Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NN0400174
PWS Name	Chinle-Many Farms-Del Muerto NTUA
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Ground water
Primacy Type	Tribal
Is Wholesaler?	No
Population Served	8458
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, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	040017430245612021	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	040017430295012021	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	040017403101512020	Returned to Compliance	01-JAN-2020	31-MAR-2020	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	040017403107512020	Returned to Compliance	01-JAN-2020	31-MAR-2020	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	04001743A800042017	Returned to Compliance	01-APR-2017	30-APR-2017	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	04001743A800032017	Returned to Compliance	01-MAR-2017	31-MAR-2017	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	04001743A800022017	Returned to Compliance	01-FEB-2017	28-FEB-2017	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	04001743A800012017	Returned to Compliance	01-JAN-2017	31-JAN-2017	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	040017430245612017	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	040017430295012017	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	040017422310082014	Returned to Compliance	01-AUG-2014	31-AUG-2014	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	0400174233100122012	Returned to Compliance	01-DEC-2012	31-DEC-2012	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	0400174233100112012	Returned to Compliance	01-NOV-2012	30-NOV-2012	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	040017422310092011	Returned to Compliance	01-SEP-2011	30-SEP-2011	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	040017403298412011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	040017403298512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	040017403298712011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	040017403298912011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	040017403299012011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	040017403299112011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	040017403299212011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	040017403299612011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	040017403293112011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	040017403294612011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	040017403298312011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	040017403107412011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	040017403298212011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	040017403298112011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	040017403298012011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	040017403297912011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	040017403297712011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	040017403297612011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	040017403296912011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	040017403296812011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	040017403296412011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	040017403295512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	040017403102012011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	040017403238012011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	040017403237812011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	040017403104512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	040017403103512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	040017403102512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	040017403102412011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	040017403101512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	040017403101012011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	040017403100512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	040017403108512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	040017403107512011	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	040017403104012010	Returned to Compliance	01-JAN-2010	31-DEC-2010	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	040017403104112010	Returned to Compliance	01-JAN-2010	31-DEC-2010	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
0400174OX08022239653	040017430295012021	SOX	State Compliance achieved	02-AUG-2022	State	RTC, sample received 8/2/22.
0400174OX08022239654	040017430245612021	SOX	State Compliance achieved	02-AUG-2022	State	RTC, sample received 8/2/22.
0400174FJ07152037666	040017403107512020	SFJ	State Formal Notice of Violation issued	15-JUL-2020	State	NOV issued for failure to collect quarterly samples for Cadmium and Beryllium.
0400174FJ07152037665	040017403101512020	SFJ	State Formal Notice of Violation issued	15-JUL-2020	State	NOV issued for failure to collect quarterly samples for Cadmium and Beryllium.
0400174OX08211836471	040017430295012017	SOX	State Compliance achieved	21-AUG-2018	State	RTC, Stage 2 DBP sampled on 08/21/2018.
