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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCT1480011
PWS NameWALLINGFORD WATER DEPARTMENT
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water
Primacy TypeState
Is Wholesaler?No
Population Served37267
County ServedNew Haven

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
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule8936095Returned to Compliance01-JUL-2024 - No
MRMonitoring, RegularVolatile Organic ChemicalsEthylbenzene8936089Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic ChemicalsToluene8936088Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic ChemicalsBenzene8936087Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic ChemicalsCHLOROBENZENE8936086Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic ChemicalsTetrachloroethylene8936084Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic Chemicals1,1,2-Trichloroethane8936082Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic ChemicalsTrichloroethylene8936081Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic Chemicals1,2-Dichloropropane8936080Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic ChemicalsCarbon tetrachloride8936079Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic Chemicals1,1,1-Trichloroethane8936078Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic Chemicals1,2-Dichloroethane8936077Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic Chemicalstrans-1,2-Dichloroethylene8936076Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic Chemicals1,1-Dichloroethylene8936074Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic ChemicalsVinyl chloride8936073Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic Chemicalsp-Dichlorobenzene8936072Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic Chemicalso-Dichlorobenzene8936071Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic ChemicalsDICHLOROMETHANE8936067Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic Chemicalscis-1,2-Dichloroethylene8936052Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic Chemicals1,2,4-Trichlorobenzene8936051Returned to Compliance01-APR-202430-JUN-2024No
MRMonitoring, RegularVolatile Organic ChemicalsStyrene8936092Returned to Compliance01-APR-202430-JUN-2024No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule8936045Returned to Compliance01-JUL-2023 - No
MRMonitoring, RegularSynthetic Organic ChemicalsETHYLENE DIBROMIDE8936043Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsEndrin8936004Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic Chemicals1,2-DIBROMO-3-CHLOROPROPANE8936042Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsChlordane8936044Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsPentachlorophenol8936037Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsBenzo(a)pyrene8936036Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsHEXACHLOROBENZENE8936035Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic Chemicals2,4,5-TP8936034Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic Chemicals2,4-D8936033Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsTotal Polychlorinated Biphenyls (PCB)8936039Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsHeptachlor epoxide8936029Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsHeptachlor8936027Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsLASSO8936026Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsAtrazine8936025Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsAldicarb8936024Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsCarbofuran8936023Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsAldicarb sulfone8936021Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsAldicarb sulfoxide8936020Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsHexachlorocyclopentadiene8936019Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsDinoseb8936018Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsPicloram8936017Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsBHC-GAMMA8936005Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsMethoxychlor8936006Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsToxaphene8936007Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsDalapon8936010Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsDiquat8936011Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsGlyphosate8936012Known01-JAN-201731-DEC-2019No
MRMonitoring, RegularSynthetic Organic ChemicalsDi(2-ethylhexyl) adipate8936013Known01-JAN-201731-DEC-2019No
  • 1 - 50 of 94

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
1305948936092SIFState Public Notification received17-JUL-2025State -
1305948936051SIFState Public Notification received17-JUL-2025State -
1305948936088SIFState Public Notification received17-JUL-2025State -
1305948936087SIFState Public Notification received17-JUL-2025State -
1305948936086SIFState Public Notification received17-JUL-2025State -
1305948936084SIFState Public Notification received17-JUL-2025State -
1305948936082SIFState Public Notification received17-JUL-2025State -
1305948936081SIFState Public Notification received17-JUL-2025State -
1305948936080SIFState Public Notification received17-JUL-2025State -
1305948936079SIFState Public Notification received17-JUL-2025State -
1305948936078SIFState Public Notification received17-JUL-2025State -
1305948936077SIFState Public Notification received17-JUL-2025State -
1305948936076SIFState Public Notification received17-JUL-2025State -
1305948936074SIFState Public Notification received17-JUL-2025State -
1305948936073SIFState Public Notification received17-JUL-2025State -
1305948936072SIFState Public Notification received17-JUL-2025State -
1305948936071SIFState Public Notification received17-JUL-2025State -
1305948936067SIFState Public Notification received17-JUL-2025State -
1305948936052SIFState Public Notification received17-JUL-2025State -
1305948936089SIFState Public Notification received17-JUL-2025State -
1305928936095SIAState Violation/Reminder Notice27-AUG-2024State -
1305878936045SOXState Compliance achieved10-JUL-2023State -
1305858935952SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935949SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935948SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935947SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935946SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935944SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935942SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935941SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935940SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935939SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935938SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935937SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935936SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935934SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935933SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935932SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935931SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935927SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935911SIAState Violation/Reminder Notice09-SEP-2010State -
1305858935912SIAState Violation/Reminder Notice09-SEP-2010State -
1303048926704SOXState Compliance achieved28-MAY-2004State -
1303048926804SOXState Compliance achieved28-MAY-2004State -
1303048928304SOXState Compliance achieved28-MAY-2004State -
1303048928704SOXState Compliance achieved28-MAY-2004State -
1303048928804SOXState Compliance achieved28-MAY-2004State -
1303048928904SOXState Compliance achieved28-MAY-2004State -
1303048929004SOXState Compliance achieved28-MAY-2004State -
1303048929204SOXState Compliance achieved28-MAY-2004State -
  • 1 - 50 of 63

