Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CO0138045
PWS Name	STERLING CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Groundwater under influence of surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	15100
County Served	Logan

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
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	3006903	Returned to Compliance	01-AUG-2023	31-AUG-2023	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	3006905	Returned to Compliance	01-AUG-2023	31-AUG-2023	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	3006904	Returned to Compliance	01-AUG-2023	31-AUG-2023	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	3006902	Returned to Compliance	01-JUL-2023	31-JUL-2023	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	3006901	Returned to Compliance	01-JUN-2023	30-JUN-2023	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	3006900	Returned to Compliance	01-MAY-2023	31-MAY-2023	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	3006899	Returned to Compliance	01-OCT-2022	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	3006898	Returned to Compliance	01-JUL-2022	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	3006897	Returned to Compliance	05-APR-2021	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	3006896	Returned to Compliance	05-JAN-2021	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	3006893	Returned to Compliance	01-NOV-2020	30-NOV-2020	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	3006894	Returned to Compliance	01-NOV-2020	30-NOV-2020	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	3006895	Returned to Compliance	01-OCT-2020	31-DEC-2020	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	3006889	Returned to Compliance	01-JUL-2020	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	3006888	Returned to Compliance	03-MAR-2019	-	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	3006883	Returned to Compliance	01-SEP-2018	30-SEP-2018	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	3006868	Returned to Compliance	01-JUL-2013	30-SEP-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	3006867	Returned to Compliance	01-APR-2013	30-JUN-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	3006866	Returned to Compliance	01-JAN-2013	31-MAR-2013	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	3006869	Returned to Compliance	01-JAN-2013	31-DEC-2013	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	3006864	Returned to Compliance	01-OCT-2012	31-DEC-2012	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	3006863	Returned to Compliance	01-JUL-2012	30-SEP-2012	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	3006862	Returned to Compliance	01-APR-2012	30-JUN-2012	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	3006861	Returned to Compliance	01-JAN-2012	31-MAR-2012	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	3006865	Returned to Compliance	01-JAN-2012	31-DEC-2012	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	3006859	Returned to Compliance	01-OCT-2011	31-DEC-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	3006860	Returned to Compliance	01-OCT-2011	31-DEC-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	3006858	Returned to Compliance	01-JUL-2011	30-SEP-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	3006856	Returned to Compliance	01-JAN-2011	31-DEC-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	3006857	Returned to Compliance	01-JAN-2011	31-DEC-2011	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	3006855	Returned to Compliance	01-AUG-2010	31-AUG-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	3006852	Returned to Compliance	01-JAN-2010	31-DEC-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	3006853	Returned to Compliance	01-JAN-2010	31-DEC-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	3006851	Returned to Compliance	01-JAN-2010	31-MAR-2010	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	3006849	Returned to Compliance	01-OCT-2009	31-DEC-2009	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	3006845	Returned to Compliance	01-JUL-2009	30-SEP-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	3006840	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	3006841	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	3006842	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	3006833	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	3006834	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	3006835	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	3006832	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	3006837	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	3006838	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	3006831	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	3006843	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	3006836	Returned to Compliance	01-APR-2009	30-JUN-2009	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	3006854	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	3006850	Returned to Compliance	01-JAN-2009	31-DEC-2009	No