0400174OX08211836472	040017430245612017	SOX	State Compliance achieved	21-AUG-2018	State	RTC, Stage 2 DBP sampled on 08/21/2018.
0400174OX11131733831	04001743A800012017	SOX	State Compliance achieved	13-NOV-2017	State	RTC, PN received. Failure to collect appropriate numbers of monthly bactees during January, February, March, and April 2017. NTUA has collected appropriate bactee numbers since May 2017.
0400174OX11131733833	04001743A800042017	SOX	State Compliance achieved	13-NOV-2017	State	RTC, PN received. Failure to collect appropriate numbers of monthly bactees during January, February, March, and April 2017. NTUA has collected appropriate bactee numbers since May 2017.
0400174OX11131733830	04001743A800032017	SOX	State Compliance achieved	13-NOV-2017	State	RTC, PN received. Failure to collect appropriate numbers of monthly bactees during January, February, March, and April 2017. NTUA has collected appropriate bactee numbers since May 2017.
0400174OX11131733832	04001743A800022017	SOX	State Compliance achieved	13-NOV-2017	State	RTC, PN received. Failure to collect appropriate numbers of monthly bactees during January, February, March, and April 2017. NTUA has collected appropriate bactee numbers since May 2017.
0400174OX08011632729	040017403103512011	SOX	State Compliance achieved	01-AUG-2016	State	RTC, sample results received.
0400174OX08011632731	040017403108512011	SOX	State Compliance achieved	01-AUG-2016	State	RTC, sample results received.
0400174OX08011632730	040017403107412011	SOX	State Compliance achieved	01-AUG-2016	State	RTC, sample results received.
0400174OX10161531240	040017403297612011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531246	040017403299612011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531243	040017403299212011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531248	040017403299112011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531233	040017403299012011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531244	040017403298912011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531247	040017403298712011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531252	040017403237812011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531241	040017403238012011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531231	040017403293112011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531232	040017403294612011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531250	040017403295512011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531251	040017403296412011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531245	040017403296812011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531237	040017403296912011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531230	040017403102412011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd CN data on 11/16/15, data collected on 5/26/15 for EP11 well 10-0595
0400174OX10161531238	040017403297712011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531249	040017403297912011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531235	040017403298012011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531239	040017403298112011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531234	040017403298212011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531242	040017403298312011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531236	040017403298412011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX10161531253	040017403298512011	SOX	State Compliance achieved	16-OCT-2015	State	Rec'd VOC data on 10/16/15 for Well 10-0595
0400174OX05261532044	040017403107512011	SOX	State Compliance achieved	26-MAY-2015	State	RTC, sample results received.
0400174OX05261532043	040017403104512011	SOX	State Compliance achieved	26-MAY-2015	State	RTC, sample results received.
0400174OX05261531776	040017403102512011	SOX	State Compliance achieved	26-MAY-2015	State	RTC, sample results received.
0400174OX05261532042	040017403102012011	SOX	State Compliance achieved	26-MAY-2015	State	RTC, sample results received.
0400174OX05261532041	040017403101512011	SOX	State Compliance achieved	26-MAY-2015	State	RTC, sample results received.
0400174OX05261532040	040017403101012011	SOX	State Compliance achieved	26-MAY-2015	State	RTC, sample results received.
0400174OX05261532039	040017403100512011	SOX	State Compliance achieved	26-MAY-2015	State	RTC, sample results received.
0400174IE11171429189	040017422310082014	SIE	State Public Notification requested	17-NOV-2014	State	NOV, PN required.
0400174OX01111323560	0400174233100122012	SOX	State Compliance achieved	11-JAN-2013	State	2012 Dec TCR M/R. RTC, received NTUA TCR results on 01-11-2013.
0400174OX12111223642	0400174233100112012	SOX	State Compliance achieved	11-DEC-2012	State	2012 Nov TCR M/R. RTC, received NTUA TCR results on 12-11-2012.
0400174OX02211218344	040017403295512008	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013. Well #10R-156 had not been used since 2001.
0400174OX02211218345	040017403296412008	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013. Well #10R-156 had not been used since 2001.
0400174OX02211218339	040017403296812008	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013. Well #10R-156 had not been used since 2001.

