Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OR4100493
PWS Name	LYONS MEHAMA WATER DISTRICT
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1300
County Served	Linn

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 of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755321	Returned to Compliance	01-AUG-2025	31-AUG-2025	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902755322	Returned to Compliance	01-AUG-2025	31-AUG-2025	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755320	Returned to Compliance	01-AUG-2025	31-AUG-2025	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	902755319	Returned to Compliance	01-JUL-2025	-	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	902755323	Returned to Compliance	01-JUL-2025	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902755317	Returned to Compliance	01-APR-2025	30-APR-2025	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755315	Returned to Compliance	01-APR-2025	30-APR-2025	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755316	Returned to Compliance	01-APR-2025	30-APR-2025	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755311	Returned to Compliance	01-FEB-2025	28-FEB-2025	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902755312	Returned to Compliance	01-FEB-2025	28-FEB-2025	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755313	Returned to Compliance	01-FEB-2025	28-FEB-2025	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	902755310	Returned to Compliance	01-FEB-2025	28-FEB-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	902755324	Known	01-JAN-2025	31-DEC-2025	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	902755314	Returned to Compliance	01-JAN-2025	-	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	902755318	Returned to Compliance	01-JAN-2025	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	902755325	Known	01-JAN-2025	31-DEC-2025	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755307	Returned to Compliance	01-DEC-2024	31-DEC-2024	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902755308	Returned to Compliance	01-DEC-2024	31-DEC-2024	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755306	Returned to Compliance	01-DEC-2024	31-DEC-2024	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755303	Returned to Compliance	01-NOV-2024	30-NOV-2024	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902755305	Returned to Compliance	01-NOV-2024	30-NOV-2024	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755304	Returned to Compliance	01-NOV-2024	30-NOV-2024	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	902755301	Returned to Compliance	01-OCT-2024	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	902755302	Returned to Compliance	01-OCT-2024	-	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	902755309	Returned to Compliance	01-JUL-2024	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	902755300	Returned to Compliance	01-JUL-2024	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755297	Returned to Compliance	01-JAN-2024	31-JAN-2024	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	902755296	Returned to Compliance	01-JAN-2024	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902755298	Returned to Compliance	01-JAN-2024	31-JAN-2024	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755299	Returned to Compliance	01-JAN-2024	31-JAN-2024	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755292	Returned to Compliance	01-DEC-2023	31-DEC-2023	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902755294	Returned to Compliance	01-DEC-2023	31-DEC-2023	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755293	Returned to Compliance	01-DEC-2023	31-DEC-2023	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	902755286	Returned to Compliance	01-OCT-2023	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755287	Returned to Compliance	01-SEP-2023	30-SEP-2023	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755288	Returned to Compliance	01-SEP-2023	30-SEP-2023	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902755289	Returned to Compliance	01-SEP-2023	30-SEP-2023	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755282	Returned to Compliance	01-AUG-2023	31-AUG-2023	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902755284	Returned to Compliance	01-AUG-2023	31-AUG-2023	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755283	Returned to Compliance	01-AUG-2023	31-AUG-2023	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	902755290	Returned to Compliance	01-JUL-2023	-	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	902755291	Returned to Compliance	01-JUL-2023	-	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	902755285	Returned to Compliance	01-JUL-2023	-	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	902755295	Returned to Compliance	01-JUL-2023	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	902755281	Returned to Compliance	01-JUL-2023	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755277	Returned to Compliance	01-MAY-2023	31-MAY-2023	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	902755279	Returned to Compliance	01-MAY-2023	31-MAY-2023	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755278	Returned to Compliance	01-MAY-2023	31-MAY-2023	No
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	902755280	Returned to Compliance	01-JAN-2023	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	902755273	Returned to Compliance	01-OCT-2020	31-OCT-2020	No