1 - 50 of 74

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
3026782	3006903	SIE	State Public Notification requested	24-OCT-2023	State	-
3026784	3006904	SIE	State Public Notification requested	24-OCT-2023	State	-
3026786	3006905	SIE	State Public Notification requested	24-OCT-2023	State	-
3026791	3006901	SOX	State Compliance achieved	11-OCT-2023	State	RTCd based on correct sample collection and replacements having been collected throughout SEP & OCT2023 BJK
3026791	3006902	SOX	State Compliance achieved	11-OCT-2023	State	RTCd based on correct sample collection and replacements having been collected throughout SEP & OCT2023 BJK
3026791	3006900	SOX	State Compliance achieved	11-OCT-2023	State	RTCd based on correct sample collection and replacements having been collected throughout SEP & OCT2023 BJK
3026773	3006899	SOX	State Compliance achieved	10-NOV-2022	State	-
3026774	3006898	SOX	State Compliance achieved	18-OCT-2022	State	-
3026767	3006897	SOX	State Compliance achieved	23-APR-2021	State	-
3026762	3006896	SIA	State Violation/Reminder Notice	19-FEB-2021	State	-
3026758	3006894	SOX	State Compliance achieved	08-JAN-2021	State	-
3026758	3006893	SOX	State Compliance achieved	08-JAN-2021	State	-
3026758	3006895	SOX	State Compliance achieved	08-JAN-2021	State	-
3026759	3006889	SOX	State Compliance achieved	15-OCT-2020	State	-
3026740	3006888	SOX	State Compliance achieved	28-MAY-2019	State	-
3026742	3006883	SOX	State Compliance achieved	10-JAN-2019	State	-
3026720	3006825	SOX	State Compliance achieved	17-SEP-2014	State	-
3026720	3006829	SOX	State Compliance achieved	17-SEP-2014	State	-
3026720	3006830	SOX	State Compliance achieved	17-SEP-2014	State	-
3026720	3006823	SOX	State Compliance achieved	17-SEP-2014	State	-
3026720	3006809	SOX	State Compliance achieved	17-SEP-2014	State	-
3026719	3006864	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006865	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006866	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006867	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006868	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006869	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006863	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006846	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006851	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006852	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006862	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006861	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006860	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006859	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006858	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006857	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006856	SOX	State Compliance achieved	18-AUG-2014	State	-
3026719	3006853	SOX	State Compliance achieved	18-AUG-2014	State	-
3026680	3006855	SOX	State Compliance achieved	14-MAR-2011	State	6 months without TC+ or M&R
3026674	3006854	SIE	State Public Notification requested	16-JUN-2010	State	-
3026672	3006844	SOX	State Compliance achieved	29-APR-2010	State	rec'd compliant sample in 2q 2010
3026664	3006850	SOX	State Compliance achieved	22-FEB-2010	State	RTC on 2/22/2010 with sample collected on 2/9/2010. ~AM 3/5/2010
3026663	3006849	SOX	State Compliance achieved	10-FEB-2010	State	RTC on 3/1/2010 with sample collected on 2/10/2010. ~AM 3/5/2010
3026655	3006845	SOX	State Compliance achieved	01-DEC-2009	State	RTC 12/01/2009. 3Q results rcvd, sampled 08/12/2009 ~AM 12/01/09
3026650	3006842	SOX	State Compliance achieved	28-AUG-2009	State	RTC w/ receipt of 3Q09 sample.
3026650	3006841	SOX	State Compliance achieved	28-AUG-2009	State	RTC w/ receipt of 3Q09 sample.
3026650	3006840	SOX	State Compliance achieved	28-AUG-2009	State	RTC w/ receipt of 3Q09 sample.
3026650	3006838	SOX	State Compliance achieved	28-AUG-2009	State	RTC w/ receipt of 3Q09 sample.
3026650	3006837	SOX	State Compliance achieved	28-AUG-2009	State	RTC w/ receipt of 3Q09 sample.

