < 0.03
2014 2014-08-14 0.03 0.0004 < 0.03
2014 2014-08-13 0.03 0.0004 < 0.03
2014 2014-08-13 0.03 0.0004 < 0.03
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.2 140 < 0.2
2015 2015-08-18 0.2 140 < 0.2
2015 2015-05-19 0.2 140 < 0.2
2015 2015-02-11 0.2 140 < 0.2
2015 2015-02-11 0.2 140 < 0.2
2014 2014-11-19 0.2 140 < 0.2
2014 2014-08-14 0.2 140 < 0.2
2014 2014-08-14 0.2 140 < 0.2
2014 2014-08-13 0.2 140 < 0.2
2014 2014-08-13 0.2 140 < 0.2
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.2 2.69 < 0.2
2015 2015-08-18 0.2 2.69 < 0.2
2015 2015-05-19 0.2 2.69 < 0.2
2015 2015-02-11 0.2 2.69 < 0.2
2015 2015-02-11 0.2 2.69 < 0.2
2014 2014-11-19 0.2 2.69 < 0.2
2014 2014-08-14 0.2 2.69 < 0.2
2014 2014-08-14 0.2 2.69 < 0.2
2014 2014-08-13 0.2 2.69 < 0.2
2014 2014-08-13 0.2 2.69 < 0.2
vanadium 0.2 21 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.2 21 < 0.2
2015 2015-08-18 0.2 21 < 0.2
2015 2015-08-18 0.2 21 < 0.2
2015 2015-08-18 0.2 21 < 0.2
2015 2015-05-19 0.2 21 < 0.2
2015 2015-05-19 0.2 21 < 0.2
2015 2015-02-11 0.2 21 < 0.2
2015 2015-02-11 0.2 21 < 0.2
2015 2015-02-11 0.2 21 < 0.2
2015 2015-02-11 0.2 21 < 0.2
2014 2014-12-16 0.2 21 < 0.2
2014 2014-12-16 0.2 21 < 0.2
2014 2014-09-02 0.2 21 < 0.2
2014 2014-09-02 0.2 21 < 0.2
2014 2014-08-14 0.2 21 < 0.2
2014 2014-08-14 0.2 21 < 0.2
2014 2014-08-14 0.2 21 < 0.2
2014 2014-08-14 0.2 21 < 0.2
2014 2014-08-13 0.2 21 < 0.2
2014 2014-08-13 0.2 21 < 0.2
molybdenum 1 40 0.305 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 1 40 < 1
2015 2015-08-18 1 40 1
2015 2015-08-18 1 40 < 1
2015 2015-08-18 1 40 1
2015 2015-05-19 1 40 1
2015 2015-05-19 1 40 < 1
2015 2015-02-11 1 40 1
2015 2015-02-11 1 40 1
2015 2015-02-11 1 40 < 1
2015 2015-02-11 1 40 < 1
2014 2014-12-16 1 40 < 1
2014 2014-12-16 1 40 < 1
2014 2014-09-02 1 40 < 1
2014 2014-09-02 1 40 < 1
2014 2014-08-14 1 40 < 1
2014 2014-08-14 1 40 < 1
2014 2014-08-14 1 40 < 1
2014 2014-08-14 1 40 1.1
2014 2014-08-13 1 40 < 1
2014 2014-08-13 1 40 < 1
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.08 0 < 0.08
2015 2015-08-18 0.08 0 < 0.08
2015 2015-05-19 0.08 0 < 0.08
2015 2015-02-11 0.08 0 < 0.08
2015 2015-02-11 0.08 0 < 0.08
2014 2014-11-19 0.08 0 < 0.08
2014 2014-08-14 0.08 0 < 0.08
2014 2014-08-14 0.08 0 < 0.08
2014 2014-08-13 0.08 0 < 0.08
2014 2014-08-13 0.08 0 < 0.08
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.02 0.07 < 0.02
2015 2015-08-18 0.02 0.07 < 0.02
2015 2015-05-19 0.02 0.07 < 0.02
2015 2015-02-11 0.02 0.07 < 0.02
2015 2015-02-11 0.02 0.07 < 0.02
2014 2014-11-19 0.02 0.07 < 0.02
2014 2014-08-14 0.02 0.07 < 0.02
2014 2014-08-14 0.02 0.07 < 0.02
2014 2014-08-13 0.02 0.07 < 0.02
2014 2014-08-13 0.02 0.07 < 0.02
