Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	093500302
PWS Name	Rock Springs Community - NTUA
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Ground water
Primacy Type	Tribal
Is Wholesaler?	No
Population Served	1574
County Served

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MR	Monitoring, Regular	Nitrate Rule	Nitrate	350030203104012025	Known	01-JAN-2025	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	350030203203912016	Returned to Compliance	01-JAN-2016	31-MAR-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	350030203299112016	Returned to Compliance	01-JAN-2016	31-MAR-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	3500302032039102015	Returned to Compliance	01-OCT-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	3500302032991102015	Returned to Compliance	01-OCT-2015	31-DEC-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	350030203203972015	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	350030203299172015	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	350030224310052015	Returned to Compliance	01-MAY-2015	31-MAY-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	350030203203942015	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	350030203299142015	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	350030203203912015	Returned to Compliance	01-JAN-2015	31-MAR-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	350030203299112015	Returned to Compliance	01-JAN-2015	31-MAR-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	3500302032991102014	Returned to Compliance	01-OCT-2014	31-DEC-2014	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	350030203299172014	Returned to Compliance	01-JUL-2014	30-SEP-2014	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	350030203299142014	Returned to Compliance	01-APR-2014	30-JUN-2014	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	350030227295012014	Returned to Compliance	01-JAN-2014	31-DEC-2014	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	350030227245612014	Returned to Compliance	01-JAN-2014	31-DEC-2014	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	350030203299112014	Returned to Compliance	01-JAN-2014	31-MAR-2014	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	350030203107412011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	350030203102012011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	350030203107512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	350030203108512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	350030203100512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	350030203101012011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	350030203101512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	350030203102412011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	350030203102512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	350030203103512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	350030203104012011	Returned to Compliance	01-JAN-2011	31-DEC-2011	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	350030203104512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	350030203400012008	Returned to Compliance	01-JAN-2008	31-DEC-2013	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	350030203401012008	Returned to Compliance	01-JAN-2008	31-DEC-2013	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3500302243100112004	Returned to Compliance	01-NOV-2004	30-NOV-2004	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	350030271700072002	Returned to Compliance	01-JUL-2002	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	350030223310052002	Returned to Compliance	01-MAY-2002	31-MAY-2002	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	350030203296412001	Returned to Compliance	01-JAN-2001	31-DEC-2001	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	350030203295512001	Returned to Compliance	01-JAN-2001	31-DEC-2001	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	350030203238312001	Returned to Compliance	01-JAN-2001	31-DEC-2001	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	350030203101012001	Returned to Compliance	01-JAN-2001	31-DEC-2001	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	350030203108512001	Returned to Compliance	01-JAN-2001	31-DEC-2001	No

