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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDTX1080067
PWS NameMILITARY HWY WSC LAS RUSIAS
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water purchased
Primacy TypeState
Is Wholesaler?Yes
Population Served17943
County ServedHidalgo

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
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM962Known01-OCT-202531-DEC-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM955Known01-JUL-202530-SEP-2025Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic915Returned to Compliance01-APR-202230-JUN-2022Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic912Returned to Compliance01-JAN-202231-MAR-2022Yes
MRLead Consumer NoticeLead and Copper RuleLead and Copper Rule909Returned to Compliance30-DEC-2021 - No
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic908Returned to Compliance01-OCT-202131-DEC-2021Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic906Returned to Compliance01-JUL-202130-SEP-2021Yes
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice905Returned to Compliance16-MAY-2020 - No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice892Open04-APR-2019 - No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM899Returned to Compliance01-APR-201930-JUN-2019Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)891Returned to Compliance01-JAN-201931-MAR-2019Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM888Returned to Compliance01-JAN-201931-MAR-2019Yes
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice872Returned to Compliance28-DEC-2018 - No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice871Returned to Compliance28-DEC-2018 - No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)858Returned to Compliance01-OCT-201831-DEC-2018Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM859Returned to Compliance01-OCT-201831-DEC-2018Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)851Returned to Compliance01-JUL-201830-SEP-2018Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM850Returned to Compliance01-JUL-201830-SEP-2018Yes
MRWater Quality Parameter M/RLead and Copper RuleLead and Copper Rule880Known01-JUL-201831-DEC-2018No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM840Returned to Compliance01-APR-201830-JUN-2018Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)841Returned to Compliance01-APR-201830-JUN-2018Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM842Returned to Compliance01-APR-201830-JUN-2018Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM831Known01-OCT-201731-DEC-2017Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM828Known01-JUL-201730-SEP-2017Yes
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice820Returned to Compliance23-JUN-2017 - No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM817Known01-APR-201730-JUN-2017Yes
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice804Returned to Compliance15-MAR-2017 - No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice803Returned to Compliance15-MAR-2017 - No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM799Known01-JAN-201731-MAR-2017Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic802Returned to Compliance01-JAN-201731-MAR-2017Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM779Known01-OCT-201631-DEC-2016Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM775Returned to Compliance01-OCT-201631-DEC-2016Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic780Returned to Compliance01-OCT-201631-DEC-2016Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM776Known01-OCT-201631-DEC-2016Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic774Returned to Compliance01-JUL-201630-SEP-2016Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM771Known01-JUL-201630-SEP-2016Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic767Returned to Compliance01-APR-201630-JUN-2016Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic763Returned to Compliance01-JAN-201631-MAR-2016Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic751Returned to Compliance01-JUL-201530-SEP-2015Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic749Returned to Compliance01-APR-201530-JUN-2015Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM746Returned to Compliance01-JAN-201531-MAR-2015Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic747Returned to Compliance01-JAN-201531-MAR-2015Yes
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice744Returned to Compliance31-MAY-2014 - No
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule743Returned to Compliance01-APR-201430-APR-2014Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule742Returned to Compliance01-MAR-201431-MAR-2014Yes
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice741Returned to Compliance09-FEB-2014 - No
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule740Returned to Compliance01-NOV-201330-NOV-2013Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule739Returned to Compliance01-OCT-201331-OCT-2013Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule736Returned to Compliance01-SEP-201330-SEP-2013Yes
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice738Returned to Compliance01-SEP-2013 - No
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Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
1982955SIEState Public Notification requested11-DEC-2025State -
1974912SOXState Compliance achieved23-JUN-2023State20230623; ISHARP; FOUR VIOLATIONS RTC BASED ON RAA FOR 3Q2022-2Q2023 BELOW MCL.
1974915SOXState Compliance achieved23-JUN-2023State20230623; ISHARP; FOUR VIOLATIONS RTC BASED ON RAA FOR 3Q2022-2Q2023 BELOW MCL.
1974906SOXState Compliance achieved23-JUN-2023State20230623; ISHARP; FOUR VIOLATIONS RTC BASED ON RAA FOR 3Q2022-2Q2023 BELOW MCL.
1974908SOXState Compliance achieved23-JUN-2023State20230623; ISHARP; FOUR VIOLATIONS RTC BASED ON RAA FOR 3Q2022-2Q2023 BELOW MCL.