1 - 50 of 180

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9391404	902755322	SOX	State Compliance achieved	01-OCT-2025	State	-
9391404	902755320	SOX	State Compliance achieved	01-OCT-2025	State	-
9391401	902755323	SOX	State Compliance achieved	01-OCT-2025	State	-
9391404	902755321	SOX	State Compliance achieved	01-OCT-2025	State	-
9391403	902755301	SOX	State Compliance achieved	29-SEP-2025	State	-
9391402	902755319	SOX	State Compliance achieved	19-SEP-2025	State	-
9391400	902755317	SOX	State Compliance achieved	03-JUN-2025	State	-
9391400	902755316	SOX	State Compliance achieved	03-JUN-2025	State	-
9391400	902755315	SOX	State Compliance achieved	03-JUN-2025	State	-
9391399	902755318	SOX	State Compliance achieved	03-JUN-2025	State	-
9391397	902755314	SOX	State Compliance achieved	31-MAR-2025	State	-
9391398	902755312	SOX	State Compliance achieved	31-MAR-2025	State	-
9391398	902755311	SOX	State Compliance achieved	31-MAR-2025	State	-
9391398	902755313	SOX	State Compliance achieved	31-MAR-2025	State	-
9391396	902755310	SOX	State Compliance achieved	25-MAR-2025	State	-
9391393	902755309	SOX	State Compliance achieved	10-FEB-2025	State	-
9391395	902755308	SOX	State Compliance achieved	10-FEB-2025	State	-
9391395	902755307	SOX	State Compliance achieved	10-FEB-2025	State	-
9391395	902755306	SOX	State Compliance achieved	10-FEB-2025	State	-
9391395	902755305	SOX	State Compliance achieved	10-FEB-2025	State	-
9391395	902755304	SOX	State Compliance achieved	10-FEB-2025	State	-
9391395	902755303	SOX	State Compliance achieved	10-FEB-2025	State	-
9391391	902755300	SOX	State Compliance achieved	22-OCT-2024	State	-
9391392	902755302	SOX	State Compliance achieved	22-OCT-2024	State	-
9391389	902755286	SOX	State Compliance achieved	10-APR-2024	State	-
9391389	902755281	SOX	State Compliance achieved	10-APR-2024	State	-
9391388	902755295	SOX	State Compliance achieved	08-MAR-2024	State	-
9391388	902755296	SOX	State Compliance achieved	08-MAR-2024	State	-
9391390	902755298	SOX	State Compliance achieved	08-MAR-2024	State	-
9391390	902755299	SOX	State Compliance achieved	08-MAR-2024	State	-
9391390	902755294	SOX	State Compliance achieved	08-MAR-2024	State	-
9391390	902755293	SOX	State Compliance achieved	08-MAR-2024	State	-
9391390	902755292	SOX	State Compliance achieved	08-MAR-2024	State	-
9391388	902755291	SOX	State Compliance achieved	08-MAR-2024	State	-
9391390	902755297	SOX	State Compliance achieved	08-MAR-2024	State	-
9391386	902755283	SOX	State Compliance achieved	09-NOV-2023	State	-
9391386	902755289	SOX	State Compliance achieved	09-NOV-2023	State	-
9391386	902755288	SOX	State Compliance achieved	09-NOV-2023	State	-
9391386	902755287	SOX	State Compliance achieved	09-NOV-2023	State	-
9391386	902755282	SOX	State Compliance achieved	09-NOV-2023	State	-
9391385	902755290	SOX	State Compliance achieved	09-NOV-2023	State	-
9391386	902755284	SOX	State Compliance achieved	09-NOV-2023	State	-
9391385	902755285	SOX	State Compliance achieved	09-NOV-2023	State	-
9391383	902755280	SOX	State Compliance achieved	10-JUL-2023	State	-
9391384	902755279	SOX	State Compliance achieved	10-JUL-2023	State	-
9391384	902755278	SOX	State Compliance achieved	10-JUL-2023	State	-
9391384	902755277	SOX	State Compliance achieved	10-JUL-2023	State	-
9391382	902755273	SOX	State Compliance achieved	04-DEC-2020	State	-
9391381	902755276	SOX	State Compliance achieved	04-DEC-2020	State	-
9391382	902755275	SOX	State Compliance achieved	04-DEC-2020	State	-

1 - 50 of 176

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
NORTH SANTIAM RIVER	11709	Yes	Intake	Surface water	Permanent	Active
COMMON HEADER FOR WTP-A	19250	No	Common Headers	-	-	Active
Distribution System	7097	No	Distribution System/Zone	-	-	Active
EP for NORTH SANTIAM RIVER	15432	No	Sampling Station	-	-	Active
TP FOR NORTH SANTIAM RIVER	238	No	Treatment Plant	-	-	Active

1 - 5 of 5

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP FOR NORTH SANTIAM RIVER	238	Innovative	Corrosion control
TP FOR NORTH SANTIAM RIVER	238	Gaseous Chlorination, Post	Disinfection
TP FOR NORTH SANTIAM RIVER	238	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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