Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CO0107485
PWS Name	LONGMONT CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	102866
County Served	Boulder

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 and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	3002689	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	3002688	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	3002494	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	3002509	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	3002505	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	3002504	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	3002503	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	3002502	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	3002501	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	3002506	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	3002508	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	3002507	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	3002479	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	3002480	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	3002481	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	3002482	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	3002483	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	3002484	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	3002485	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	3002486	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	3002487	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	3002488	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	3002489	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	3002490	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	3002491	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	3002492	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	3002493	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	3002495	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	3002496	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	3002497	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	3002498	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	3002499	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	3002500	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	3001295	Returned to Compliance	01-JUN-1995	30-JUN-1995	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	1990	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	1790	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	2190	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	1590	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	1690	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	2090	Returned to Compliance	01-JAN-1988	31-DEC-1988	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	1890	Returned to Compliance	01-JAN-1988	31-DEC-1988	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
3001323	3002688	SOX	State Compliance achieved	24-OCT-2022	State	Monitored 4Qtr2022. slh 03/30/2023
3001323	3002689	SOX	State Compliance achieved	24-OCT-2022	State	Monitored 4Qtr2022. slh 03/30/2023
3001320	3002491	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002509	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002508	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002507	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002506	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002505	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002504	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002503	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002479	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002480	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002481	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002482	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002483	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002484	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002485	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002486	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002487	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002488	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002489	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002490	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002492	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002493	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002494	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002495	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002496	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002497	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002498	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002499	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002500	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002501	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001320	3002502	SOX	State Compliance achieved	29-SEP-2009	State	Sampled 8/1/06 and 8/4/09. RTC. 9/29/09 dgj
3001307	3001295	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
8002891	1590	SOX	State Compliance achieved	24-MAY-1991	State	LONGMONT VOC FTM - NOW IN COMPLIANCE
8002891	1690	SOX	State Compliance achieved	24-MAY-1991	State	LONGMONT VOC FTM - NOW IN COMPLIANCE
8002891	2190	SOX	State Compliance achieved	24-MAY-1991	State	LONGMONT VOC FTM - NOW IN COMPLIANCE
8002891	2090	SOX	State Compliance achieved	24-MAY-1991	State	LONGMONT VOC FTM - NOW IN COMPLIANCE
8002891	1990	SOX	State Compliance achieved	24-MAY-1991	State	LONGMONT VOC FTM - NOW IN COMPLIANCE
8002891	1890	SOX	State Compliance achieved	24-MAY-1991	State	LONGMONT VOC FTM - NOW IN COMPLIANCE
8002891	1790	SOX	State Compliance achieved	24-MAY-1991	State	LONGMONT VOC FTM - NOW IN COMPLIANCE

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
EMERGENCY INTERCONNECT WITH LEFTHAND WD	23337	Yes	Consecutive Connection	Surface water	Emergency	Active
HIGHLAND DITCH PUMP STATION	93	Yes	Intake	Surface water	Seasonal	Active
CBT CANAL	92	Yes	Intake	Surface water	Seasonal	Active
SAINT VRAIN	88	Yes	Intake	Surface water	Permanent	Inactive
SOUTH ST VRAIN PIPELINE	91	Yes	Intake	Surface water	Permanent	Active
NORTH ST VRAIN PIPELINE	90	Yes	Intake	Surface water	Permanent	Active
CBT PIPELINE	14574	Yes	Intake	Surface water	Permanent	Active
BURCH LAKE	87	Yes	Intake	Surface water	Emergency	Active
DISTRIBUTION SYSTEM	6487	No	Distribution System/Zone	-	-	Active
COMBINED RAW SOURCE FOR 005	14170	No	Sampling Station	-	-	Active
COMBINED RAW SOURCE FOR 013	15092	No	Sampling Station	-	-	Active
CBT PL COMP FLANDERS RAW 1	21374	No	Sampling Station	-	-	Active
COMP013013 FLANDERS RAW 2	21375	No	Sampling Station	-	-	Active
BYPASS NF FLANDERS RAW 3	21376	No	Sampling Station	-	-	Active
COMP GADDIS RAW 1	21377	No	Sampling Station	-	-	Active
BURCH 1 COMP GADDIS RAW 2	21378	No	Sampling Station	-	-	Active
COMBINED RAW SOURCE FOR 003	13976	No	Sampling Station	-	-	Inactive
COMBINED RAW SOURCE FOR 004	13977	No	Sampling Station	-	-	Inactive
MONTGOMERY TANK	1105	No	Storage	-	-	Active
NORTH TANK	1106	No	Storage	-	-	Active
SKYLINE TANK	12606	No	Storage	-	-	Active
PRICE PARK TANK	25809	No	Storage	-	-	Active
PRICE PARK RESERVOIR	14588	No	Storage	-	-	Inactive
FOREBAY POND	15147	No	Storage	-	-	Inactive
NELSON FLANDERS WTP	13721	No	Treatment Plant	-	-	Active
WADE GADDIS WTP	3434	No	Treatment Plant	-	-	Active
NORTH SWTP01	3432	No	Treatment Plant	-	-	Inactive
SOUTH SWTP02	3433	No	Treatment Plant	-	-	Inactive