1962909SOXState Compliance achieved04-FEB-2022StateADEQUATE 2021 LCN RECEIVED ON 01/05/22 – KC
1957880SIFState Public Notification received21-DEC-2021State -
1956905SOXState Compliance achieved17-AUG-2020State -
1949851SFOState Administrative/Compliance Order with penalty issued21-JAN-2020StateTCEQ DOCKET NO. 2019-0128-PWS-E. FILE CLOSED 1/29/2020.
1949841SFOState Administrative/Compliance Order with penalty issued21-JAN-2020StateTCEQ DOCKET NO. 2019-0128-PWS-E. FILE CLOSED 1/29/2020.
1949858SFOState Administrative/Compliance Order with penalty issued21-JAN-2020StateTCEQ DOCKET NO. 2019-0128-PWS-E. FILE CLOSED 1/29/2020.
1949891SFOState Administrative/Compliance Order with penalty issued21-JAN-2020StateTCEQ DOCKET NO. 2019-0128-PWS-E. FILE CLOSED 1/29/2020.
1946842SOXState Compliance achieved21-AUG-2019State09/20/2019 SOX'D VIOLATIONS BASED ON 3Q2019 TTHM DBP2-01 LRAA AND DBP2-03 LRAA,
1946859SOXState Compliance achieved21-AUG-2019State09/20/2019 SOX'D VIOLATIONS BASED ON 3Q2019 TTHM DBP2-01 LRAA AND DBP2-03 LRAA,
1946850SOXState Compliance achieved21-AUG-2019State09/20/2019 SOX'D VIOLATIONS BASED ON 3Q2019 TTHM DBP2-01 LRAA AND DBP2-03 LRAA,
1946888SOXState Compliance achieved21-AUG-2019State09/20/2019 SOX'D VIOLATIONS BASED ON 3Q2019 TTHM DBP2-01 LRAA AND DBP2-03 LRAA,
1946899SOXState Compliance achieved21-AUG-2019State09/20/2019 SOX'D VIOLATIONS BASED ON 3Q2019 TTHM DBP2-01 LRAA AND DBP2-03 LRAA,
1941840SOXState Compliance achieved05-JUN-2019State06/27/19;SOX'D VIOLATIONS BASED ON 2Q2019 TTHM DBP2-04 AND HAA5 DBP2-01 LRAA
1927871SOXState Compliance achieved03-JUN-2019State -
1922892SIAState Violation/Reminder Notice30-APR-2019State -
1912872SOXState Compliance achieved22-FEB-2019State -
1878802SOXState Compliance achieved06-APR-2018State -
1879780SOXState Compliance achieved06-APR-2018State -
1879774SOXState Compliance achieved06-APR-2018State -
1879767SOXState Compliance achieved06-APR-2018State -
1879763SOXState Compliance achieved06-APR-2018State -
1879751SOXState Compliance achieved06-APR-2018State -
1879747SOXState Compliance achieved06-APR-2018State -
1879749SOXState Compliance achieved06-APR-2018State -
1877799SFOState Administrative/Compliance Order with penalty issued12-MAR-2018StateDOCKET NO 2017-0845-PWS-E; FILE CLOSED 1/31/2020.
1877771SFOState Administrative/Compliance Order with penalty issued12-MAR-2018StateDOCKET NO 2017-0845-PWS-E; FILE CLOSED 1/31/2020.
1877775SFOState Administrative/Compliance Order with penalty issued12-MAR-2018StateDOCKET NO 2017-0845-PWS-E; FILE CLOSED 1/31/2020.
1877831SFOState Administrative/Compliance Order with penalty issued12-MAR-2018StateDOCKET NO 2017-0845-PWS-E; FILE CLOSED 1/31/2020.
1877828SFOState Administrative/Compliance Order with penalty issued12-MAR-2018StateDOCKET NO 2017-0845-PWS-E; FILE CLOSED 1/31/2020.
1877817SFOState Administrative/Compliance Order with penalty issued12-MAR-2018StateDOCKET NO 2017-0845-PWS-E; FILE CLOSED 1/31/2020.
1877779SFOState Administrative/Compliance Order with penalty issued12-MAR-2018StateDOCKET NO 2017-0845-PWS-E; FILE CLOSED 1/31/2020.
