Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OR4100660
PWS Name	WEST SLOPE WATER DISTRICT
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	11000
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	900603729	Returned to Compliance	01-JUL-2023	-	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	900603723	Returned to Compliance	11-MAR-2018	-	Yes
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	900603724	Returned to Compliance	01-MAR-2018	31-MAR-2018	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	900603722	Returned to Compliance	01-SEP-2017	30-SEP-2017	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	900603721	Returned to Compliance	01-AUG-2017	31-AUG-2017	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	900603718	Returned to Compliance	01-SEP-2013	30-SEP-2013	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	900603717	Returned to Compliance	01-AUG-2013	31-AUG-2013	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	900603715	Returned to Compliance	01-APR-2013	30-APR-2013	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	900603712	Returned to Compliance	01-OCT-2011	31-OCT-2011	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	603712	Returned to Compliance	01-OCT-2010	31-OCT-2010	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	603608	Returned to Compliance	01-APR-2008	30-APR-2008	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	603508	Returned to Compliance	01-SEP-2007	30-SEP-2007	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	603407	Returned to Compliance	01-NOV-2006	30-NOV-2006	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	603206	Returned to Compliance	01-APR-2006	30-APR-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	603104	Returned to Compliance	01-MAR-2004	31-MAR-2004	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	603004	Returned to Compliance	01-NOV-2003	30-NOV-2003	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	431801	Returned to Compliance	01-SEP-2001	30-SEP-2001	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	545296	Returned to Compliance	01-SEP-1996	30-SEP-1996	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	34996	Returned to Compliance	01-NOV-1995	30-NOV-1995	Yes
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	597995	Returned to Compliance	01-SEP-1995	30-SEP-1995	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	4095	Returned to Compliance	01-OCT-1994	31-OCT-1994	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	602794	Returned to Compliance	01-SEP-1994	30-SEP-1994	No

1 - 22 of 22

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
35	900603729	SOX	State Compliance achieved	28-JUN-2024	State	-
34	900603724	SOX	State Compliance achieved	02-MAY-2018	State	-
33	900603723	SOX	State Compliance achieved	21-MAR-2018	State	-
31	900603722	SOX	State Compliance achieved	27-OCT-2017	State	-
32	900603721	SOX	State Compliance achieved	27-OCT-2017	State	-
28	900603718	SOX	State Compliance achieved	07-NOV-2013	State	-
27	900603717	SOX	State Compliance achieved	07-NOV-2013	State	-
26	900603715	SOX	State Compliance achieved	04-JUN-2013	State	-
20	900603712	SOX	State Compliance achieved	07-DEC-2011	State	-
18	603712	SOX	State Compliance achieved	02-DEC-2010	State	-
9	603608	SOX	State Compliance achieved	03-JUN-2008	State	-
8	603508	SOX	State Compliance achieved	07-NOV-2007	State	-
7	603407	SOX	State Compliance achieved	03-JAN-2007	State	-
6	603206	SOX	State Compliance achieved	10-JUL-2006	State	-
5	603104	SOX	State Compliance achieved	04-MAY-2004	State	-
4	603004	SOX	State Compliance achieved	09-JAN-2004	State	-
1	431801	SOX	State Compliance achieved	08-NOV-2001	State	-
14	4095	SOX	State Compliance achieved	03-AUG-2001	State	-
13	34996	SOX	State Compliance achieved	03-AUG-2001	State	-
2	545296	SOX	State Compliance achieved	03-AUG-2001	State	-
10	597995	SOX	State Compliance achieved	03-AUG-2001	State	-
3	602794	SOX	State Compliance achieved	03-AUG-2001	State	-

1 - 22 of 22

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
TUALATIN VALLEY WD (00665)	26219	Yes	Consecutive Connection	Surface water	Emergency	Inactive
PORTLAND WATER BUREAU (00657)	11940	Yes	Consecutive Connection	Surface water	Permanent	Active
Distribution System	7222	No	Distribution System/Zone	-	-	Active
EP FOR PORTLAND WATER BUREAU	12342	No	Sampling Station	-	-	Active
EP FOR TUALATIN VALLEY WD	26220	No	Sampling Station	-	-	Inactive

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Treatment Processes

No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.

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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