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
NELSON FLANDERS WTP	13721	Innovative	Corrosion control
NELSON FLANDERS WTP	13721	Innovative	Disinfection
NELSON FLANDERS WTP	13721	Coagulation	Particulate removal
NELSON FLANDERS WTP	13721	Activated Carbon, Powdered	Taste / odor control
NELSON FLANDERS WTP	13721	Hypochlorination, Post	Disinfection
NELSON FLANDERS WTP	13721	Flocculation	Particulate removal
NELSON FLANDERS WTP	13721	Sedimentation	Particulate removal
NELSON FLANDERS WTP	13721	Filtration, Rapid Sand	Particulate removal
NELSON FLANDERS WTP	13721	Fluoridation	Other
NORTH SWTP01	3432	pH Adjustment, Post	Corrosion control
NORTH SWTP01	3432	Filtration, Rapid Sand	Particulate removal
NORTH SWTP01	3432	Coagulation	Particulate removal
NORTH SWTP01	3432	Hypochlorination, Pre	Disinfection
NORTH SWTP01	3432	Hypochlorination, Post	Disinfection
NORTH SWTP01	3432	Fluoridation	Other
NORTH SWTP01	3432	Activated Carbon, Powdered	Taste / odor control
NORTH SWTP01	3432	pH Adjustment, Pre	Particulate removal
NORTH SWTP01	3432	Sedimentation	Particulate removal
NORTH SWTP01	3432	Rapid Mix	Particulate removal
NORTH SWTP01	3432	Flocculation	Particulate removal
SOUTH SWTP02	3433	Hypochlorination, Post	Disinfection
SOUTH SWTP02	3433	pH Adjustment, Post	Corrosion control
SOUTH SWTP02	3433	Fluoridation	Other
SOUTH SWTP02	3433	Activated Carbon, Powdered	Taste / odor control
SOUTH SWTP02	3433	pH Adjustment, Pre	Particulate removal
SOUTH SWTP02	3433	Sedimentation	Particulate removal
SOUTH SWTP02	3433	Rapid Mix	Particulate removal
SOUTH SWTP02	3433	Flocculation	Particulate removal
SOUTH SWTP02	3433	Filtration, Rapid Sand	Particulate removal
SOUTH SWTP02	3433	Coagulation	Particulate removal
SOUTH SWTP02	3433	Hypochlorination, Pre	Disinfection
WADE GADDIS WTP	3434	Coagulation	Organics removal
WADE GADDIS WTP	3434	Innovative	Disinfection by-products control
WADE GADDIS WTP	3434	Coagulation	Disinfection by-products control
WADE GADDIS WTP	3434	Flocculation	Organics removal
WADE GADDIS WTP	3434	Sedimentation	Organics removal
WADE GADDIS WTP	3434	Coagulation	Particulate removal
WADE GADDIS WTP	3434	Filtration, Rapid Sand	Organics removal
WADE GADDIS WTP	3434	Hypochlorination, Post	Disinfection
WADE GADDIS WTP	3434	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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