Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NE3107902
PWS Name	GRAND ISLAND, CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	51478
County Served	Hall

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
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	446260	Known	01-OCT-2025	31-DEC-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	446258	Known	01-JUL-2025	30-SEP-2025	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	446242	Returned to Compliance	01-APR-2010	30-JUN-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	446241	Returned to Compliance	01-APR-2010	30-JUN-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	446240	Returned to Compliance	01-JAN-2008	31-OCT-2010	No
MCL	Maximum Contaminant Level Violation, Average	Volatile Organic Chemicals	1,1-Dichloroethylene	446201	Returned to Compliance	01-JAN-2001	31-DEC-2001	Yes
TT	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Lead and Copper Rule	446198	Returned to Compliance	01-JAN-1998	-	Yes

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
1952213	446258	SIF	State Public Notification received	10-DEC-2025	State	System requested limited direct delivery and submitted hydraulic analysis on 1/14/2026 showing no persons served by the system received water containing uranium mass over the MCL. System was only required to post PN and certify it. Certification received 12/10/2025 AS
1952204	446240	SOX	State Compliance achieved	31-OCT-2011	State	Administrative RTC
1952205	446242	SOX	State Compliance achieved	30-JUN-2011	State	Administrative RTC
1952206	446241	SOX	State Compliance achieved	30-JUN-2011	State	Administrative RTC
1952203	446198	SOX	State Compliance achieved	18-JUN-2003	State	-
1952203	446201	SOX	State Compliance achieved	18-JUN-2003	State	-

1 - 6 of 6

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 771	2685	Yes	Well	Ground water	Other	Inactive
WELL 635 WELLFIELD 7	3229	Yes	Well	Ground water	Permanent	Inactive
WELL 641 WELLFIELD 6	3223	Yes	Well	Ground water	Permanent	Inactive
WELL 711	2956	Yes	Well	Ground water	Permanent	Inactive
WELL 20005 WELL 21	8540	Yes	Well	Ground water	Permanent	Active
WELL 20004 WELL 20	8539	Yes	Well	Ground water	Permanent	Active
WELL 20003 WELL 19	8538	Yes	Well	Ground water	Permanent	Active
WELL 20002 WELL 18	8537	Yes	Well	Ground water	Permanent	Active
WELL 20001 WELL 17	8536	Yes	Well	Ground water	Permanent	Active
WELL 636 WELLFIELD 8	6101	Yes	Well	Ground water	Permanent	Active
WELL 381 LOCUST WELL	3679	Yes	Well	Ground water	Permanent	Active
WELL 421 PARKVIEW 1	3647	Yes	Well	Ground water	Permanent	Active
WELL 481 PARKVIEW 2	3577	Yes	Well	Ground water	Permanent	Active
WELL 621 WELLFIELD 1	3274	Yes	Well	Ground water	Permanent	Active
WELL 631 WELLFIELD 2	3257	Yes	Well	Ground water	Permanent	Active
WELL 632 WELLFIELD 3	3238	Yes	Well	Ground water	Permanent	Active
WELL 637 WELLFIELD 9	3230	Yes	Well	Ground water	Permanent	Active
WELL 634 WELLFIELD 5	3228	Yes	Well	Ground water	Permanent	Active
WELL 633 WELLFIELD 4	3226	Yes	Well	Ground water	Permanent	Active
WELL 661 WELLFIELD 10	3157	Yes	Well	Ground water	Permanent	Active
WELL 662 WELLFIELD 11	3140	Yes	Well	Ground water	Permanent	Active
WELL 663 WELLFIELD 12	3112	Yes	Well	Ground water	Permanent	Active
WELL 751 STOLLEY PARK	2774	Yes	Well	Ground water	Permanent	Active
WELL 841 REED	2442	Yes	Well	Ground water	Permanent	Active
WELL 911 WELLFIELD 13	2104	Yes	Well	Ground water	Permanent	Active
WELL 914 WELLFIELD 16	2069	Yes	Well	Ground water	Permanent	Active
WELL 913 WELLFIELD 15	2066	Yes	Well	Ground water	Permanent	Active
WELL 912 WELLFIELD 14	2061	Yes	Well	Ground water	Permanent	Active
WELL 20052 WELL #7	11697	Yes	Well	Ground water	Permanent	Active
WELL 20051 WELL #6	11696	Yes	Well	Ground water	Permanent	Active
WELL 371	3689	Yes	Well	Ground water	Other	Inactive
WELL 551	3451	Yes	Well	Ground water	Other	Inactive
WELL 562	3399	Yes	Well	Ground water	Other	Inactive
WELL 701	3010	Yes	Well	Ground water	Other	Inactive
DISTRIBUTION SYSTEM	1738	No	Distribution System/Zone	-	-	Active
BURDICK HP STATION	10507	No	Pump Facility	-	-	Active
PINE ST. HP STATION	10509	No	Pump Facility	-	-	Active
ROGERS HP STATION	10511	No	Pump Facility	-	-	Active
WEST PARK PLAZA HP STATION	10513	No	Pump Facility	-	-	Active
WELL FIELD PUMP STATION	10515	No	Pump Facility	-	-	Active
POE 013	10178	No	Sampling Station	-	-	Inactive
POE 014	10180	No	Sampling Station	-	-	Inactive
POE 011	5668	No	Sampling Station	-	-	Inactive
POE 012	6169	No	Sampling Station	-	-	Inactive
KIMBELL RESERVOIR	10497	No	Storage	-	-	Active
BURDICK RESERVOIR	10499	No	Storage	-	-	Active
ROGERS RESERVOIR	10501	No	Storage	-	-	Active
ELEVATED WATER STORAGE TANK	15342	No	Storage	-	-	Active
TREATMENT PLANT 016	13086	No	Treatment Plant	-	-	Active
TREATMENT PLANT 015	13087	No	Treatment Plant	-	-	Active

1 - 50 of 60

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT 016	13086	Gaseous Chlorination, Post	Disinfection
TREATMENT PLANT 015	13087	Gaseous Chlorination, Post	Disinfection
TREATMENT PLANT 017	13088	Gaseous Chlorination, Post	Disinfection
URANIUM REMOVAL PLANT FOR WELLS 6,7,8	14089	Ion Exchange	Inorganics removal
421 TREATMENT	6029	Gaseous Chlorination, Post	Disinfection
751 TREATMENT	6031	Gaseous Chlorination, Post	Disinfection
481 TREATMENT	6032	Gaseous Chlorination, Post	Disinfection
381 TREATMENT	6034	Gaseous Chlorination, Post	Disinfection
841 TREATMENT	6035	Gaseous Chlorination, Post	Disinfection

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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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