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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDOK2001702
PWS NameCOTTON CO RWD #2
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served3000
County ServedCotton

Note


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.

PWS Violation


Violations

Violation Category CodeViolation Type DescriptionRule NameContaminant NameViolation IDCompliance Status DescriptionCompliance Period Begin DateCompliance Period End DateIs Health Based Ind
TTLSL InventoryLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS134436Open17-OCT-2024 - Yes
RPTLSL ReportingLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS134437Open17-OCT-2024 - No
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134409Returned to Compliance01-JAN-202031-MAR-2020Yes
MCLMaximum Contaminant Level Violation, AverageInorganic ChemicalsFluoride134410Returned to Compliance01-JAN-202031-MAR-2020Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134365Returned to Compliance01-OCT-201931-DEC-2019Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate-Nitrite134360Returned to Compliance01-OCT-201931-DEC-2019Yes
MCLMaximum Contaminant Level Violation, AverageInorganic ChemicalsFluoride134366Returned to Compliance01-OCT-201931-DEC-2019Yes
MCLMaximum Contaminant Level Violation, AverageInorganic ChemicalsFluoride134364Returned to Compliance01-JUL-201930-SEP-2019Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134363Returned to Compliance01-JUL-201930-SEP-2019Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate-Nitrite134359Returned to Compliance01-JUL-201930-SEP-2019Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134358Returned to Compliance01-APR-201930-JUN-2019Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134357Returned to Compliance01-JAN-201931-MAR-2019Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134356Returned to Compliance01-OCT-201831-DEC-2018Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134355Returned to Compliance01-JUL-201830-SEP-2018Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134354Returned to Compliance01-APR-201830-JUN-2018Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134353Returned to Compliance01-JAN-201831-MAR-2018Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134350Returned to Compliance01-OCT-201731-DEC-2017Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134349Returned to Compliance01-JUL-201730-SEP-2017Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134348Returned to Compliance01-APR-201730-JUN-2017Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134345Returned to Compliance01-JAN-201731-MAR-2017Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134343Returned to Compliance01-OCT-201631-DEC-2016Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134342Returned to Compliance01-JUL-201630-SEP-2016Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134341Returned to Compliance01-APR-201630-JUN-2016Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134340Returned to Compliance01-JAN-201631-MAR-2016Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134338Known01-OCT-201531-DEC-2015Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134337Known01-JUL-201530-SEP-2015Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134335Known01-APR-201530-JUN-2015Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134336Known01-JAN-201531-MAR-2015Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134333Known01-OCT-201431-DEC-2014Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134332Known01-JUL-201430-SEP-2014Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134331Known01-APR-201430-JUN-2014Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134330Known01-JAN-201431-MAR-2014Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134329Known01-OCT-201331-DEC-2013Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134327Known01-JUL-201330-SEP-2013Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate-Nitrite134328Returned to Compliance01-JUL-201330-SEP-2013Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134326Known01-APR-201330-JUN-2013Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134325Known01-JAN-201331-MAR-2013Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134323Known01-OCT-201231-DEC-2012Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic134322Known01-JUL-201230-SEP-2012Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate-Nitrite134317Returned to Compliance01-JUL-201130-SEP-2011Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate-Nitrite134316Returned to Compliance01-JAN-201131-DEC-2011Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)134306Returned to Compliance01-MAY-200631-MAY-2006Yes
MRMonitoring, RegularNitrate RuleNitrate-Nitrite134307Returned to Compliance01-JAN-200631-DEC-2006No
MRMonitoring, RegularNitrate RuleNitrate-Nitrite134309Returned to Compliance01-JAN-200631-DEC-2006No
MRMonitoring, RegularNitrate RuleNitrate-Nitrite134310Returned to Compliance01-JAN-200631-DEC-2006No
MRMonitoring, RegularNitrate RuleNitrate-Nitrite134308Returned to Compliance01-JAN-200631-DEC-2006No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTTHM125806Returned to Compliance01-JAN-200531-DEC-2005No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTTHM125205Returned to Compliance01-JAN-200431-DEC-2004No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)125305Returned to Compliance01-JAN-200431-DEC-2004No
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule125405Returned to Compliance01-JAN-2004 - No
  • 1 - 50 of 58

