Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CO0143559
PWS Name	NUCLA TOWN OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	875
County Served	Montrose

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	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	4009450	Returned to Compliance	01-OCT-2024	-	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	4009447	Returned to Compliance	01-APR-2024	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	4009448	Returned to Compliance	01-APR-2024	30-JUN-2024	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	4009449	Returned to Compliance	01-APR-2024	30-APR-2024	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	4009446	Returned to Compliance	01-JAN-2024	-	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	4009443	Returned to Compliance	01-NOV-2023	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	4009445	Returned to Compliance	01-NOV-2023	30-NOV-2023	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	4009444	Returned to Compliance	01-OCT-2023	31-DEC-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4009440	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4009441	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	4009439	Returned to Compliance	01-OCT-2022	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	4009438	Returned to Compliance	01-OCT-2021	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4009434	Returned to Compliance	30-JAN-2018	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4009433	Returned to Compliance	30-OCT-2017	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4009432	Returned to Compliance	30-JUL-2017	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4009428	Returned to Compliance	15-JAN-2017	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4009424	Returned to Compliance	28-OCT-2016	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4009427	Returned to Compliance	01-OCT-2016	31-DEC-2016	Yes
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4009425	Returned to Compliance	01-OCT-2016	31-DEC-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4009426	Returned to Compliance	01-OCT-2016	31-DEC-2016	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4009423	Returned to Compliance	01-JUL-2016	30-SEP-2016	Yes
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4009422	Returned to Compliance	01-JAN-2016	31-MAR-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4009419	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)	4009420	Returned to Compliance	01-OCT-2015	31-DEC-2015	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	4009416	Returned to Compliance	01-APR-2014	30-APR-2014	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	4009418	Returned to Compliance	01-APR-2014	30-JUN-2014	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	4009415	Returned to Compliance	01-OCT-2011	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	4009414	Returned to Compliance	01-JUL-2011	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	4009412	Returned to Compliance	01-JAN-2011	31-MAR-2011	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	4009411	Returned to Compliance	01-JAN-2011	31-JAN-2011	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	4009408	Returned to Compliance	01-SEP-2010	30-SEP-2010	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	4009409	Returned to Compliance	01-JUL-2010	30-SEP-2010	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	4005605	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	4005505	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	4005405	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	4006305	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	4006205	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	4005805	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	4005905	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	4006105	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	4005705	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	4006405	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	4005395	Returned to Compliance	01-AUG-1995	31-AUG-1995	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	2003195	Returned to Compliance	01-FEB-1995	28-FEB-1995	No

