Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CO0203012
PWS Name	INVERNESS WSD
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	8140
County Served	Arapahoe

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
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2921094	Known	01-JUN-2026	30-JUN-2026	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2921093	Returned to Compliance	22-MAY-2026	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	2921096	Known	01-APR-2026	30-JUN-2026	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2921087	Returned to Compliance	01-JUL-2023	-	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	2921089	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	2921088	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	2921062	Returned to Compliance	01-JAN-2014	31-DEC-2014	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	2921023	Returned to Compliance	01-APR-2011	30-JUN-2011	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	2921051	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	2921034	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	2921035	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	2921036	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	2921037	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	2921038	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	2921039	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	2921040	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	2921041	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	2921042	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	2921043	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	2921044	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	2921045	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	2921046	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	2921047	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	2921060	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	2921059	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	2921058	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	2921049	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	2921027	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	2921028	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	2921029	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	2921061	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	2921056	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	2921055	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	2921030	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	2921031	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	2921050	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	2921048	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	2921054	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	2921026	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	2921053	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	2921052	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	2921032	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	2921033	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	2921016	Returned to Compliance	01-OCT-2009	31-DEC-2009	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	2921017	Returned to Compliance	01-OCT-2009	31-DEC-2009	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2921011	Returned to Compliance	01-OCT-2008	31-OCT-2008	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	2921010	Returned to Compliance	01-JUN-2008	30-JUN-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	2921008	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2920607	Returned to Compliance	01-OCT-2006	31-OCT-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	2920707	Returned to Compliance	01-JUL-2006	30-SEP-2006	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
3594613	2921094	SIE	State Public Notification requested	21-JUL-2026	State	-
3594617	2921096	SIE	State Public Notification requested	21-JUL-2026	State	-
3594607	2921093	SIA	State Violation/Reminder Notice	12-JUN-2026	State	-
3594606	2921089	SOX	State Compliance achieved	05-MAR-2026	State	RTC with combined uranium sample collected on 3/5/2026 and reported on time. SOXed with date of compliant sample collection -STF 4/29/2026
3594605	2921088	SOX	State Compliance achieved	05-MAR-2026	State	RTC with gross alpha sample collected on 3/5/2026 and reported on time. SOXed with date of compliant sample collection -STF 4/29/2026
3594593	2921087	SIE	State Public Notification requested	18-AUG-2023	State	-
3594585	2921062	SIE	State Public Notification requested	06-MAY-2014	State	-
3594587	2921061	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921053	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921054	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921060	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921059	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921058	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921056	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921055	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921026	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921027	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921028	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921029	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921030	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921031	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921032	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921033	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921034	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921035	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921036	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921037	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921038	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921039	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921040	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921041	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921042	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921043	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921044	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921045	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921046	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921047	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921048	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921049	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921050	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921051	SOX	State Compliance achieved	30-APR-2014	State	-
3594587	2921052	SOX	State Compliance achieved	30-APR-2014	State	-
3594531	2921023	SIF	State Public Notification received	15-JUN-2012	State	PN performed via CCR, 15 Jun, 2012
3594527	2921009	SOX	State Compliance achieved	29-NOV-2010	State	rec'd Fluoride results
3594524	2921016	SIF	State Public Notification received	23-JUN-2010	State	PN included with CCR.
3594524	2921017	SIF	State Public Notification received	23-JUN-2010	State	PN included with CCR.
3594526	2921011	SOX	State Compliance achieved	30-APR-2009	State	-
3594518	2921010	SOX	State Compliance achieved	04-MAR-2009	State	SOXd, > 6 months without a like violation. cj
3594513	2920607	SOX	State Compliance achieved	10-APR-2008	State	>6 mo wo violations. SOXd. aj
3594508	2921008	SOX	State Compliance achieved	27-NOV-2007	State	Sampled 11/7/07. 11/27/07 dg

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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 DENVER	12597	Yes	Consecutive Connection	Surface water	Interim	Active
NO 4 WELL	10665	Yes	Well	Ground water	Permanent	Inactive
NO 3 WELL	10664	Yes	Well	Ground water	Permanent	Inactive
NO 1 WELL	10662	Yes	Well	Ground water	Permanent	Inactive
WELL 4R	21220	Yes	Well	Ground water	Permanent	Active
WELL 1R	20320	Yes	Well	Ground water	Permanent	Active
WELL 3R	18601	Yes	Well	Ground water	Permanent	Active
WELL 2	10663	Yes	Well	Ground water	Permanent	Active
PURCHASED FROM WISE CO0103843	22250	Yes	Consecutive Connection	Surface water	Interim	Active
DISTRIBUTION SYSTEM	7441	No	Distribution System/Zone	-	-	Active
3POINT5 MGD PUMP STATION	17206	No	Pump Facility	-	-	Active
2POINT8 MGD FIRE PUMP STATION	17207	No	Pump Facility	-	-	Active
ELEVATED STORAGE TANK	17203	No	Storage	-	-	Active
720K UNDERGROUND STORAGE TANK	17204	No	Storage	-	-	Active
600K FIRE STORAGE TANK	17205	No	Storage	-	-	Active
TREATMENT PLANT WELL 1R	4696	No	Treatment Plant	-	-	Active
TREATMENT PLANT WELL 2	4697	No	Treatment Plant	-	-	Active
TREATMENT PLANT WELL 3R	4698	No	Treatment Plant	-	-	Active
TREATMENT PLANT WELL 4R	4699	No	Treatment Plant	-	-	Active

1 - 19 of 19

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT WELL 1R	4696	Chloramines	Disinfection by-products control
TREATMENT PLANT WELL 1R	4696	Sequestration	Iron removal
TREATMENT PLANT WELL 1R	4696	Hypochlorination, Post	Disinfection
TREATMENT PLANT WELL 1R	4696	Innovative	Disinfection
TREATMENT PLANT WELL 2	4697	Chloramines	Disinfection by-products control
TREATMENT PLANT WELL 2	4697	Hypochlorination, Post	Disinfection
TREATMENT PLANT WELL 2	4697	Innovative	Disinfection
TREATMENT PLANT WELL 2	4697	Sequestration	Iron removal
TREATMENT PLANT WELL 3R	4698	Chloramines	Disinfection by-products control
TREATMENT PLANT WELL 3R	4698	Hypochlorination, Post	Disinfection
TREATMENT PLANT WELL 3R	4698	Innovative	Disinfection
TREATMENT PLANT WELL 3R	4698	Sequestration	Iron removal
TREATMENT PLANT WELL 4R	4699	Chloramines	Disinfection by-products control
TREATMENT PLANT WELL 4R	4699	Sequestration	Iron removal
TREATMENT PLANT WELL 4R	4699	Innovative	Disinfection
TREATMENT PLANT WELL 4R	4699	Hypochlorination, Post	Disinfection

1 - 16 of 16

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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