Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OR4100985
PWS Name	HILLSBORO-CHERRY GROVE
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1628
County Served	Washington

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
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	902754819	Returned to Compliance	01-JUL-2025	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902754816	Returned to Compliance	01-JUL-2023	31-JUL-2023	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902754817	Returned to Compliance	01-JUL-2023	31-JUL-2023	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902754818	Returned to Compliance	01-JUL-2023	31-JUL-2023	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902754815	Returned to Compliance	01-AUG-2019	31-AUG-2019	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902754813	Returned to Compliance	01-AUG-2019	31-AUG-2019	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902754814	Returned to Compliance	01-AUG-2019	31-AUG-2019	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902754811	Returned to Compliance	01-OCT-2014	31-OCT-2014	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902754812	Returned to Compliance	01-OCT-2014	31-OCT-2014	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902754810	Returned to Compliance	01-OCT-2014	31-OCT-2014	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	2754811	Returned to Compliance	01-DEC-2009	31-DEC-2009	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	2754810	Returned to Compliance	01-DEC-2009	31-DEC-2009	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	2754812	Returned to Compliance	01-JAN-2009	31-JAN-2009	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	2754813	Returned to Compliance	01-JAN-2009	31-JAN-2009	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	#1	Returned to Compliance	01-JUL-2008	-	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	2753508	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	2753408	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	2753308	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	2753208	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	2753108	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	2753008	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	2752908	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	2753608	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	2753708	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	2753808	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	2753908	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	2754008	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	2754108	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	2754208	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	2754308	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	2754408	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	2754508	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	2754608	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	2752808	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	2752708	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	2752608	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2752408	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	2752508	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
TT	OCCT/SOWT Treatment Installation/Demonstration	Lead and Copper Rule	Lead and Copper Rule	410700	Returned to Compliance	02-JAN-2002	-	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	227800	Returned to Compliance	01-MAR-2000	31-MAR-2000	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	804097	Returned to Compliance	01-JUL-1998	-	Yes
TT	Failure to Filter (SWTR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2749992	Returned to Compliance	01-JAN-1992	01-OCT-1993	Yes
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	1649592	Known	01-NOV-1991	30-NOV-1991	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1649591	Returned to Compliance	01-NOV-1991	30-NOV-1991	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1384091	Returned to Compliance	01-JUL-1991	31-JUL-1991	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	6648580	Known	01-JUN-1976	31-MAY-1980	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	6648780	Known	01-JUN-1976	31-MAY-1980	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
8980414	902754819	SOX	State Compliance achieved	08-JUL-2025	State	-
8980413	902754816	SOX	State Compliance achieved	05-SEP-2023	State	-
8980413	902754818	SOX	State Compliance achieved	05-SEP-2023	State	-
8980413	902754817	SOX	State Compliance achieved	05-SEP-2023	State	-
8980412	902754815	SOX	State Compliance achieved	30-SEP-2019	State	-
8980412	902754813	SOX	State Compliance achieved	30-SEP-2019	State	-
8980412	902754814	SOX	State Compliance achieved	30-SEP-2019	State	-
8980411	902754810	SOX	State Compliance achieved	01-DEC-2014	State	-
8980411	902754812	SOX	State Compliance achieved	01-DEC-2014	State	-
8980411	902754811	SOX	State Compliance achieved	01-DEC-2014	State	-
8980409	2754813	SOX	State Compliance achieved	16-AUG-2010	State	-
8980409	2754812	SOX	State Compliance achieved	16-AUG-2010	State	-
8980410	2754811	SIA	State Violation/Reminder Notice	22-FEB-2010	State	-
8980410	2754810	SIA	State Violation/Reminder Notice	22-FEB-2010	State	-
#1	#1	EOX	Federal Compliance achieved	28-AUG-2008	ODSWeb	-
8980408	2752808	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2753108	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2753208	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2753308	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2753408	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2753508	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2753608	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2753708	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2753808	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2753908	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2754008	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2754108	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2754208	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2754308	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2754408	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2754508	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2754608	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2752708	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2752608	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2752508	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2752408	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2752908	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
8980408	2753008	SOX	State Compliance achieved	08-AUG-2008	State	samples recieved
6	2749992	SOX	State Compliance achieved	01-JAN-2007	State	-
1	1649591	SOX	State Compliance achieved	06-AUG-2001	State	-
3	1384091	SOX	State Compliance achieved	10-JUL-2001	State	-
8979901	410700	SOX	State Compliance achieved	11-DEC-2000	State	VALIDATED RTC'd Based on 3 subsequent rounds of sampling below the AL - DEEM - eh 6/8/05.
8980101	804097	SOX	State Compliance achieved	27-OCT-2000	State	VALIDATED Public notice was distributed in 1997 per contact report dated 2/8/00 - copy of notice recv'd via fax on 10/27/00 - eh 6/8/05.
8979801	227800	SOX	State Compliance achieved	17-AUG-2000	State	VALIDATED Reported received late for 3/00

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
UPPER TUALATIN R. - HAINES FALLS INTAKE	11753	Yes	Intake	Surface water	Permanent	Active
COMMON HEADER FOR WTP-A	19496	No	Common Headers	-	-	Active
DISTRIBUTION SYSTEM	7463	No	Distribution System/Zone	-	-	Active
EP FOR UPPER TUALATIN R. - HAINES FALLS	12326	No	Sampling Station	-	-	Active
TP FOR UPPER TUALATIN R. - HAINES FALLS	492	No	Treatment Plant	-	-	Active

1 - 5 of 5

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP FOR UPPER TUALATIN R. - HAINES FALLS	492	Innovative	Corrosion control
TP FOR UPPER TUALATIN R. - HAINES FALLS	492	Gaseous Chlorination, Post	Disinfection
TP FOR UPPER TUALATIN R. - HAINES FALLS	492	Filtration, Slow Sand	Particulate removal

1 - 3 of 3

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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