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
INTERCONNECTION - CT0930011 - RWA61316YesConsecutive ConnectionSurface waterEmergencyActive
WELL #127827YesWell Ground waterPermanentActive
OAK STREET WELL #327826YesWell Ground waterPermanentActive
OAK STREET WELL #227825YesWell Ground waterPermanentActive
PISTAPAUG POND32688YesReservoirSurface waterPermanentActive
LANES POND32687YesReservoirSurface waterPermanentActive
ULBRICH RESERVOIR32686YesReservoirSurface waterPermanentActive
MACKENZIE RESERVOIR32685YesReservoirSurface waterPermanentActive
PISTAPAUG POND24189YesIntakeSurface waterPermanentActive
DISTRIBUTION SYSTEM24190NoDistribution System/Zone - - Active
ULBRICH RAW WATER PUMP STATION54827NoPump Facility - - Active
MACKENZIE RAW WATER PUMP STATION54829NoPump Facility - - Active
SUNRISE CIRCLE PUMP STATION54831NoPump Facility - - Active
CHESHIRE ROAD PUMP STATION54835NoPump Facility - - Active
PARKER FARMS PUMP STATION54843NoPump Facility - - Active
BARNES PUMP STATION54845NoPump Facility - - Active
PISTAPAUG POND RAW WATER PUMP STATION54853NoPump Facility - - Active
BARNES BOOSTER STATION62040NoPump Facility - - Active
PISTAPAUG POND WTP ENTRY POINT37951NoSampling Station - - Active
OAK STREET WELLS #2 & #3 ENTRY POINT45919NoSampling Station - - Active
RIDGELAND WELLFIELD - WELL#1 ENTRY POINT45920NoSampling Station - - Active
OAK STR W #2 FINISHED (AIR STRIP. TOWER)45923NoSampling Station - - Active
OAK STR W #3 FINISHED (GREENSAND)48247NoSampling Station - - Active
BARNES CHLORINATION ST ENTRY POINT48290NoSampling Station - - Active
HILLHOUSE STORAGE TANK54833NoStorage - - Active
MASONIC GROUND STORAGE TANK54837NoStorage - - Active
MASONIC STORAGE TANK54839NoStorage - - Active
WESTSIDE STORAGE TANK54841NoStorage - - Active
BARNES STORAGE TANK54847NoStorage - - Active
CARPENTER STORAGE TANK54849NoStorage - - Active
PISTAPAUG POND STORAGE TANK54855NoStorage - - Active
PISTAPAUG IN PLANT CLEARWELL62865NoStorage - - Active
OAK STREET CLEARWELL62866NoStorage - - Active
PISTAPAUG WATER TREATMENT PLANT36562NoTreatment Plant - - Active
OAK STREET TREATMENT STATION36563NoTreatment Plant - - Active
RIDGELAND TREATMENT STATION - WELL #136564NoTreatment Plant - - Active
BARNES CHLORINATION STATION36565NoTreatment Plant - - Active
  • 1 - 37 of 37

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
PISTAPAUG WATER TREATMENT PLANT36562Hypochlorination, PreDisinfection
PISTAPAUG WATER TREATMENT PLANT36562Ozonation, PreDisinfection
PISTAPAUG WATER TREATMENT PLANT36562pH Adjustment, PreParticulate removal
PISTAPAUG WATER TREATMENT PLANT36562Rapid MixParticulate removal
PISTAPAUG WATER TREATMENT PLANT36562Activated Carbon, PowderedTaste / odor control
PISTAPAUG WATER TREATMENT PLANT36562SedimentationParticulate removal
PISTAPAUG WATER TREATMENT PLANT36562Filtration, Rapid SandParticulate removal
PISTAPAUG WATER TREATMENT PLANT36562Inhibitor, OrthophosphateCorrosion control
PISTAPAUG WATER TREATMENT PLANT36562pH Adjustment, PostCorrosion control
PISTAPAUG WATER TREATMENT PLANT36562Hypochlorination, PostDisinfection
PISTAPAUG WATER TREATMENT PLANT36562FluoridationOther
PISTAPAUG WATER TREATMENT PLANT36562CoagulationParticulate removal
PISTAPAUG WATER TREATMENT PLANT36562FlocculationParticulate removal
OAK STREET TREATMENT STATION36563Aeration, Packed TowerOrganics removal
OAK STREET TREATMENT STATION36563Hypochlorination, PreIron removal
OAK STREET TREATMENT STATION36563PermanganateIron removal
OAK STREET TREATMENT STATION36563Hypochlorination, PreManganese removal
OAK STREET TREATMENT STATION36563Filtration, GreensandIron removal
OAK STREET TREATMENT STATION36563Filtration, GreensandManganese removal
OAK STREET TREATMENT STATION36563pH AdjustmentCorrosion control
OAK STREET TREATMENT STATION36563Hypochlorination, PreDisinfection
OAK STREET TREATMENT STATION36563Inhibitor, OrthophosphateCorrosion control
OAK STREET TREATMENT STATION36563Hypochlorination, PostDisinfection
OAK STREET TREATMENT STATION36563pH Adjustment, PostCorrosion control
OAK STREET TREATMENT STATION36563FluoridationOther
RIDGELAND TREATMENT STATION - WELL #136564Inhibitor, OrthophosphateCorrosion control
RIDGELAND TREATMENT STATION - WELL #136564Hypochlorination, PostDisinfection
RIDGELAND TREATMENT STATION - WELL #136564FluoridationOther
BARNES CHLORINATION STATION36565Hypochlorination, PostDisinfection
  • 1 - 29 of 29
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.