Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CO0118020
PWS Name	COTTONWOOD WSD
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	10867
County Served	Douglas

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	4004718	Returned to Compliance	01-JUL-2025	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4004717	Returned to Compliance	24-MAR-2025	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4004715	Returned to Compliance	01-OCT-2024	31-DEC-2024	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4004714	Returned to Compliance	01-OCT-2024	31-DEC-2024	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	4004712	Returned to Compliance	01-JUL-2023	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4004676	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4004677	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	4004720	Known	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	4004719	Known	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	4004645	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	4004643	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	4004640	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	4004639	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	4004638	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	4004637	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	4004642	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	4004636	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	4004635	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	4004634	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	4004633	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	4004632	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	4004631	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	4004630	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	4004629	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	4004628	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	4004627	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	4004626	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	4004625	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	4004624	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	4004623	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	4004622	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	4004621	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	4004620	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	4004619	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	4004618	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	4004641	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	4004644	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4004615	Returned to Compliance	01-JAN-2013	31-DEC-2013	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	4004614	Returned to Compliance	01-JAN-2013	31-DEC-2013	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	4004608	Returned to Compliance	01-OCT-2008	31-OCT-2008	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	4004307	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	4004107	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	4004207	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	4004407	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2000999	Returned to Compliance	01-JAN-1999	31-JAN-1999	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	4001198	Returned to Compliance	01-AUG-1998	31-AUG-1998	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
4029349	4004719	SIE	State Public Notification requested	20-JAN-2026	State	-
4029351	4004720	SIE	State Public Notification requested	20-JAN-2026	State	-
4029352	4004718	SOX	State Compliance achieved	02-DEC-2025	State	RTC with 61 of 60 LCR samples collected and reported in accordance with the rule for 7/1/2025-12/31/2025 MP, no-low risk or missed samples. SOXed with date final lcr sample received by state -STF 1/23/2026
4029343	4004717	SIA	State Violation/Reminder Notice	28-APR-2025	State	-
4029347	4004715	SOX	State Compliance achieved	04-FEB-2025	State	RTC with samples collected on 2/4/2025 for Q1 2025 as required and reported on time. Sox date of Q1 sample collection -STF 7/16/2025
4029347	4004714	SOX	State Compliance achieved	04-FEB-2025	State	RTC with samples collected on 2/4/2025 for Q1 2025 as required and reported on time. Sox date of Q1 sample collection -STF 7/16/2025
4029334	4004712	SIE	State Public Notification requested	18-AUG-2023	State	-
4029332	4004677	SOX	State Compliance achieved	01-DEC-2022	State	4Q DBPs sampled and reported on time, sox'd according to rule -SKT 4/13/2023
4029332	4004676	SOX	State Compliance achieved	01-DEC-2022	State	4Q DBPs sampled and reported on time, sox'd according to rule -SKT 4/13/2023
4029324	4004645	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004628	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004643	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004642	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004618	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004619	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004620	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004621	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004622	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004623	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004624	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004625	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004626	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004627	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004644	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004629	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004630	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004631	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004632	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004633	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004634	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004635	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004636	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004637	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004638	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004639	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004640	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029324	4004641	SOX	State Compliance achieved	15-JUL-2020	State	System sampled SOCA at 008 in May 2020.
4029314	4004615	SOX	State Compliance achieved	27-NOV-2013	State	Samples collected in August were received 11/27/13. Late Reporting Violation requires PN. ek 12/16/13
4029314	4004614	SOX	State Compliance achieved	27-NOV-2013	State	Samples collected in August were received 11/27/13. Late Reporting Violation requires PN. ek 12/16/13
4029311	4004608	SOX	State Compliance achieved	28-JAN-2009	State	-
4029308	4001198	SOX	State Compliance achieved	04-APR-2008	State	>6 mo wo violations. SOXd. aj
4029308	2000999	SOX	State Compliance achieved	04-APR-2008	State	>6 mo wo violations. SOXd. aj
4029207	4004407	SOX	State Compliance achieved	01-MAR-2007	State	Recd late.
4029207	4004207	SOX	State Compliance achieved	01-MAR-2007	State	Recd late.
4029207	4004107	SOX	State Compliance achieved	01-MAR-2007	State	Recd late.
4029207	4004307	SOX	State Compliance achieved	01-MAR-2007	State	Recd late.

1 - 46 of 46

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
PURCHASED FROM JWPP CO0103418	19007	Yes	Consecutive Connection	Ground water	Emergency	Active
D1 WELL	1974	Yes	Well	Ground water	Permanent	Inactive
WELL D1RR	24332	Yes	Well	Ground water	Permanent	Active
D2 WELL	1977	Yes	Well	Ground water	Permanent	Active
D3 WELL	1975	Yes	Well	Ground water	Permanent	Active
D11 WELL	13656	Yes	Well	Ground water	Permanent	Active
D4A WELL	12879	Yes	Well	Ground water	Permanent	Active
DD4 WELL MOVED TO JWPP CO0103418	1976	Yes	Well	Ground water	Emergency	Active
CC4 MOVED TO JWPP CO0103418	19010	Yes	Well	Ground water	Emergency	Active
DD1 MOVED TO JWPP CO0103418	19009	Yes	Well	Ground water	Emergency	Active
PURCHASED FROM WISE CO0103843	22249	Yes	Consecutive Connection	Surface water	Interim	Active
DISTRIBUTION SYSTEM	6613	No	Distribution System/Zone	-	-	Active
PUMP STATION	17388	No	Pump Facility	-	-	Active
DISTRIBUTION TANK 2MG	13473	No	Storage	-	-	Active
TREATMENT PLANT FOR WELL D1	13468	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELL D3	13469	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELL D2	13471	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELL D4A	13472	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELL D11	13655	No	Treatment Plant	-	-	Active
TP NO 3 FOR WELL DD4 JWPP	13470	No	Treatment Plant	-	-	Inactive

1 - 20 of 20

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT FOR WELL D1	13468	Innovative	Corrosion control
TREATMENT PLANT FOR WELL D1	13468	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELL D3	13469	Innovative	Corrosion control
TREATMENT PLANT FOR WELL D3	13469	Hypochlorination, Post	Disinfection
TP NO 3 FOR WELL DD4 JWPP	13470	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELL D2	13471	Innovative	Corrosion control
TREATMENT PLANT FOR WELL D2	13471	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELL D4A	13472	Innovative	Corrosion control
TREATMENT PLANT FOR WELL D4A	13472	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELL D11	13655	Innovative	Corrosion control
TREATMENT PLANT FOR WELL D11	13655	Hypochlorination, Post	Disinfection

1 - 11 of 11

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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