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PWS ID	CO0135554
PWS Name	NORTHERN COLORADO WA
PWS Type	Community water system
Owner Type	Private
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	4675
County Served	Larimer

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, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	806	Returned to Compliance	01-NOV-2005	30-NOV-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	705	Returned to Compliance	01-MAY-2005	31-MAY-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	1009	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	1010	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	1011	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	1012	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	1013	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	1014	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	1015	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	1016	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	1017	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	1018	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	1019	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	1020	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	1036	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	1022	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	1023	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	1024	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	1025	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	1026	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	1027	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	1028	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	1029	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	1035	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	1030	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	1031	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	1032	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	1033	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	1034	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	1038	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	1008	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	1037	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	1021	Returned to Compliance	01-JAN-2005	31-DEC-2007	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
1114	1022	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1037	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1008	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1009	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1010	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1011	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1012	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1013	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1014	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1015	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1016	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1017	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1018	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1019	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1020	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1021	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1038	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1023	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1024	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1025	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1026	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1027	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1028	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1029	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1030	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1031	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1032	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1033	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1034	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1035	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1114	1036	SOX	State Compliance achieved	12-JUN-2009	State	Sampled as required RTC. 6/12/09 dgj
1112	806	SOX	State Compliance achieved	07-APR-2008	State	>6 mo wo violations. SOXd. aj
1112	705	SOX	State Compliance achieved	07-APR-2008	State	>6 mo wo violations. SOXd. aj

1 - 33 of 33

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
PURCHASED WATER ELCO CO0135233	13798	Yes	Consecutive Connection	Surface water	Permanent	Active
WELL NO 1 NEW	2718	Yes	Well	Ground water	Permanent	Active
WELL NO 2	2717	Yes	Well	Ground water	Permanent	Active
WELL NO 6	25717	Yes	Well	Ground water	Permanent	Active
WELL NO 5	20692	Yes	Well	Ground water	Permanent	Active
WELL NO 4R	20691	Yes	Well	Ground water	Permanent	Active
WELL NO 3	15364	Yes	Well	Ground water	Emergency	Active
PURCHASED WATER N WELD COUNTY CO0162553	13799	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	6978	No	Distribution System/Zone	-	-	Active
PUMP STATION 4 STORAGE TANK	13800	No	Storage	-	-	Active
BUCKEYE TANK	13801	No	Storage	-	-	Active
REDUNDANT TANK AT PUMP STATION #4	23412	No	Storage	-	-	Active
GROUNDWATER TREATMENT PLANT	13797	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR 011 AND 012	20693	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR 015	25718	No	Treatment Plant	-	-	Active
STORAGE TANK FOR CT	4152	No	Treatment Plant	-	-	Active

1 - 16 of 16

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
GROUNDWATER TREATMENT PLANT	13797	Gaseous Chlorination, Post	Disinfection
TREATMENT PLANT FOR 011 AND 012	20693	Gaseous Chlorination, Post	Disinfection
TREATMENT PLANT FOR 011 AND 012	20693	Innovative	Disinfection
TREATMENT PLANT FOR 015	25718	Gaseous Chlorination, Post	Disinfection
TREATMENT PLANT FOR 015	25718	Innovative	Disinfection
STORAGE TANK FOR CT	4152	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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