King County Water District No 90 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: WA5341150
Type: Community water system
EPA Region: 10
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 19,600
Contact Information
KING COUNTY WATER DISTRICT NO 90
Darcey Peterson
15606 SE 128th St
Renton, WA 98059

This public water system services 1 municipality in 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   (0) 2016   (0) 2017   (0) 2018   (2)
anatoxin-a
cylindrospermopsin

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).

anatoxin-a

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-08-06 0.03 0.00 < 0.03
2018 2018-07-16 0.03 0.00 < 0.03
2018 2018-07-02 0.03 0.00 < 0.03

cylindrospermopsin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-08-06 0.09 0.00 < 0.09
2018 2018-07-16 0.09 0.00 < 0.09
2018 2018-07-02 0.09 0.00 < 0.09

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
chlorate 20 210 44.9167 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 20 210 100
2015 2015-04-16 20 210 < 20
2015 2015-02-26 20 210 93
2015 2015-02-26 20 210 91
2015 2015-02-26 20 210 29
2015 2015-02-26 20 210 < 20
2014 2014-10-28 20 210 91
2014 2014-10-28 20 210 < 20
2014 2014-07-29 20 210 52
2014 2014-07-29 20 210 83
2014 2014-07-29 20 210 < 20
2014 2014-07-29 20 210 < 20
chromium 0.2 100 0.0817 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.2 100 < 0.2
2015 2015-04-16 0.2 100 0.21
2015 2015-02-26 0.2 100 < 0.2
2015 2015-02-26 0.2 100 < 0.2
2015 2015-02-26 0.2 100 < 0.2
2015 2015-02-26 0.2 100 < 0.2
2014 2014-10-28 0.2 100 < 0.2
2014 2014-10-28 0.2 100 0.25
2014 2014-07-29 0.2 100 0.25
2014 2014-07-29 0.2 100 < 0.2
2014 2014-07-29 0.2 100 0.27
2014 2014-07-29 0.2 100 < 0.2
chromium-6 0.03 0 0.0873 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.03 0 0.073
2015 2015-04-16 0.03 0 0.13
2015 2015-02-26 0.03 0 0.039
2015 2015-02-26 0.03 0 0.073
2015 2015-02-26 0.03 0 0.096
2015 2015-02-26 0.03 0 < 0.03
2014 2014-10-28 0.03 0 0.11
2014 2014-10-28 0.03 0 0.15
2014 2014-07-29 0.03 0 0.12
2014 2014-07-29 0.03 0 0.096
2014 2014-07-29 0.03 0 0.16
2014 2014-07-29 0.03 0 < 0.03
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 1 70 < 1
2015 2015-04-16 1 70 < 1
2015 2015-02-26 1 70 < 1
2015 2015-02-26 1 70 < 1
2015 2015-02-26 1 70 < 1
2015 2015-02-26 1 70 < 1
2014 2014-10-28 1 70 < 1
2014 2014-10-28 1 70 < 1
2014 2014-07-29 1 70 < 1
2014 2014-07-29 1 70 < 1
2014 2014-07-29 1 70 < 1
2014 2014-07-29 1 70 < 1
molybdenum 1 40 0.0833 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 1 40 < 1
2015 2015-04-16 1 40 < 1
2015 2015-02-26 1 40 < 1
2015 2015-02-26 1 40 < 1
2015 2015-02-26 1 40 < 1
2015 2015-02-26 1 40 < 1
2014 2014-10-28 1 40 < 1
2014 2014-10-28 1 40 < 1
2014 2014-07-29 1 40 < 1
2014 2014-07-29 1 40 < 1
2014 2014-07-29 1 40 < 1
2014 2014-07-29 1 40 1
strontium 0.3 1500 43 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.3 1500 45
2015 2015-04-16 0.3 1500 28
2015 2015-02-26 0.3 1500 54
2015 2015-02-26 0.3 1500 54
2015 2015-02-26 0.3 1500 27
2015 2015-02-26 0.3 1500 57
2014 2014-10-28 0.3 1500 49
2014 2014-10-28 0.3 1500 32
2014 2014-07-29 0.3 1500 38
2014 2014-07-29 0.3 1500 41
2014 2014-07-29 0.3 1500 29
2014 2014-07-29 0.3 1500 62
vanadium 0.2 21 0.425 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.2 21 0.3
2015 2015-04-16 0.2 21 0.71
2015 2015-02-26 0.2 21 0.24
2015 2015-02-26 0.2 21 0.24
2015 2015-02-26 0.2 21 0.86
2015 2015-02-26 0.2 21 < 0.2
2014 2014-10-28 0.2 21 0.45
2014 2014-10-28 0.2 21 0.84
2014 2014-07-29 0.2 21 0.47
2014 2014-07-29 0.2 21 0.35