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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
4031716	4009450	SOX	State Compliance achieved	22-JUL-2025	State	-
4031715	4009446	SOX	State Compliance achieved	24-OCT-2024	State	System submitted 2023 consumer notice on 10/24/2024 lmf 10/28/2024
4031712	4009447	SOX	State Compliance achieved	10-JUN-2024	State	Lab uploaded results on 6/10/2024 lmf 7/25/2024
4031712	4009448	SOX	State Compliance achieved	10-JUN-2024	State	Lab uploaded results on 6/10/2024 lmf 7/25/2024
4031712	4009449	SOX	State Compliance achieved	10-JUN-2024	State	Lab uploaded results on 6/10/2024 lmf 7/25/2024
4031704	4009445	SIE	State Public Notification requested	12-DEC-2023	State	-
4031704	4009443	SIE	State Public Notification requested	12-DEC-2023	State	-
4031704	4009444	SIE	State Public Notification requested	12-DEC-2023	State	-
4031702	4009441	SOX	State Compliance achieved	03-NOV-2023	State	System collected next required routine sampling lmf 12/5/2023
4031702	4009440	SOX	State Compliance achieved	03-NOV-2023	State	System collected next required routine sampling lmf 12/5/2023
4031701	4009439	SOX	State Compliance achieved	13-OCT-2023	State	SOX sample reported in accordance with the rule 10/13/2023 FCL;
4031689	4009438	SOX	State Compliance achieved	26-OCT-2021	State	SOXed. Results received late on 10/26/2021. slh 11/3/2021
4031675	4009434	SOX	State Compliance achieved	17-MAY-2018	State	-
4031675	4009433	SOX	State Compliance achieved	17-MAY-2018	State	-
4031675	4009432	SOX	State Compliance achieved	17-MAY-2018	State	-
4031661	4009427	SIF	State Public Notification received	07-MAR-2017	State	-
4031660	4009428	SOX	State Compliance achieved	03-MAR-2017	State	Distributed PN correctly for 4Q2016 TTHM MCL.
4031668	4009426	SOX	State Compliance achieved	15-FEB-2017	State	RTC with 1Q2017 sampling. ejc
4031668	4009425	SOX	State Compliance achieved	15-FEB-2017	State	RTC with 1Q2017 sampling. ejc
4031668	4009423	SOX	State Compliance achieved	15-FEB-2017	State	RTC with 1Q2017 sampling. ejc
4031656	4009424	SOX	State Compliance achieved	22-DEC-2016	State	System distributed PN and submitted PN and certificate of delivery. hpo 12/22/2016
4031647	4009419	SOX	State Compliance achieved	07-SEP-2016	State	-
4031647	4009420	SOX	State Compliance achieved	07-SEP-2016	State	-
4031646	4009422	SOX	State Compliance achieved	08-JUL-2016	State	-
4031637	4009418	SOX	State Compliance achieved	01-OCT-2014	State	system RTC with 6 months of sampling 3/31/15 jc
4031637	4009416	SOX	State Compliance achieved	01-OCT-2014	State	system RTC with 6 months of sampling 3/31/15 jc
4031630	4009415	SIF	State Public Notification received	23-JUL-2012	State	PN performed 16 Jul 2012.
4031626	4009414	SOX	State Compliance achieved	18-AUG-2011	State	rec'd CCR and COD
4031625	4009409	SOX	State Compliance achieved	31-JUL-2011	State	6 mo without M&R or MCL
4031625	4009411	SOX	State Compliance achieved	31-JUL-2011	State	6 mo without M&R or MCL
4031625	4009412	SOX	State Compliance achieved	31-JUL-2011	State	6 mo without M&R or MCL
4031625	4009408	SOX	State Compliance achieved	31-JUL-2011	State	6 mo without M&R or MCL
4031611	4005705	SOX	State Compliance achieved	10-JUN-2009	State	System reclassified to SWP consecutive sytsem 4/12/05..
4031611	4005605	SOX	State Compliance achieved	10-JUN-2009	State	System reclassified to SWP consecutive sytsem 4/12/05..
4031611	4005805	SOX	State Compliance achieved	10-JUN-2009	State	System reclassified to SWP consecutive sytsem 4/12/05..
4031611	4006105	SOX	State Compliance achieved	10-JUN-2009	State	System reclassified to SWP consecutive sytsem 4/12/05..
4031611	4006205	SOX	State Compliance achieved	10-JUN-2009	State	System reclassified to SWP consecutive sytsem 4/12/05..
4031611	4006305	SOX	State Compliance achieved	10-JUN-2009	State	System reclassified to SWP consecutive sytsem 4/12/05..
4031611	4006405	SOX	State Compliance achieved	10-JUN-2009	State	System reclassified to SWP consecutive sytsem 4/12/05..
4031611	4005905	SOX	State Compliance achieved	10-JUN-2009	State	System reclassified to SWP consecutive sytsem 4/12/05..
4031611	4005405	SOX	State Compliance achieved	10-JUN-2009	State	System reclassified to SWP consecutive sytsem 4/12/05..
4031611	4005505	SOX	State Compliance achieved	10-JUN-2009	State	System reclassified to SWP consecutive sytsem 4/12/05..
4031608	2003195	SOX	State Compliance achieved	25-AUG-2008	State	Now SWP system, sv 8/25/08
4031607	4005395	SOX	State Compliance achieved	05-FEB-2007	State	> 6 months compliant 2/5/07 sp

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
PURCHASED FROM MUSTANG WA CO0143525	14217	Yes	Consecutive Connection	Surface water	Permanent	Active
TEMPORARY STORAGE TANK	19954	Yes	Non-piped, Non-purchased	Surface water	Permanent	Inactive
SAN MIGUEL RIVER LIFT STATION	456	Yes	Intake	Surface water	Permanent	Inactive
DITCH FROM SAN MIGUEL RIVER	455	Yes	Intake	Surface water	Permanent	Inactive
DISTRIBUTION SYSTEM	7055	No	Distribution System/Zone	-	-	Active
AIRPORT PUMP FACILITY	17169	No	Pump Facility	-	-	Active
COMBINED RAW SOURCE	14043	No	Sampling Station	-	-	Inactive
ELEVATED STEEL STORAGE TANK	13195	No	Storage	-	-	Active
MONTROSE COUNTY CONCRETE TANK	13196	No	Storage	-	-	Inactive
NUCLA SWTP01	4244	No	Treatment Plant	-	-	Inactive

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Treatment Processes

No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.

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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