1 - 50 of 74

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL NO 12	2795	Yes	Well	Ground water	Emergency	Inactive
CHEIRS PARK WELL NO 14 SITE 4	2797	Yes	Well	Ground water	Seasonal	Inactive
WELL NO 13	2796	Yes	Well	Ground water	Seasonal	Inactive
WELL NO 11	2794	Yes	Well	Ground water	Seasonal	Inactive
WELL NO 3	2803	Yes	Well	Ground water	Permanent	Inactive
WELL NO 2	2802	Yes	Well	Ground water	Permanent	Inactive
WELL NO 10	2793	Yes	Well	Ground water	Permanent	Inactive
WELL NO 7	2790	Yes	Well	Ground water	Permanent	Inactive
SCALVA WELL NO 1	17333	Yes	Well	Ground water under the influence of surface water	Permanent	Inactive
WELL NO 5	2805	Yes	Well	Ground water	Permanent	Active
WELL NO 4A	2804	Yes	Well	Ground water	Permanent	Active
WELL NO 1	2801	Yes	Well	Ground water	Permanent	Active
WELL NO 30	2800	Yes	Well	Ground water	Permanent	Active
WELL NO 15	2798	Yes	Well	Ground water	Permanent	Active
WELL NO 9	2792	Yes	Well	Ground water	Permanent	Active
WELL NO 8	2791	Yes	Well	Ground water	Permanent	Active
WELL 9R REDRILL	22360	Yes	Well	Ground water	Permanent	Active
REDRILL OF WELL 7	21785	Yes	Well	Ground water	Permanent	Active
RE-DRILL OF WELL NO. 2	21373	Yes	Well	Ground water	Permanent	Active
WELL NO 10R	17352	Yes	Well	Ground water	Permanent	Active
WELL NO 3R	17351	Yes	Well	Ground water	Permanent	Active
SCALVA WELL NO 2	17334	Yes	Well	Ground water under the influence of surface water	Permanent	Active
COLUMBINE PARK WELL	2799	Yes	Well	Ground water	Emergency	Inactive
COMBINED RAW WATER INTAKE	20922	No	Common Headers	-	-	Active
DISTRIBUTION SYSTEM	7013	No	Distribution System/Zone	-	-	Active
SS FOR RO COMBINED FILTER EFFLUENT	21029	No	Sampling Station	-	-	Active
SS FOR FILTER #1B AT CARTRIDGE WTP	21031	No	Sampling Station	-	-	Active
SS FOR FILTER #2B AT CARTRIDGE WTP	21032	No	Sampling Station	-	-	Active
SS FOR FILTER #3B AT CARTRIDGE WTP	21033	No	Sampling Station	-	-	Active
PIPELINE WELLS 15 AND 30 SITE 3	418	No	Sampling Station	-	-	Inactive
NORTH TANK 500K	1238	No	Storage	-	-	Active
SOUTH TANK 500K	1239	No	Storage	-	-	Active
TANK NO 1 WEST SITE 6	1240	No	Storage	-	-	Active
TANK NO 2 2 MG WEST SITE 5	1241	No	Storage	-	-	Active
STERLING REVERSE OSMOSIS WTP	20516	No	Treatment Plant	-	-	Active
STERLING CARTRIDGE FILTER WTP	21030	No	Treatment Plant	-	-	Active
CLEAR WELL - TP - CT FOR 030 AND 033	21106	No	Treatment Plant	-	-	Active
GAS CL2 FOR WELL NO 12	4191	No	Treatment Plant	-	-	Active
CHLORINE FAC LINE A E1 SITE 1	4189	No	Treatment Plant	-	-	Inactive
GAS CL2 FOR WELL NO 11	4190	No	Treatment Plant	-	-	Inactive
GAS CL2 FOR WELL NO 13	4192	No	Treatment Plant	-	-	Inactive
GAS CL2 FOR CHEIRS PARK WELL NO 14	4193	No	Treatment Plant	-	-	Inactive
GAS CL2 FOR SOUTH GOLF WELL 15	4194	No	Treatment Plant	-	-	Inactive
CHLORINE FAC LINE B E2 SITE 2	4195	No	Treatment Plant	-	-	Inactive
GAS CL2 FOR COLUMBINE PARK WELL	4196	No	Treatment Plant	-	-	Inactive
GAS CL2 FOR WELL NO 30	4197	No	Treatment Plant	-	-	Inactive

1 - 46 of 46

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
STERLING REVERSE OSMOSIS WTP	20516	Reverse Osmosis	Particulate removal
STERLING REVERSE OSMOSIS WTP	20516	Innovative	Particulate removal
STERLING CARTRIDGE FILTER WTP	21030	Innovative	Particulate removal
STERLING CARTRIDGE FILTER WTP	21030	Innovative	Particulate removal
STERLING CARTRIDGE FILTER WTP	21030	Hypochlorination, Pre	Disinfection
CLEAR WELL - TP - CT FOR 030 AND 033	21106	Hypochlorination, Post	Disinfection
CLEAR WELL - TP - CT FOR 030 AND 033	21106	Innovative	Corrosion control
CLEAR WELL - TP - CT FOR 030 AND 033	21106	Innovative	Disinfection
CHLORINE FAC LINE A E1 SITE 1	4189	Gaseous Chlorination, Post	Disinfection
GAS CL2 FOR WELL NO 11	4190	Gaseous Chlorination, Post	Disinfection
GAS CL2 FOR WELL NO 12	4191	Innovative	Disinfection
GAS CL2 FOR WELL NO 12	4191	Gaseous Chlorination, Post	Disinfection
GAS CL2 FOR WELL NO 13	4192	Gaseous Chlorination, Post	Disinfection
GAS CL2 FOR SOUTH GOLF WELL 15	4194	Gaseous Chlorination, Post	Disinfection
CHLORINE FAC LINE B E2 SITE 2	4195	Gaseous Chlorination, Post	Disinfection
GAS CL2 FOR COLUMBINE PARK WELL	4196	Gaseous Chlorination, Post	Disinfection
GAS CL2 FOR WELL NO 30	4197	Gaseous Chlorination, Post	Disinfection

1 - 17 of 17

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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