1877776SFOState Administrative/Compliance Order with penalty issued12-MAR-2018StateDOCKET NO 2017-0845-PWS-E; FILE CLOSED 1/31/2020.
1850820SOXState Compliance achieved07-JUL-2017State -
1840803SOXState Compliance achieved13-APR-2017State -
1838804SOXState Compliance achieved13-APR-2017State -
1821789SFJState Formal Notice of Violation issued24-FEB-2017StateDMFR ON 5/12/2017; ADDED 1Q2017 TTHM MCL's
1779743SIFState Public Notification received05-SEP-2015State -
1772746SOXState Compliance achieved01-JUN-2015State06/01/15; SYSTEM DID NOT ACCRUE A DBP2 VIOLATION FOR 2Q2015, ALL PAST VIOLATIONS CAN BE SOXED
1769744SOXState Compliance achieved18-MAY-2015State -
1777742SIFState Public Notification received05-SEP-2014State -
1762739SFOState Administrative/Compliance Order with penalty issued05-JUL-2014StateDOCKET NO 2013-2100-PWS-E; FINAL TR DUE DATE 08/19/2014; FILE CLOSED 10/21/2014
1762740SFOState Administrative/Compliance Order with penalty issued05-JUL-2014StateDOCKET NO 2013-2100-PWS-E; FINAL TR DUE DATE 08/19/2014; FILE CLOSED 10/21/2014
1762741SFOState Administrative/Compliance Order with penalty issued05-JUL-2014StateDOCKET NO 2013-2100-PWS-E; FINAL TR DUE DATE 08/19/2014; FILE CLOSED 10/21/2014
1762738SFOState Administrative/Compliance Order with penalty issued05-JUL-2014StateDOCKET NO 2013-2100-PWS-E; FINAL TR DUE DATE 08/19/2014; FILE CLOSED 10/21/2014
1762737SFOState Administrative/Compliance Order with penalty issued05-JUL-2014StateDOCKET NO 2013-2100-PWS-E; FINAL TR DUE DATE 08/19/2014; FILE CLOSED 10/21/2014
  • 1 - 50 of 67

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
SW I/C FROM BROWNSVILLE P U B143717YesConsecutive ConnectionSurface waterOtherInactive
4 - PLUGGED18036YesWell Ground waterPermanentInactive
F-568060YesWell Ground waterPermanentActive
F-468059YesWell Ground waterPermanentActive
F-4 TEST HOLE63817YesWell Ground waterPermanentActive
F-5 TEST HOLE63816YesWell Ground waterPermanentActive
5 (AKA R1)18054YesWell Ground waterPermanentActive
F-1 (GUI)18056YesWell Ground water under the influence of surface waterPermanentActive
F-2 (GUI)18042YesWell Ground water under the influence of surface waterPermanentActive
F-3 (GUI)18041YesWell Ground water under the influence of surface waterPermanentActive
RESACA DEL MONTE 3 - JOINES RD (GUI)119506YesWell Ground water under the influence of surface waterPermanentActive
RESACA DEL MONTE 2 - JOINES RD (GUI)119505YesWell Ground water under the influence of surface waterPermanentActive
JOINES RD 1 (GUI)119504YesWell Ground water under the influence of surface waterPermanentActive
H-118648YesWell Ground waterOtherInactive
P-118048YesWell Ground waterOtherInactive
P-218047YesWell Ground waterOtherInactive
H-318046YesWell Ground waterOtherInactive
P-418040YesWell Ground waterOtherInactive
P-318038YesWell Ground waterOtherInactive
H-217960YesWell Ground waterOtherInactive
F-6 TEST HOLE63815YesWell Ground waterEmergencyActive
SW FROM CITY OF HARLINGEN35401YesConsecutive ConnectionSurface waterPermanentActive
RAW-TAP117566NoCommon Headers - - Active
RAW-TAP157758NoCommon Headers - - Active
DISTRIBUTION SYSTEM42443NoDistribution System/Zone - - Active
LAS RUSIAS WTP - 1000 GPM - SP72572NoPump Facility - - Active
LAS RUSIAS WTP - 1000 GPM - SP72573NoPump Facility - - Active
LAS RUSIAS WTP - 1000 GPM - SP72574NoPump Facility - - Active