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
9999900000000000001134436EFLFederal Final Administrative Order issued06-MAR-2026ODSWeb2E- Failure to complete service line inventory
4013249134437SIAState Violation/Reminder Notice11-JUL-2025State -
4013245134366SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134365SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134364SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134363SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134360SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134359SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134409SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134343SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134410SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134342SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134341SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134340SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134345SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134348SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134349SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134350SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134353SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134354SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134355SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134356SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134357SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013245134358SOXState Compliance achieved08-OCT-2020StateClosed due to system achieving compliance with arsenic, fluoride, and nitrate MCL requirements. This also closes: 20-1, 19-6, 19-5, 19-4, 19-3, 19-2, 19-1, 18-4, 18-3, 18-2, 18-1, 17-3, 17-2, 17-1, 16-3, & 16-2.
4013201134328SOXState Compliance achieved27-OCT-2017State -
4013197134327SIFState Public Notification received09-AUG-2017State -
4013198134329SIFState Public Notification received09-AUG-2017State -
4013198134330SIFState Public Notification received09-AUG-2017State -
4013199134336SIFState Public Notification received09-AUG-2017State -
4013199134335SIFState Public Notification received09-AUG-2017State -
4013192134333SIFState Public Notification received30-JUN-2017State -
4013192134332SIFState Public Notification received30-JUN-2017State -
401317944093SOXState Compliance achieved04-AUG-2016StateAUTOMATIC RETURN TO COMPLIANCE 8/4/2016 - Violations Should be Closed Out because PWS is in complaince.
4013182101897SOXState Compliance achieved04-AUG-2016StateAUTOMATIC RETURN TO COMPLIANCE 8/4/2016 - Violations Should be Closed Out because PWS is in complaince.
4013181124695SOXState Compliance achieved04-AUG-2016StateAUTOMATIC RETURN TO COMPLIANCE 8/4/2016 - Violations Should be Closed Out because PWS is in complaince.
401318035095SOXState Compliance achieved04-AUG-2016StateAUTOMATIC RETURN TO COMPLIANCE 8/4/2016 - Violations Should be Closed Out because PWS is in complaince.
40131833198SOXState Compliance achieved04-AUG-2016StateAUTOMATIC RETURN TO COMPLIANCE 8/4/2016 - Violations Should be Closed Out because PWS is in complaince.
4013184134338SIFState Public Notification received20-APR-2016State -
4013184134337SIFState Public Notification received20-APR-2016State -
4013164134331SFOState Administrative/Compliance Order with penalty issued20-AUG-2014State1Q2014 - 2Q2014 Arsenic MCL
4013167134326SIAState Violation/Reminder Notice30-JUN-2014StateReturn of engineering reports as PWS reevaluates option
4013167134322SIAState Violation/Reminder Notice30-JUN-2014StateReturn of engineering reports as PWS reevaluates option
4013167134323SIAState Violation/Reminder Notice30-JUN-2014StateReturn of engineering reports as PWS reevaluates option
4013167134325SIAState Violation/Reminder Notice30-JUN-2014StateReturn of engineering reports as PWS reevaluates option
4011903124803SOXState Compliance achieved19-JUN-2014StateReturned to compliance
4013143134317SOXState Compliance achieved31-JUL-2012StateClosed out NOV 11-1 and 11-2
4013143134316SOXState Compliance achieved31-JUL-2012StateClosed out NOV 11-1 and 11-2
4013125134308SOXState Compliance achieved22-SEP-2009StateClosed out Nitrate MR
4013125134307SOXState Compliance achieved22-SEP-2009StateClosed out Nitrate MR
4013125134310SOXState Compliance achieved22-SEP-2009StateClosed out Nitrate MR
  • 1 - 50 of 57

