Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	WA5311800
PWS Name	CASTLE ROCK MUNICIPAL WATER
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	Yes
Population Served	4367
County Served	Cowlitz

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	TTHM	2899070	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	2913615	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	10137062378	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	10137062996	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	10137062992	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	10137062991	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	10137062990	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	10137062989	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	10137062987	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	10137062985	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	10137062984	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	10137062983	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	10137062982	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	10137062981	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	10137062980	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	10137062979	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	10137062977	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	10137062976	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	10137062969	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	10137062968	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	10137062380	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	10137062964	Known	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	07982372380	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	07982372964	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	07982372968	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	07982372378	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	07982372996	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	07982372992	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	07982372991	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	07982372990	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	07982372989	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	07982372987	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	07982372985	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	07982372984	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	07982372983	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	07982372982	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	07982372981	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	07982372980	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	07982372979	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	07982372977	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	07982372976	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	07982372969	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	615320	Known	01-APR-2006	30-APR-2006	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	94V0001	Known	01-DEC-1994	31-DEC-1994	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	8050490	Known	01-OCT-1979	31-OCT-1979	No

1 - 45 of 45

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2913615ENF	2913615	SOX	State Compliance achieved	26-MAR-2024	State	-
2899070ENF	2899070	SOX	State Compliance achieved	26-MAR-2024	State	-
CM392	07982372992	SOX	State Compliance achieved	04-AUG-2009	State	-
CM402	07982372969	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372976	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372977	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372979	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372980	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372981	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372982	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372983	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372984	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372985	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372987	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372989	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372990	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372991	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372996	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372968	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372964	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372380	SOX	State Compliance achieved	01-JUL-2009	State	-
CM402	07982372378	SOX	State Compliance achieved	01-JUL-2009	State	-
7002	615320	SIA	State Violation/Reminder Notice	01-MAY-2006	State	-

1 - 23 of 23

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
Cowlitz River	10373	Yes	Intake	Surface water	Permanent	Active
Chlorine (141)	10379	Yes	Well	Ground water	Seasonal	Active
I-5 Point (142)	10378	Yes	Well	Ground water	Seasonal	Active
Pizza Parlor (144)	10377	Yes	Well	Ground water	Seasonal	Active
Pioneer (145)	10376	Yes	Well	Ground water	Seasonal	Active
OLD #2 (146) Sand Sucker	10375	Yes	Well	Ground water	Emergency	Active
OLD #1 (147)	10374	Yes	Well	Ground water	Emergency	Active
Pioneer (145)	4017	No	Treatment Plant	-	-	Active
Cowlitz River	4671	No	Treatment Plant	-	-	Active
Pizza Parlor (144)	4860	No	Treatment Plant	-	-	Active
Chlorine (141)	4861	No	Treatment Plant	-	-	Active

1 - 11 of 11

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
Pioneer (145)	4017	Hypochlorination, Post	Disinfection
Cowlitz River	4671	Gaseous Chlorination, Post	Disinfection
Cowlitz River	4671	Coagulation	Particulate removal
Cowlitz River	4671	Sedimentation	Particulate removal
Cowlitz River	4671	Filtration, Rapid Sand	Particulate removal
Cowlitz River	4671	Rapid Mix	Particulate removal
Cowlitz River	4671	Fluoridation	Other
Pizza Parlor (144)	4860	Hypochlorination, Post	Disinfection
Chlorine (141)	4861	Hypochlorination, Post	Disinfection

1 - 9 of 9

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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