LAS RUSIAS WTP - 1000 GPM - SP72575NoPump Facility - - Active
LAS RUSIAS WTP - 1000 GPM - SP72576NoPump Facility - - Active
JOINES WTP - 1300 GPM - SP72577NoPump Facility - - Active
JOINES WTP - 1300 GPM - SP72578NoPump Facility - - Active
23494 JOINES RD, SAN BENITO119653NoSampling Station - - Active
LAS RUSIAS WTP / FM 1479137061NoSampling Station - - Active
23494 JOINES RD; SAN BENITO137062NoSampling Station - - Active
4450 US 281, BROWNSVILLE143718NoSampling Station - - Active
4450 US 281, BROWNSVILLE143719NoSampling Station - - Active
RANGERVILLE RD / FM 800171196NoSampling Station - - Active
LAS RUSIAS WTP / FM 147954206NoSampling Station - - Active
RANGERVILLE RD / FM 80054207NoSampling Station - - Active
TRANSFERRED TO TX108023454205NoSampling Station - - Inactive
TRANSFERRED TO TX108023461239NoSampling Station - - Inactive
FM 1421 - 0.2 MG EL132058NoStorage - - Active
FM 800 - 0.150 MG - EL145309NoStorage - - Active
SAN PEDRO - 0.100 MG - EL89586NoStorage - - Active
JOINES RD NORTH - 0.5 MG - GR89587NoStorage - - Active
LA PALOMA - 0.100 MG - EL89588NoStorage - - Active
JOINES RD SOUTH - 0.5 MG - GR89589NoStorage - - Active
RANGERVILLE RD - 0.100 MG - EL89590NoStorage - - Active
RANGERVILLE BSTR - 1.0 MG - GR89591NoStorage - - Active
  • 1 - 50 of 59

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
GUITP - JOINES RD INTEGRATED MEMBRANE PL119651Filtration, Rapid SandParticulate removal
GUITP - JOINES RD INTEGRATED MEMBRANE PL119651PermanganateManganese removal
GUITP - JOINES RD INTEGRATED MEMBRANE PL119651Gaseous Chlorination, PreDisinfection
GUITP - JOINES RD INTEGRATED MEMBRANE PL119651Filtration, UltrafiltrationParticulate removal
PLANT12175Hypochlorination, PreDisinfection
GUITP - LAS RUSIAS MEMBRANE PLANT127930Hypochlorination, PreDisinfection
GUITP - LAS RUSIAS MEMBRANE PLANT127930Filtration, Rapid SandParticulate removal
GUITP - LAS RUSIAS MEMBRANE PLANT127930Reducing Agent, Sodium BisulfateDe-chlorination
GUITP - LAS RUSIAS MEMBRANE PLANT127930Gaseous Chlorination, PreDisinfection
GUITP - LAS RUSIAS MEMBRANE PLANT127930PermanganateIron removal
GUITP - LAS RUSIAS MEMBRANE PLANT127930Ion ExchangeInorganics removal
GUITP - LAS RUSIAS MEMBRANE PLANT127930PermanganateManganese removal
GUITP - LAS RUSIAS MEMBRANE PLANT127930Ion ExchangeInorganics removal
GUITP - LAS RUSIAS MEMBRANE PLANT127930Reverse OsmosisOrganics removal
GUITP - LAS RUSIAS MEMBRANE PLANT127930Reverse OsmosisParticulate removal
GUITP - LAS RUSIAS MEMBRANE PLANT127930InnovativeDisinfection
GUITP - LAS RUSIAS MEMBRANE PLANT127930Gaseous Chlorination, PostDisinfection
CONVENTIONAL GUITP - LAS RUSIAS45974-Log Treatment of VirusesDisinfection
CONVENTIONAL GUITP - LAS RUSIAS4597Gaseous Chlorination, PreDisinfection
CONVENTIONAL GUITP - LAS RUSIAS4597CoagulationParticulate removal
CONVENTIONAL GUITP - LAS RUSIAS4597Rapid MixParticulate removal
CONVENTIONAL GUITP - LAS RUSIAS4597FlocculationParticulate removal
CONVENTIONAL GUITP - LAS RUSIAS4597SedimentationParticulate removal
CONVENTIONAL GUITP - LAS RUSIAS4597Filtration, Rapid SandParticulate removal
CONVENTIONAL GUITP - LAS RUSIAS4597Gaseous Chlorination, PostDisinfection
PLANT - RANGERVILLE BOOSTER9447Gaseous Chlorination, PostDisinfection
  • 1 - 26 of 26

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.