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
CC LAWTON MM28435YesConsecutive ConnectionSurface waterEmergencyActive
PETTY12476YesWell Ground waterPermanentInactive
JOHNSON (2)30265YesWell Ground waterPermanentActive
COOK 522376YesWell Ground waterPermanentActive
JOHNSON (1)12475YesWell Ground waterPermanentActive
WITT 2 (EAST)12474YesWell Ground waterPermanentActive
WITT 1 (WEST)12473YesWell Ground waterPermanentActive
COMANCHE CO RWD #424915YesConsecutive ConnectionSurface waterOtherInactive
DISTRIBUTION SYSTEM17698NoDistribution System/Zone - - Active
CAIN BOOSTER STATION30555NoPump Facility - - Active
WEIR BOOSTER STATION30556NoPump Facility - - Active
WITT 119692NoSampling Station - - Active
WITT 220990NoSampling Station - - Active
COOK STANDPIPE30297NoStorage - - Active
WATERS STANDPIPE30551NoStorage - - Active
TEMPLE STANDPIPE30552NoStorage - - Active
NORTH STANDPIPE30553NoStorage - - Active
BASELINE STANDPIPE30554NoStorage - - Active
WEIR STANDPIPE30589NoStorage - - Active
TREATMENT PLANT24378NoTreatment Plant - - Active
BLENDING STATION AND CHEMICAL FEED30264NoTreatment Plant - - Active
CL2 STATION 119375NoTreatment Plant - - Inactive
CL2 STATION 220985NoTreatment Plant - - Inactive
CL2 STATION 320986NoTreatment Plant - - Inactive
CL2 STATION 420987NoTreatment Plant - - Inactive
  • 1 - 25 of 25

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
CL2 STATION 119375Gaseous Chlorination, PostDisinfection
CL2 STATION 220985Hypochlorination, PostDisinfection
CL2 STATION 320986Hypochlorination, PostDisinfection
CL2 STATION 420987Hypochlorination, PostDisinfection
TREATMENT PLANT24378Hypochlorination, PostDisinfection
TREATMENT PLANT24378Hypochlorination, PreDisinfection
TREATMENT PLANT24378InnovativeOther
TREATMENT PLANT24378InnovativeOther
TREATMENT PLANT24378InnovativeOther
TREATMENT PLANT24378InnovativeOther
TREATMENT PLANT24378Rapid MixInorganics removal
TREATMENT PLANT24378pH Adjustment, PreInorganics removal
TREATMENT PLANT24378Activated AluminaInorganics removal
TREATMENT PLANT24378Activated AluminaInorganics removal
TREATMENT PLANT24378Activated AluminaInorganics removal
TREATMENT PLANT24378Activated AluminaInorganics removal
TREATMENT PLANT24378pH Adjustment, PostCorrosion control
TREATMENT PLANT24378InnovativeOther
TREATMENT PLANT24378InnovativeOther
TREATMENT PLANT24378InnovativeOther
TREATMENT PLANT24378InnovativeOther
TREATMENT PLANT24378InnovativeOther
TREATMENT PLANT24378InnovativeOther
TREATMENT PLANT24378Sludge TreatmentInorganics removal
TREATMENT PLANT24378InnovativeOther
TREATMENT PLANT24378Sludge TreatmentInorganics removal
TREATMENT PLANT24378Sludge TreatmentInorganics removal
TREATMENT PLANT24378Sludge TreatmentInorganics removal
TREATMENT PLANT24378Rapid MixInorganics removal
TREATMENT PLANT24378pH AdjustmentCorrosion control
BLENDING STATION AND CHEMICAL FEED30264Hypochlorination, PostDisinfection
BLENDING STATION AND CHEMICAL FEED30264pH AdjustmentCorrosion control
BLENDING STATION AND CHEMICAL FEED30264InnovativeOther
BLENDING STATION AND CHEMICAL FEED30264InnovativeOther
BLENDING STATION AND CHEMICAL FEED30264InnovativeOther
  • 1 - 35 of 35

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.