1 - 40 of 40

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
3500302OX09301686082	350030203299112016	EOX	Federal Compliance achieved	30-SEP-2016	Region	Toluene sampled on 6/14/2016 and 8/1/2016.
3500302OX09301686081	3500302032991102015	EOX	Federal Compliance achieved	30-SEP-2016	Region	Toluene sampled on 6/14/2016 and 8/1/2016.
3500302OX09301686079	3500302032039102015	EOX	Federal Compliance achieved	30-SEP-2016	Region	Di (2-ethylhexyl) phthalate sampled on 6/14/2016 and 8/1/2016.
3500302OX09301686080	350030203203912016	EOX	Federal Compliance achieved	30-SEP-2016	Region	Di (2-ethylhexyl) phthalate sampled on 6/14/2016 and 8/1/2016.
3500302OX08081686548	350030227245612014	EOX	Federal Compliance achieved	08-AUG-2016	Region	Sampled for DBPs on 8/8/2016.
3500302OX08081686547	350030227295012014	EOX	Federal Compliance achieved	08-AUG-2016	Region	Sampled for DBPs on 8/8/2016.
3500302OX05201684696	350030203102412011	EOX	Federal Compliance achieved	20-MAY-2016	Region	Wavier for Cyanide for EP001 expires December 31, 2016. Cyanide sampled at EP002 on July 12, 2015.
3500302OX05201684697	350030203203912015	EOX	Federal Compliance achieved	20-MAY-2016	Region	Di (2-ethylhexyl)phthalate sampled on July 21, 2015.
3500302OX05201684698	350030203203942015	EOX	Federal Compliance achieved	20-MAY-2016	Region	Di(2-ethylhexyl)phthalate samlped on July 21, 2015.
3500302OX07301585882	350030203203972015	EOX	Federal Compliance achieved	30-JUL-2015	Region	Contaminant sampled in July 2015.
3500302OX07301585881	350030203299172015	EOX	Federal Compliance achieved	30-JUL-2015	Region	Toluene sampled in July 2015.
3500302OX07301585876	350030203299142014	EOX	Federal Compliance achieved	30-JUL-2015	Region	Toluene sampled in July 2015.
3500302OX07301585880	350030203299142015	EOX	Federal Compliance achieved	30-JUL-2015	Region	Toluene sampled in July 2015.
3500302OX07301585877	350030203299172014	EOX	Federal Compliance achieved	30-JUL-2015	Region	Toluene sampled in July 2015.
3500302OX07301585879	350030203299112015	EOX	Federal Compliance achieved	30-JUL-2015	Region	Toluene sampled in July 2015.
3500302OX07301585878	3500302032991102014	EOX	Federal Compliance achieved	30-JUL-2015	Region	Toluene sampled in July 2015.
3500302OX07301585875	350030203299112014	EOX	Federal Compliance achieved	30-JUL-2015	Region	Toluene sampled in July 2015.
3500302OX06041475759	350030203108512011	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in September 2013.
3500302OX06041475754	350030203107512011	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in September 2013.
3500302OX06041475752	350030203104512011	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in September 2013.
3500302OX06041475751	350030203103512011	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in September 2013.
3500302OX06041475750	350030203102512011	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in September 2013.
3500302OX06041475758	350030203102012011	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in September 2013.
3500302OX06041475757	350030203101512011	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in September 2013.
3500302OX06041475756	350030203101012011	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in September 2013.
3500302OX06041475755	350030203100512011	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in September 2013.
3500302OX06041476948	350030203401012008	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in May 2008.
3500302OX06041476949	350030203400012008	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in May 2008.
3500302OX06041475753	350030203107412011	EOX	Federal Compliance achieved	04-JUN-2014	Region	Sampled in September 2013.
3500302OX11061270411	350030203104012011	EOX	Federal Compliance achieved	06-NOV-2012	Region	2012 Nitrate result received by USEPA on October 31, 2012.
3500302OX08171182328	350030224310052015	EOX	Federal Compliance achieved	17-AUG-2011	Region	Sample results received late. Monthly coliform samples collected in subsequent months.
3500302OX04130728329	350030223310052002	EOX	Federal Compliance achieved	13-APR-2007	Region	historic rtcs
3500302OX04130728331	350030203295512001	EOX	Federal Compliance achieved	13-APR-2007	Region	historic rtcs
3500302OX04130728335	350030203238312001	EOX	Federal Compliance achieved	13-APR-2007	Region	historic rtcs
3500302OX04130728334	350030203108512001	EOX	Federal Compliance achieved	13-APR-2007	Region	historic rtcs
3500302OX04130728333	350030203101012001	EOX	Federal Compliance achieved	13-APR-2007	Region	historic rtcs
3500302OX04130728330	350030271700072002	EOX	Federal Compliance achieved	13-APR-2007	Region	historic rtcs
3500302OX04130728348	3500302243100112004	EOX	Federal Compliance achieved	13-APR-2007	Region	historic rtcs
3500302OX04130728332	350030203296412001	EOX	Federal Compliance achieved	13-APR-2007	Region	historic rtcs

1 - 39 of 39

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
Well 1 (16T-608)	3500302GW001	Yes	Well	Ground water	Permanent	Active
Well 2 (16T-585)	3500302GW002	Yes	Well	Ground water	Permanent	Active
EP fpr TP001	3500302EP001	No	Common Headers	-	-	Active
EP for TP002	3500302EP002	No	Common Headers	-	-	Active
PWS# 3500302 distribution system	3500302DS001	No	Distribution System/Zone	-	-	Active
Storage Tank 1	3500302ST001	No	Storage	-	-	Active
Storage Tank 2	3500302ST002	No	Storage	-	-	Active
Storage Tank 3 (New Tank)	3500302ST003	No	Storage	-	-	Active
Gas Cl2 and Fluoride for Well 1 (TP for GW001)	3500302TP001	No	Treatment Plant	-	-	Active
Gas Cl2 and Fluoride for Well 2 (TP for GW002)	3500302TP002	No	Treatment Plant	-	-	Active

1 - 10 of 10

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
Gas Cl2 and Fluoride for Well 1 (TP for GW001)	3500302TP001	Gaseous Chlorination, Post	Disinfection
Gas Cl2 and Fluoride for Well 1 (TP for GW001)	3500302TP001	Fluoridation	Other
Gas Cl2 and Fluoride for Well 2 (TP for GW002)	3500302TP002	Gaseous Chlorination, Post	Disinfection

1 - 3 of 3

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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