Rapid Valley Sanitary 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: SD4600274
Type: Community water system
EPA Region: 08
Primary Service Area: Other Residential
Primary Source: Surface water
Population Served: 9,075 		Contact Information
RAPID VALLEY SANITARY DISTRICT
RUSTY SCHMIDT
4611 TEAK DRIVE
RAPID CITY, SD 57703
[email protected]

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   (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 2015-12-15 20 210 160
2015 2015-12-15 20 210 173.922
2015 2015-09-23 20 210 267
2015 2015-09-23 20 210 260
2015 2015-06-15 20 210 205.527
2015 2015-06-15 20 210 210.485
2015 2015-03-18 20 210 121
2015 2015-03-18 20 210 103

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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 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-12-15 0.2 100 < 0.2
2015 2015-12-15 0.2 100 < 0.2
2015 2015-09-23 0.2 100 < 0.2
2015 2015-09-23 0.2 100 < 0.2
2015 2015-06-15 0.2 100 < 0.2
2015 2015-06-15 0.2 100 < 0.2
2015 2015-03-18 0.2 100 < 0.2
2015 2015-03-18 0.2 100 < 0.2
[+] Expand Test Data
chromium-6 0.03 0 0.0691 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-12-15 0.03 0 0.11
2015 2015-12-15 0.03 0 0.085
2015 2015-09-23 0.03 0 0.074
2015 2015-09-23 0.03 0 0.0559
2015 2015-06-15 0.03 0 0.054
2015 2015-06-15 0.03 0 0.038
2015 2015-03-18 0.03 0 0.0602
2015 2015-03-18 0.03 0 0.0755
[+] Expand Test Data
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-12-15 1 70 < 1
2015 2015-12-15 1 70 < 1
2015 2015-09-23 1 70 < 1
2015 2015-09-23 1 70 < 1
2015 2015-06-15 1 70 < 1
2015 2015-06-15 1 70 < 1
2015 2015-03-18 1 70 < 1
2015 2015-03-18 1 70 < 1
[+] Expand Test Data
manganese 1 0 5.4721 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-12-15 1 0 4.9
2015 2015-12-15 1 0 8
2015 2015-09-23 1 0 3.38
2015 2015-09-23 1 0 < 1
2015 2015-06-15 1 0 1.8
2015 2015-06-15 1 0 2.567
2015 2015-03-18 1 0 8.93
2015 2015-03-18 1 0 14.2
[+] Expand Test Data
molybdenum 1 40 0.1375 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-12-15 1 40 < 1
2015 2015-12-15 1 40 1.1
2015 2015-09-23 1 40 < 1
2015 2015-09-23 1 40 < 1
2015 2015-06-15 1 40 < 1
2015 2015-06-15 1 40 < 1
2015 2015-03-18 1 40 < 1
2015 2015-03-18 1 40 < 1
[+] Expand Test Data
strontium 0.3 1500 563.9013 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-12-15 0.3 1500 760
2015 2015-12-15 0.3 1500 860
2015 2015-09-23 0.3 1500 519
2015 2015-09-23 0.3 1500 573
2015 2015-06-15 0.3 1500 329.527
2015 2015-06-15 0.3 1500 306.683
2015 2015-03-18 0.3 1500 609
2015 2015-03-18 0.3 1500 554
[+] Expand Test Data
vanadium 0.2 21 0.3698 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-12-15 0.2 21 0.32
2015 2015-12-15 0.2 21 0.33
2015 2015-09-23 0.2 21 0.455
2015 2015-09-23 0.2 21 0.386
2015 2015-06-15 0.2 21 0.405
2015 2015-06-15 0.2 21 0.33
2015 2015-03-18 0.2 21 0.36
2015 2015-03-18 0.2 21 0.372
[+] Expand Test Data
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-12-15 0.03 6.14 < 0.03
2015 2015-09-23 0.03 6.14 < 0.03
2015 2015-06-15 0.03 6.14 < 0.03
2015 2015-03-18 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 2015-12-15 0.03 0.0004 < 0.03
2015 2015-09-23 0.03 0.0004 < 0.03
2015 2015-06-15 0.03 0.0004 < 0.03
2015 2015-03-18 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 2015-12-15 0.1 0.0103 < 0.1