2014 2014-07-29 0.2 21 0.64
2014 2014-07-29 0.2 21 < 0.2
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.03 6.14 < 0.03
2015 2015-02-26 0.03 6.14 < 0.03
2015 2015-02-26 0.03 6.14 < 0.03
2014 2014-10-28 0.03 6.14 < 0.03
2014 2014-07-29 0.03 6.14 < 0.03
2014 2014-07-29 0.03 6.14 < 0.03
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.03 0.0004 < 0.03
2015 2015-02-26 0.03 0.0004 < 0.03
2015 2015-02-26 0.03 0.0004 < 0.03
2014 2014-10-28 0.03 0.0004 < 0.03
2014 2014-07-29 0.03 0.0004 < 0.03
2014 2014-07-29 0.03 0.0004 < 0.03
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.1 0.0103 < 0.1
2015 2015-02-26 0.1 0.0103 < 0.1
2015 2015-02-26 0.1 0.0103 < 0.1
2014 2014-10-28 0.1 0.0103 < 0.1
2014 2014-07-29 0.1 0.0103 < 0.1
2014 2014-07-29 0.1 0.0103 < 0.1
1,4-dioxane 0.07 0.35 0.0128 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.07 0.35 < 0.07
2015 2015-02-26 0.07 0.35 0.077
2015 2015-02-26 0.07 0.35 < 0.07
2014 2014-10-28 0.07 0.35 < 0.07
2014 2014-07-29 0.07 0.35 < 0.07
2014 2014-07-29 0.07 0.35 < 0.07
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.2 140 < 0.2
2015 2015-02-26 0.2 140 < 0.2
2015 2015-02-26 0.2 140 < 0.2
2014 2014-10-28 0.2 140 < 0.2
2014 2014-07-29 0.2 140 < 0.2
2014 2014-07-29 0.2 140 < 0.2
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.2 2.69 < 0.2
2015 2015-02-26 0.2 2.69 < 0.2
2015 2015-02-26 0.2 2.69 < 0.2
2014 2014-10-28 0.2 2.69 < 0.2
2014 2014-07-29 0.2 2.69 < 0.2
2014 2014-07-29 0.2 2.69 < 0.2
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.06 90 < 0.06
2015 2015-02-26 0.06 90 < 0.06
2015 2015-02-26 0.06 90 < 0.06
2014 2014-10-28 0.06 90 < 0.06
2014 2014-07-29 0.06 90 < 0.06
2014 2014-07-29 0.06 90 < 0.06
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.08 0 < 0.08
2015 2015-02-26 0.08 0 < 0.08
2015 2015-02-26 0.08 0 < 0.08
2014 2014-10-28 0.08 0 < 0.08
2014 2014-07-29 0.08 0 < 0.08
2014 2014-07-29 0.08 0 < 0.08
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.09 0 < 0.09
2015 2015-02-26 0.09 0 < 0.09
2015 2015-02-26 0.09 0 < 0.09
2014 2014-10-28 0.09 0 < 0.09
2014 2014-07-29 0.09 0 < 0.09
2014 2014-07-29 0.09 0 < 0.09
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.01 0 < 0.01
2015 2015-02-26 0.01 0 < 0.01
2015 2015-02-26 0.01 0 < 0.01
2014 2014-10-28 0.01 0 < 0.01
2014 2014-07-29 0.01 0 < 0.01
2014 2014-07-29 0.01 0 < 0.01
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.03 0 < 0.03
2015 2015-02-26 0.03 0 < 0.03
2015 2015-02-26 0.03 0 < 0.03
2014 2014-10-28 0.03 0 < 0.03
2014 2014-07-29 0.03 0 < 0.03
2014 2014-07-29 0.03 0 < 0.03
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.02 0 < 0.02
2015 2015-02-26 0.02 0 < 0.02
2015 2015-02-26 0.02 0 < 0.02
2014 2014-10-28 0.02 0 < 0.02
2014 2014-07-29 0.02 0 < 0.02
2014 2014-07-29 0.02 0 < 0.02
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.02 0.07 < 0.02
2015 2015-02-26 0.02 0.07 < 0.02
2015 2015-02-26 0.02 0.07 < 0.02
2014 2014-10-28 0.02 0.07 < 0.02
2014 2014-07-29 0.02 0.07 < 0.02
2014 2014-07-29 0.02 0.07 < 0.02
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-04-16 0.04 0.07 < 0.04
2015 2015-02-26 0.04 0.07 < 0.04
2015 2015-02-26 0.04 0.07 < 0.04
2014 2014-10-28 0.04 0.07 < 0.04
2014 2014-07-29 0.04 0.07 < 0.04
2014 2014-07-29 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 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
3352239 lead 2014-01-01 2016-12-31 0.002mg/L
7752350 lead 2014-01-01 2016-12-31 0.002mg/L
2836475 lead 2011-01-01 2013-12-31 0.0015mg/L
6412843 lead 2011-01-01 2013-12-31 0.0015mg/L