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.01 0 < 0.01
2015 2015-08-18 0.01 0 < 0.01
2015 2015-05-19 0.01 0 < 0.01
2015 2015-02-11 0.01 0 < 0.01
2015 2015-02-11 0.01 0 < 0.01
2014 2014-11-19 0.01 0 < 0.01
2014 2014-08-14 0.01 0 < 0.01
2014 2014-08-14 0.01 0 < 0.01
2014 2014-08-13 0.01 0 < 0.01
2014 2014-08-13 0.01 0 < 0.01
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.03 0 < 0.03
2015 2015-08-18 0.03 0 < 0.03
2015 2015-05-19 0.03 0 < 0.03
2015 2015-02-11 0.03 0 < 0.03
2015 2015-02-11 0.03 0 < 0.03
2014 2014-11-19 0.03 0 < 0.03
2014 2014-08-14 0.03 0 < 0.03
2014 2014-08-14 0.03 0 < 0.03
2014 2014-08-13 0.03 0 < 0.03
2014 2014-08-13 0.03 0 < 0.03
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.02 0 < 0.02
2015 2015-08-18 0.02 0 < 0.02
2015 2015-05-19 0.02 0 < 0.02
2015 2015-02-11 0.02 0 < 0.02
2015 2015-02-11 0.02 0 < 0.02
2014 2014-11-19 0.02 0 < 0.02
2014 2014-08-14 0.02 0 < 0.02
2014 2014-08-14 0.02 0 < 0.02
2014 2014-08-13 0.02 0 < 0.02
2014 2014-08-13 0.02 0 < 0.02
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-18 0.04 0.07 < 0.04
2015 2015-08-18 0.04 0.07 < 0.04
2015 2015-05-19 0.04 0.07 < 0.04
2015 2015-02-11 0.04 0.07 < 0.04
2015 2015-02-11 0.04 0.07 < 0.04
2014 2014-11-19 0.04 0.07 < 0.04
2014 2014-08-14 0.04 0.07 < 0.04
2014 2014-08-14 0.04 0.07 < 0.04
2014 2014-08-13 0.04 0.07 < 0.04
2014 2014-08-13 0.04 0.07 < 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
CO36585 lead 2017-07-01 2017-12-31 0.0025mg/L
CO34814 lead 2017-01-01 2017-06-30 0.0022mg/L
CO34730 lead 2016-07-01 2016-12-31 0.0027mg/L
CO33242 lead 2015-01-01 2015-12-31 0.0026mg/L
CO32358 lead 2014-07-01 2014-12-31 0.0023mg/L
CO31259 lead 2014-01-01 2014-06-30 0.0033mg/L
CO31021 lead 2013-07-01 2013-12-31 0.0027mg/L
CO28430 lead 2011-01-01 2013-12-31 0.003mg/L
CO24274 lead 2008-01-01 2010-12-31 0.002mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2013-10-01 - 2013-10-31 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) Surface Water Treatment Rule Returned to Compliance
2013-09-01 - 2013-09-30 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) Surface Water Treatment Rule Returned to Compliance
2008-04-01 - 2008-06-30 Nitrates Monitoring, Regular Nitrite Returned to Compliance
2006-01-01 - 2006-12-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2006-08-01 - 2006-08-31 Total Coliform Rule Monitoring, Routine Minor (TCR) Coliform (TCR) Returned to Compliance
1999-06-01 - 1999-06-30 Total Coliform Rule Monitoring, Routine Minor (TCR) Coliform (TCR) Returned to Compliance
2007-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule 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.