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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDIA7930008
PWS NameGRINNELL WATER DEPARTMENT
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served9564
County ServedPoweshiek

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, AverageRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)263725Known01-APR-202530-JUN-2025Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleGross Alpha, Excl. Radon and U152525Known01-JAN-202531-MAR-2025Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)223225Known01-JAN-202531-MAR-2025Yes
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice149125Returned to Compliance17-DEC-2024 - No
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleGross Alpha, Excl. Radon and U248525Known01-OCT-202431-DEC-2024Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)152125Known01-OCT-202431-DEC-2024Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleGross Alpha, Excl. Radon and U248425Known01-JUL-202430-SEP-2024Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)152025Known01-JUL-202430-SEP-2024Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleGross Alpha, Excl. Radon and U248325Known01-APR-202430-JUN-2024Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)151925Known01-APR-202430-JUN-2024Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)115424Known01-JAN-202431-MAR-2024Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleGross Alpha, Excl. Radon and U247825Known01-JAN-202431-MAR-2024Yes
MRMonitoring, RegularRadionuclides and Revised Rad RuleGross Alpha, Excl. Radon and U45724Returned to Compliance01-JUL-202330-SEP-2023No
MRMonitoring, RegularRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)45624Returned to Compliance01-JUL-202330-SEP-2023No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)40004Returned to Compliance01-OCT-200331-OCT-2003Yes
MRMonitoring, Routine Minor (TCR)Total Coliform RuleColiform (TCR)41993Returned to Compliance01-DEC-199231-DEC-1992No
MRMonitoring, Repeat Major (TCR)Total Coliform RuleColiform (TCR)411691Returned to Compliance01-JUN-199130-JUN-1991No
MRMonitoring, RegularRadionuclides and Revised Rad RuleGross Alpha, Excl. Radon and U79393Returned to Compliance01-APR-198931-MAR-1993No
  • 1 - 18 of 18

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
40435645624SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
404347248525SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
404346248425SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
404344248325SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
404341247825SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
404352223225SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
40435545724SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
404353115424SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
404349151925SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
404350152025SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
404351152125SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
404340152525SFLState Administrative/Compliance Order without penalty issued01-AUG-2025State -
404357263725SIFState Public Notification received30-JUL-2025State -
404362149125SFJState Formal Notice of Violation issued25-JUN-2025State -
40430440004SOXState Compliance achieved06-MAY-2004State -
288391411691SOXState Compliance achieved10-OCT-1995State -
40369379393SOXState Compliance achieved10-OCT-1995State -
17269341993SOXState Compliance achieved10-OCT-1995State -
  • 1 - 18 of 18

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL #8 (1974)11823YesWell Ground waterPermanentActive
WELL #6 (1926)9978YesWell Ground waterPermanentActive
WELL #9 (2001)27195YesWell Ground waterPermanentActive
WELL #7 (1955)13090YesWell Ground waterPermanentActive
WELL #5 (1920)11894YesWell Ground waterPermanentActive
DISTRIBUTION SYSTEM3609NoDistribution System/Zone - - Active
GENERAL PWS FACILITY25275NoOther - - Active
CC TO GRINNELL MHP, IA793060135819NoOther - - Active
CC TO POWESHIEK WATER ASSOC IA867070129671NoOther - - Inactive
IN-PLANT PUMP STATION35374NoPump Facility - - Active
WLS 5-9 @ PLT AFTER TREATMENT4573NoSampling Station - - Active
ELEVATED STORAGE-0.3MG26832NoStorage - - Active
TREATMENT PLANT #118463NoTreatment Plant - - Active
  • 1 - 13 of 13

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TREATMENT PLANT #118463InnovativeDisinfection
TREATMENT PLANT #118463InnovativeDisinfection
TREATMENT PLANT #118463InnovativeTaste / odor control
TREATMENT PLANT #118463InnovativeTaste / odor control
TREATMENT PLANT #118463InnovativeCorrosion control
TREATMENT PLANT #118463InnovativeCorrosion control
  • 1 - 6 of 6
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.