Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CO0134150
PWS Name	DURANGO CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	33787
County Served	La Plata

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, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	2905216	Returned to Compliance	01-MAY-2023	31-MAY-2023	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	2905217	Returned to Compliance	01-MAY-2023	31-MAY-2023	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Cryptosporidium	2905213	Returned to Compliance	01-NOV-2016	30-NOV-2016	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Turbidity	2905214	Returned to Compliance	01-NOV-2016	30-NOV-2016	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	2905215	Returned to Compliance	01-NOV-2016	30-NOV-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2905210	Returned to Compliance	01-OCT-2015	31-DEC-2015	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	2905211	Returned to Compliance	01-OCT-2015	31-DEC-2015	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	2905209	Returned to Compliance	01-JUN-2015	30-JUN-2015	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2904906	Returned to Compliance	01-NOV-2005	30-NOV-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2904805	Returned to Compliance	01-JUL-2005	31-JUL-2005	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	2901804	Returned to Compliance	01-JAN-2002	31-MAR-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	2904705	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	2901798	Returned to Compliance	01-JAN-1997	31-DEC-1997	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	3590	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	3090	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	3390	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	3290	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	2990	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	3190	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	3490	Returned to Compliance	01-JAN-1988	31-DEC-1988	No

1 - 20 of 20

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2928628	2905216	SOX	State Compliance achieved	03-JUL-2023	State	-
2928628	2905217	SOX	State Compliance achieved	03-JUL-2023	State	-
2928621	2905215	SOX	State Compliance achieved	07-MAR-2017	State	RTC because sampled early before 2 day window. The 11/1/16 LT2 sample is considered the replacement sample. ejc
2928621	2905214	SOX	State Compliance achieved	07-MAR-2017	State	RTC because sampled early before 2 day window. The 11/1/16 LT2 sample is considered the replacement sample. ejc
2928621	2905213	SOX	State Compliance achieved	07-MAR-2017	State	RTC because sampled early before 2 day window. The 11/1/16 LT2 sample is considered the replacement sample. ejc
2928618	2905210	SOX	State Compliance achieved	02-MAY-2016	State	RTC with next quarter sampling. ejc 5/2/16
2928618	2905211	SOX	State Compliance achieved	02-MAY-2016	State	RTC with next quarter sampling. ejc 5/2/16
2928617	2905209	SOX	State Compliance achieved	04-JAN-2016	State	consecutive 6-mo compliance. ejc
2928611	2904906	SOX	State Compliance achieved	07-APR-2008	State	>6 mo wo violations. SOXd. aj
2928611	2904805	SOX	State Compliance achieved	07-APR-2008	State	>6 mo wo violations. SOXd. aj
2928612	2904705	SOX	State Compliance achieved	17-OCT-2007	State	RTC w/ receipt of '05-'07 samples
2927102	2901804	SOX	State Compliance achieved	01-APR-2002	State	-
2926898	2901798	SOX	State Compliance achieved	15-JAN-1998	State	-
8002291	3390	SOX	State Compliance achieved	21-MAY-1991	State	DURANGO - VOC FTM - NOW IN COMPLIANCE
8002291	3190	SOX	State Compliance achieved	21-MAY-1991	State	DURANGO - VOC FTM - NOW IN COMPLIANCE
8002291	3090	SOX	State Compliance achieved	21-MAY-1991	State	DURANGO - VOC FTM - NOW IN COMPLIANCE
8002291	2990	SOX	State Compliance achieved	21-MAY-1991	State	DURANGO - VOC FTM - NOW IN COMPLIANCE
8002291	3490	SOX	State Compliance achieved	21-MAY-1991	State	DURANGO - VOC FTM - NOW IN COMPLIANCE
8002291	3590	SOX	State Compliance achieved	21-MAY-1991	State	DURANGO - VOC FTM - NOW IN COMPLIANCE
8002291	3290	SOX	State Compliance achieved	21-MAY-1991	State	DURANGO - VOC FTM - NOW IN COMPLIANCE

1 - 20 of 20

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CITY RESERVOIR NO 1	13665	Yes	Intake	Surface water	Permanent	Active
ANIMAS RIVER	366	Yes	Intake	Surface water	Permanent	Active
FLORIDA RIVER	365	Yes	Intake	Surface water	Permanent	Active
TERMINAL RESERVOIR	20535	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	6913	No	Distribution System/Zone	-	-	Active
COMBINED RAW SOURCE	14021	No	Sampling Station	-	-	Active
7.2 MG TANK	14432	No	Storage	-	-	Active
TANKA VERDE	14559	No	Storage	-	-	Active
SKYRIDGE TANK NO 1	14560	No	Storage	-	-	Active
HILLCREST TANK	14561	No	Storage	-	-	Active
WILDCAT CANYON TANK	14562	No	Storage	-	-	Active
SOUTH DURANGO TANK	14564	No	Storage	-	-	Active
TIMBERLINE TANK	14565	No	Storage	-	-	Active
ROCKRIDGE TANK	14566	No	Storage	-	-	Active
SKYRIDGE TANK 2	17282	No	Storage	-	-	Active
HILLCREST STANDPIPE	17283	No	Storage	-	-	Active
GRANDVIEW TANK	17284	No	Storage	-	-	Active
TWIN BUTTES STORAGE TANK	22205	No	Storage	-	-	Active
WTP CLEARWELL	23283	No	Storage	-	-	Active
3 MG TANK	14434	No	Storage	-	-	Inactive
HIGHWAY 3 TANK	14563	No	Storage	-	-	Inactive
TIERRA VISTA VILLAGE TANK	21101	No	Storage	-	-	Inactive
TWIN BUTTES CHLORINE BOOSTER STATION	22206	No	Treatment Plant	-	-	Active
GRANDVIEW CHLORINE BOOSTER STATION	22506	No	Treatment Plant	-	-	Active
SANTA RITA PUMP STATION	25814	No	Treatment Plant	-	-	Active
COLLEGE MESA WTP	4079	No	Treatment Plant	-	-	Active

1 - 26 of 26

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TWIN BUTTES CHLORINE BOOSTER STATION	22206	Hypochlorination, Post	Disinfection
GRANDVIEW CHLORINE BOOSTER STATION	22506	Hypochlorination, Post	Disinfection
SANTA RITA PUMP STATION	25814	Permanganate	Manganese removal
COLLEGE MESA WTP	4079	Activated Carbon, Powdered	Organics removal
COLLEGE MESA WTP	4079	Innovative	Disinfection
COLLEGE MESA WTP	4079	Flocculation	Particulate removal
COLLEGE MESA WTP	4079	Coagulation	Particulate removal
COLLEGE MESA WTP	4079	Sedimentation	Particulate removal
COLLEGE MESA WTP	4079	Filtration, Rapid Sand	Particulate removal
COLLEGE MESA WTP	4079	Fluoridation	Other
COLLEGE MESA WTP	4079	Hypochlorination, Post	Disinfection
COLLEGE MESA WTP	4079	Innovative	Particulate removal

1 - 12 of 12

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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