Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NN0403003
PWS Name	Kayenta NTUA
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Ground water
Primacy Type	Tribal
Is Wholesaler?	No
Population Served	3844
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	040300303104012024	Known	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	040300303104112024	Known	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	040300330295012020	Returned to Compliance	01-JAN-2020	31-DEC-2020	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	040300330245612020	Returned to Compliance	01-JAN-2020	31-DEC-2020	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	040300303294672017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	040300303293172017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	040300303299672017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	040300303299272017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	040300303299172017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	040300303299072017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	040300303298972017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	040300303298772017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	040300303298572017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	040300303298472017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	040300303298372017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	040300303298272017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	040300303298172017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	040300303298072017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	040300303297972017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	040300303297772017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	040300303297672017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	040300303296972017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	040300303296872017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	040300303296472017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	040300303295972017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	040300303295572017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	040300303238072017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	040300303237872017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	040300303232672017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	040300303230672017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	040300303227472017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	040300303211072017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	040300303210572017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	040300303238372017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	040300303206772017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	040300303206572017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,3,7,8-TCDD	040300303206372017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	040300303205172017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	040300303205072017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	040300303204672017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	040300303204272017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	040300303204172017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	040300303204072017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	040300303203972017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	040300303203772017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	040300303203672017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	040300303203572017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	040300303203472017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	040300303203372017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	040300303203272017	Returned to Compliance	01-JUL-2017	30-SEP-2017	No

1 - 50 of 103

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
0403003FJ04252542353	040300303104112024	SFJ	State Formal Notice of Violation issued	25-APR-2025	State	NOV, PN required.
0403003FJ04252542352	040300303104012024	SFJ	State Formal Notice of Violation issued	25-APR-2025	State	NOV, PN required.
0403003FJ08282441409	04030035A800042016	SFJ	State Formal Notice of Violation issued	28-AUG-2024	State	NOV issued for failure to prepare a site sampling plan for total coliform.
0403003OX02242239092	0403003350600102013	SOX	State Compliance achieved	24-FEB-2022	State	Sample Site Plan approved 02/24/2022 for DBPs Stage 2.
0403003OX06282138865	040300330245612020	SOX	State Compliance achieved	28-JUN-2021	State	2020 DBPs Stage 2 M/R. Return To Compliance. Full sample sets collected 06/28/2021.
0403003OX06282138864	040300330295012020	SOX	State Compliance achieved	28-JUN-2021	State	2020 DBPs Stage 2 M/R. Return To Compliance. Full sample sets collected 06/28/2021.
0403003FJ12011733991	040300303200572017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734017	040300303201072017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734018	040300303201572017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734021	040300303202072017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734024	040300303203172017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011733989	040300303203272017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011733990	040300303203372017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011733992	040300303203472017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734025	040300303203572017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011733995	040300303203672017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011733997	040300303203772017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011733987	040300303203972017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011733996	040300303204072017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011733988	040300303204172017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011733994	040300303204272017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734010	040300303204672017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734009	040300303205072017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734008	040300303205172017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011733998	040300303206372017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734015	040300303206572017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734016	040300303206772017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734013	040300303210572017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734022	040300303211072017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011733993	040300303227472017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734023	040300303230672017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734020	040300303232672017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734039	040300303237872017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734028	040300303238072017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734019	040300303238372017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734012	040300303293172017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734014	040300303294672017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734037	040300303295572017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734011	040300303295972017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734038	040300303296472017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734032	040300303296872017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734003	040300303296972017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734027	040300303297672017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734004	040300303297772017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734036	040300303297972017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734001	040300303298072017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734026	040300303298172017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734000	040300303298272017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734029	040300303298372017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.
0403003FJ12011734002	040300303298472017	SFJ	State Formal Notice of Violation issued	01-DEC-2017	State	NOV issued for failure to collect quarterly sampling of this new well.