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
10T-567A (Chinle 3)	0400174GW001	Yes	Well	Ground water	Other	Inactive
10-0595 (Chinle 4)	0400174GW011	Yes	Well	Ground water	Permanent	Active
10T-566 (Many Farms North)	0400174GW010	Yes	Well	Ground water	Other	Inactive
10T-567 (Chinle 2)	0400174GW009	Yes	Well	Ground water	Other	Inactive
10T-242A (Chinle South)	0400174GW008	Yes	Well	Ground water	Other	Inactive
10T-156 (Chinle)	0400174GW007	Yes	Well	Ground water	Other	Inactive
10K-232 (Chinle BIA 1)	0400174GW005	Yes	Well	Ground water	Other	Inactive
10-0580 (Many Farms South)	0400174GW004	Yes	Well	Ground water	Other	Inactive
10T-567B (Chinle 3)	0400174GW003	Yes	Well	Ground water	Other	Inactive
10R-156A (Chinle BIA 1 North)	0400174GW002	Yes	Well	Ground water	Other	Inactive
10-0595 Entry Point (Chinle 4)	0400174EP011	No	Common Headers	-	-	Active
10T-567A Entry Point (Chinle 3)	0400174EP001	No	Common Headers	-	-	Inactive
10R-156A Entry Point (Chinle BIA 1 North)	0400174EP002	No	Common Headers	-	-	Inactive
10T-567B Entry Point (Chinle 3)	0400174EP003	No	Common Headers	-	-	Inactive
10K-232 Entry Point (Chinle BIA)	0400174EP005	No	Common Headers	-	-	Inactive
10T-567 Entry Point (Chinle 2)	0400174EP009	No	Common Headers	-	-	Inactive
NN0400174 Chinle/Many Farms Distribution System	0400174DS001	No	Distribution System/Zone	-	-	Active
NN0400174 Del Muerto 1 Lower Distr System	0400174DS002	No	Distribution System/Zone	-	-	Active
NN0400174 Del Muerto 2 Upper Distr System	0400174DS003	No	Distribution System/Zone	-	-	Active
NN0400174 Beautiful Valley Distribution System	0400174DS004	No	Distribution System/Zone	-	-	Active
Del Muerto 1 Booster Station	0400174PF001	No	Pump Facility	-	-	Active
Del Muerto 2 Booster Station	0400174PF002	No	Pump Facility	-	-	Active
Beautiful Valley Booster Station	0400174PF003	No	Pump Facility	-	-	Active
Garcia Booster Station	0400174PF004	No	Pump Facility	-	-	Active
Carson Mesa Booster Station	0400174PF005	No	Pump Facility	-	-	Active
Ventana Mesa Booster Station	0400174PF006	No	Pump Facility	-	-	Active
Chinle BIA East 1	0400174ST001	No	Storage	-	-	Active
Chinle BIA West 2	0400174ST002	No	Storage	-	-	Active
Chinle East Tank A	0400174ST003	No	Storage	-	-	Active
Chinle West	0400174ST004	No	Storage	-	-	Active
Del Muerto Tank C	0400174ST005	No	Storage	-	-	Active
Del Muerto Booster 2 Tank B-1	0400174ST006	No	Storage	-	-	Active
Many Farms 1	0400174ST007	No	Storage	-	-	Active
Many Farms 2	0400174ST008	No	Storage	-	-	Active
Del Muerto Booster 2 Tank B-2	0400174ST009	No	Storage	-	-	Active
Beautiful Valley Tank	0400174ST010	No	Storage	-	-	Active
Ventana Tank	0400174ST011	No	Storage	-	-	Active
Carson Mesa Tank	0400174ST012	No	Storage	-	-	Active
Spider Rock Tank A	0400174ST013	No	Storage	-	-	Active
Spider Rock Tank B	0400174ST014	No	Storage	-	-	Active
10-0595 Treatment (Chinle 4)	0400174TP011	No	Treatment Plant	-	-	Active
10T-567A Treatment (Chinle 3)	0400174TP001	No	Treatment Plant	-	-	Inactive
10R-156A Treatment (Chinle BIA)	0400174TP002	No	Treatment Plant	-	-	Inactive
10T-567B Treatment (Chinle 3)	0400174TP003	No	Treatment Plant	-	-	Inactive
10K-232 Treatment (Chinle BIA)	0400174TP005	No	Treatment Plant	-	-	Inactive

1 - 45 of 45

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
10T-567A Treatment (Chinle 3)	0400174TP001	Sequestration	Iron removal
10T-567A Treatment (Chinle 3)	0400174TP001	Gaseous Chlorination, Post	Disinfection
10R-156A Treatment (Chinle BIA)	0400174TP002	Sequestration	Iron removal
10R-156A Treatment (Chinle BIA)	0400174TP002	Gaseous Chlorination, Post	Disinfection
10T-567B Treatment (Chinle 3)	0400174TP003	Sequestration	Iron removal
10T-567B Treatment (Chinle 3)	0400174TP003	Gaseous Chlorination, Post	Disinfection
10K-232 Treatment (Chinle BIA)	0400174TP005	Gaseous Chlorination, Post	Disinfection
10-0595 Treatment (Chinle 4)	0400174TP011	Sequestration	Iron removal
10-0595 Treatment (Chinle 4)	0400174TP011	Gaseous Chlorination, Post	Disinfection

1 - 9 of 9

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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