4761395 lead 2008-01-01 2010-12-31 0.0022mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2007-01-01 - 2007-12-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular Toluene Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular o-Dichlorobenzene Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular p-Dichlorobenzene Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular Ethylbenzene Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular Styrene Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular DICHLOROMETHANE Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular cis-1,2-Dichloroethylene Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular Tetrachloroethylene Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular CHLOROBENZENE Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular Carbon tetrachloride Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular Benzene Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular 1,2,4-Trichlorobenzene Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular trans-1,2-Dichloroethylene Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloropropane Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloroethane Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular Trichloroethylene Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular 1,1,2-Trichloroethane Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular 1,1,1-Trichloroethane Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular Vinyl chloride Returned to Compliance
2005-04-01 - 2005-06-30 Volatile Organic Chemicals Monitoring, Regular 1,1-Dichloroethylene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular trans-1,2-Dichloroethylene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular Ethylbenzene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular Toluene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular Trichloroethylene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular Tetrachloroethylene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular Vinyl chloride Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular Styrene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular o-Dichlorobenzene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular 1,1,1-Trichloroethane Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular 1,1,2-Trichloroethane Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloroethane Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloropropane Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular 1,2,4-Trichlorobenzene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular Benzene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular Carbon tetrachloride Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular CHLOROBENZENE Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular cis-1,2-Dichloroethylene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular DICHLOROMETHANE Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular 1,1-Dichloroethylene Returned to Compliance
2005-01-01 - 2005-03-31 Volatile Organic Chemicals Monitoring, Regular p-Dichlorobenzene Returned to Compliance
2003-01-01 - 2003-12-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence 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
Brooks Applied Labs, LLC Bothell, WA 98011
Lab/Cor, Inc. Seattle, WA 98117
LABCOR INC SEATTLE, WA 98117

Water Bill Information


Convenient information about your water service.

Unable to identify any billing information about King County Water District No 90 (WA5341150).

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.