1 - 50 of 103

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
08T-555 (Kayenta 2)	0403003GW002	Yes	Well	Ground water	Other	Inactive
Kayenta 8 (Kayenta 8)	0403003GW008	Yes	Well	Ground water	Permanent	Active
08T-550 (Kayenta 7)	0403003GW007	Yes	Well	Ground water	Permanent	Active
08T-551 (Kayenta 5)	0403003GW005	Yes	Well	Ground water	Permanent	Active
08T-544 (Kayenta 4)	0403003GW004	Yes	Well	Ground water	Permanent	Active
08PH-517 (Kayenta 3)	0403003GW003	Yes	Well	Ground water	Permanent	Active
08SS-450 (Kayenta 1)	0403003GW001	Yes	Well	Ground water	Permanent	Active
08T-552 (Kayenta 6)	0403003GW006	Yes	Well	Ground water	Other	Inactive
08S-450 Entry Point (Kayenta 1)	0403003EP001	No	Common Headers	-	-	Active
08PH-517 Entry Point (Kayenta 3)	0403003EP003	No	Common Headers	-	-	Active
08T-544 Entry Point (Kayenta 4)	0403003EP004	No	Common Headers	-	-	Active
08T-551 Entry Point (Kayenta 5)	0403003EP005	No	Common Headers	-	-	Active
08T-552 Entry Point (Kayenta 6)	0403003EP006	No	Common Headers	-	-	Active
08T-550 Entry Point (Kayenta 7)	0403003EP007	No	Common Headers	-	-	Active
Kayenta 8 Entry Point (Kayenta 8)	0403003EP008	No	Common Headers	-	-	Active
08T-555 Entry Point (Kayenta 2)	0403003EP002	No	Common Headers	-	-	Inactive
NN0403003 Kayenta Distribution System	0403003DS001	No	Distribution System/Zone	-	-	Active
NN0403003 Wetherill Heights Distribution System	0403003DS002	No	Distribution System/Zone	-	-	Active
NN0403003 South Extension Distribution System	0403003DS003	No	Distribution System/Zone	-	-	Active
Wetherill Heights Booster Station	0403003PF001	No	Pump Facility	-	-	Active
Bird Springs Booster Station	0403003PF003	No	Pump Facility	-	-	Active
Basha Booster Station	0403003PF004	No	Pump Facility	-	-	Active
South Extension Booster Station	0403003PF005	No	Pump Facility	-	-	Active
Wetherill Heights #1 (East) Tank	0403003ST001	No	Storage	-	-	Active
Wetherill Heights #2 (West) Tank	0403003ST002	No	Storage	-	-	Active
Kayenta 2 Tank	0403003ST003	No	Storage	-	-	Active
Kayenta 1 Tank	0403003ST004	No	Storage	-	-	Active
Kayenta South Extension East	0403003ST006	No	Storage	-	-	Active
Kayenta South Extension West	0403003ST007	No	Storage	-	-	Active
Kayenta South 1 Tank	0403003ST005	No	Storage	-	-	Inactive
08S-450 Treatment (Kayenta 1)	0403003TP001	No	Treatment Plant	-	-	Active
08PH-517 Treatment (Kayenta 3)	0403003TP003	No	Treatment Plant	-	-	Active
08T-544 Treatment (Kayenta 4)	0403003TP004	No	Treatment Plant	-	-	Active
08T-551 Treatment (Kayenta 5)	0403003TP005	No	Treatment Plant	-	-	Active
08T-552 Treatment (Kayenta 6)	0403003TP006	No	Treatment Plant	-	-	Active
08T-550 Treatment (Kayenta 7)	0403003TP007	No	Treatment Plant	-	-	Active
Well #8 Treatment (Kayenta 8)	0403003TP008	No	Treatment Plant	-	-	Active
08T-555 Treatment (Kayenta 2)	0403003TP002	No	Treatment Plant	-	-	Inactive

1 - 38 of 38

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
08S-450 Treatment (Kayenta 1)	0403003TP001	Gaseous Chlorination, Post	Disinfection
08S-450 Treatment (Kayenta 1)	0403003TP001	Fluoridation	Other
08T-555 Treatment (Kayenta 2)	0403003TP002	Hypochlorination, Post	Disinfection
08T-555 Treatment (Kayenta 2)	0403003TP002	Fluoridation	Other
08PH-517 Treatment (Kayenta 3)	0403003TP003	Gaseous Chlorination, Post	Disinfection
08PH-517 Treatment (Kayenta 3)	0403003TP003	Fluoridation	Other
08T-544 Treatment (Kayenta 4)	0403003TP004	Gaseous Chlorination, Post	Disinfection
08T-544 Treatment (Kayenta 4)	0403003TP004	Fluoridation	Other
08T-551 Treatment (Kayenta 5)	0403003TP005	Gaseous Chlorination, Post	Disinfection
08T-551 Treatment (Kayenta 5)	0403003TP005	Fluoridation	Other
08T-552 Treatment (Kayenta 6)	0403003TP006	Gaseous Chlorination, Post	Disinfection
08T-552 Treatment (Kayenta 6)	0403003TP006	Fluoridation	Other
08T-550 Treatment (Kayenta 7)	0403003TP007	Gaseous Chlorination, Post	Disinfection
08T-550 Treatment (Kayenta 7)	0403003TP007	Fluoridation	Other
Well #8 Treatment (Kayenta 8)	0403003TP008	Hypochlorination, Post	Disinfection
Well #8 Treatment (Kayenta 8)	0403003TP008	Fluoridation	Other

1 - 16 of 16

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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