Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	TX0910003
PWS Name	CITY OF DENISON
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	Yes
Population Served	27500
County Served	Grayson

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
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1063	Returned to Compliance	01-AUG-2023	31-AUG-2023	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1062	Returned to Compliance	19-FEB-2021	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	1058	Known	01-OCT-2019	31-DEC-2019	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1056	Returned to Compliance	01-OCT-2018	31-OCT-2018	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1054	Returned to Compliance	08-FEB-2016	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	1052	Returned to Compliance	30-DEC-2015	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	1050	Returned to Compliance	01-OCT-2015	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1034	Returned to Compliance	01-SEP-2014	30-SEP-2014	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1029	Returned to Compliance	26-JUN-2013	-	No
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1028	Returned to Compliance	01-MAY-2013	31-MAY-2013	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1026	Returned to Compliance	10-APR-2013	-	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	1025	Returned to Compliance	16-OCT-2012	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1024	Returned to Compliance	11-MAR-2012	-	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	1022	Returned to Compliance	01-NOV-2011	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1013	Returned to Compliance	01-SEP-2009	30-SEP-2009	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1008	Returned to Compliance	01-AUG-2008	31-AUG-2008	Yes
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	105	Returned to Compliance	01-MAR-2005	31-MAR-2005	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	194	Known	01-SEP-1993	30-SEP-1993	No
Other	Notification, Public	Miscellaneous Other Rules	-	394	Known	01-SEP-1993	30-SEP-1993	No
Other	Notification, Public	Miscellaneous Other Rules	-	494	Known	01-JUL-1993	31-JUL-1993	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	294	Known	01-JUL-1993	31-JUL-1993	No

1 - 21 of 21

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
1279	1063	SIF	State Public Notification received	28-JUN-2024	State	-
1274	1054	SOX	State Compliance achieved	21-SEP-2023	State	-
1275	1050	SIF	State Public Notification received	21-SEP-2023	State	-
1273	1058	SIF	State Public Notification received	27-APR-2021	State	-
1272	1062	SOX	State Compliance achieved	27-APR-2021	State	-
1266	1056	SIF	State Public Notification received	02-JUL-2019	State	-
1262	1022	SO0	State no longer subject to Rule	24-OCT-2018	State	-
1259	1025	SIF	State Public Notification received	03-NOV-2016	State	-
1258	1026	SOX	State Compliance achieved	21-OCT-2016	State	-
1260	1024	SOX	State Compliance achieved	21-OCT-2016	State	-
1256	1052	SOX	State Compliance achieved	12-OCT-2016	State	-
1249	1034	SOX	State Compliance achieved	07-APR-2015	State	-
1233	1029	SOX	State Compliance achieved	26-SEP-2013	State	-
1232	1028	SIF	State Public Notification received	26-SEP-2013	State	-
1213	105	SOX	State Compliance achieved	09-AUG-2010	State	-
1213	1008	SOX	State Compliance achieved	09-AUG-2010	State	-
1212	1013	SIF	State Public Notification received	09-NOV-2009	State	-