2015 2015-09-23 0.1 0.0103 < 0.1
2015 2015-06-15 0.1 0.0103 < 0.1
2015 2015-03-18 0.1 0.0103 < 0.1
[+] Expand Test Data
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-12-15 0.07 0.35 < 0.07
2015 2015-09-23 0.07 0.35 < 0.07
2015 2015-06-15 0.07 0.35 < 0.07
2015 2015-03-18 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 2015-12-15 0.2 140 < 0.2
2015 2015-09-23 0.2 140 < 0.2
2015 2015-06-15 0.2 140 < 0.2
2015 2015-03-18 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 2015-12-15 0.2 2.69 < 0.2
2015 2015-09-23 0.2 2.69 < 0.2
2015 2015-06-15 0.2 2.69 < 0.2
2015 2015-03-18 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 2015-12-15 0.06 90 < 0.06
2015 2015-09-23 0.06 90 < 0.06
2015 2015-06-15 0.06 90 < 0.06
2015 2015-03-18 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 2015-12-15 0.08 0 < 0.08
2015 2015-09-23 0.08 0 < 0.08
2015 2015-06-15 0.08 0 < 0.08
2015 2015-03-18 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 2015-12-15 0.09 0 < 0.09
2015 2015-09-23 0.09 0 < 0.09
2015 2015-06-15 0.09 0 < 0.09
2015 2015-03-18 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 2015-12-15 0.01 0 < 0.01
2015 2015-09-23 0.01 0 < 0.01
2015 2015-06-15 0.01 0 < 0.01
2015 2015-03-18 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 2015-12-15 0.03 0 < 0.03
2015 2015-09-23 0.03 0 < 0.03
2015 2015-06-15 0.03 0 < 0.03
2015 2015-03-18 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 2015-12-15 0.02 0 < 0.02
2015 2015-09-23 0.02 0 < 0.02
2015 2015-06-15 0.02 0 < 0.02
2015 2015-03-18 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 2015-12-15 0.02 0.07 < 0.02
2015 2015-09-23 0.02 0.07 < 0.02
2015 2015-06-15 0.02 0.07 < 0.02
2015 2015-03-18 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 2015-12-15 0.04 0.07 < 0.04
2015 2015-09-23 0.04 0.07 < 0.04
2015 2015-06-15 0.04 0.07 < 0.04
2015 2015-03-18 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 2015-12-15 0.04 0 < 0.04
2015 2015-09-23 0.04 0 < 0.04
2015 2015-06-15 0.04 0 < 0.04
2015 2015-03-18 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
10107 lead 2018-01-01 2018-12-31 0.003mg/L
10095 lead 2015-01-01 2015-12-31 0.002mg/L
10083 lead 2012-01-01 2012-12-31 0.006mg/L
10069 lead 2009-01-01 2009-06-30 0.004mg/L
10067 lead 2008-07-01 2008-12-31 0.004mg/L

Violations

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

Compliance Dates Rule Violation Type Contaminant Name Status
2007-11-01 - 2007-11-30 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
- N/A Radionuclides Monitoring, Regular Combined Radium (-226 and -228) Known
- N/A Radionuclides Monitoring, Regular Combined Radium (-226 and -228) Returned to Compliance
- N/A Radionuclides Monitoring, Regular Gross Alpha, Excl. Radon and U Known
- N/A Radionuclides Monitoring, Regular Gross Alpha, Excl. Radon and U Returned to Compliance
- N/A Miscellaneous Treatment Techniques Acrylamide Returned to Compliance
- N/A Miscellaneous Treatment Techniques Epichlorohydrin 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.

Unable to identify any nearby water testing labs near 57703.

Water Bill Information

Convenient information about your water service.

Unable to identify any billing information about Rapid Valley Sanitary District (SD4600274).

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.