1 - 17 of 17

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
1 - TEXOMA PS	33573	Yes	Intake	Surface water	Other	Inactive
5 - S MARRETT / KEGELMAM	18899	Yes	Well	Ground water	Permanent	Inactive
6 - S MARRETT / KEGELMAM	18898	Yes	Well	Ground water	Permanent	Inactive
1 - IRRIGATION	18914	Yes	Well	Ground water	Other	Inactive
2 - SE OF AIRPORT PS	18902	Yes	Well	Ground water	Other	Inactive
3 - S OF 2	18901	Yes	Well	Ground water	Other	Inactive
4 - SW OF AIRPORT PS	18900	Yes	Well	Ground water	Other	Inactive
INTAKE 1 - LK RANDELL	33572	Yes	Intake	Surface water	Permanent	Active
RAW-TAP	117499	No	Common Headers	-	-	Active
SWTP - 2.000 MG - CW	123693	No	Clear Well	-	-	Active
SWTP - 1.000 MG - CW	123694	No	Clear Well	-	-	Active
DISTRIBUTION SYSTEM	40613	No	Distribution System/Zone	-	-	Active
AIRPORT PS - 1200 GPM - SP	112944	No	Pump Facility	-	-	Active
LAKE RANDELL- 4200 GPM	112945	No	Pump Facility	-	-	Active
LAKE RANDELL- 6400 GPM	112946	No	Pump Facility	-	-	Active
LAKE RANDELL- 2700 GPM	112947	No	Pump Facility	-	-	Active
LAKE RANDELL- 1800 GPM	112948	No	Pump Facility	-	-	Active
SWTP - 3472 GPM - SP	165509	No	Pump Facility	-	-	Active
SWTP - 3472 GPM - SP	70399	No	Pump Facility	-	-	Active
SWTP - 3472 GPM - SP	70400	No	Pump Facility	-	-	Active
SWTP - 3472 GPM - SP	70401	No	Pump Facility	-	-	Active
SWTP - 3472 GPM - SP	70402	No	Pump Facility	-	-	Active
PARKDALE PS - 2150 GPM - SP	70403	No	Pump Facility	-	-	Active
PARKDALE PS - 2150 GPM - SP	70404	No	Pump Facility	-	-	Active
AIRPORT PS - 1400 GPM - SP	70405	No	Pump Facility	-	-	Active
AIRPORT PS - 1400 GPM - SP	70406	No	Pump Facility	-	-	Active
COLLEGE PS - 600 GPM - SP	70407	No	Pump Facility	-	-	Active
COLLEGE PS - 600 GPM - SP	70408	No	Pump Facility	-	-	Active
4631 RANDALL LAKE RD; DENISON	135162	No	Sampling Station	-	-	Active
4631 RANDALL LAKE RD, DENISON	51276	No	Sampling Station	-	-	Active
EP002	135163	No	Sampling Station	-	-	Inactive
EP002	51277	No	Sampling Station	-	-	Inactive
SWTP - 1.0 MG	112949	No	Storage	-	-	Active
PARKDALE PS - 3.000 MG - GR	87627	No	Storage	-	-	Active
COLLEGE PS - 0.160 MG - GR	87628	No	Storage	-	-	Active
AIRPORT PS - 0.2 MG - GR	87629	No	Storage	-	-	Active
ACHESON ST - 0.50 MG - EL	87630	No	Storage	-	-	Active
TONE & HANNA - 0.50 MG - EL	87631	No	Storage	-	-	Active
PARKDALE PS - 0.5 MG - EL	87633	No	Storage	-	-	Active
COLLEGE PS - 0.075 MG - EL	87634	No	Storage	-	-	Active
AIRPORT PS - 0.4 MG - EL	87635	No	Storage	-	-	Active
PARKDALE PS - 2.0 MG - EL	87632	No	Storage	-	-	Inactive
PLANT - 4631 RANDELL LAKE RD	9443	No	Treatment Plant	-	-	Active
PLANT - AIRPORT PS	1196	No	Treatment Plant	-	-	Inactive
PLANT RANDELL 2 (NOW PART OF RANDALL WTP	9444	No	Treatment Plant	-	-	Inactive

1 - 45 of 45

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
PLANT - AIRPORT PS	1196	Gaseous Chlorination, Pre	Disinfection
PLANT - AIRPORT PS	1196	Innovative	Other
PLANT - AIRPORT PS	1196	Chlorine Dioxide	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Rapid Mix	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Rapid Mix	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Coagulation	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Coagulation	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Coagulation	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Coagulation	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Coagulation	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Coagulation	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Particulate removal
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Hypochlorination, Post	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Hypochlorination, Pre	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	Disinfection
PLANT - 4631 RANDELL LAKE RD	9443	Innovative	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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