Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CA2810001
PWS Name	HOWELL MOUNTAIN MUTUAL WATER COMPANY
PWS Type	Community water system
Owner Type	Private
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1240
County Served	Napa

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
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9403015	Returned to Compliance	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9403012	Returned to Compliance	01-APR-2021	30-JUN-2021	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	9403011	Returned to Compliance	01-OCT-2020	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9403009	Returned to Compliance	01-OCT-2016	31-DEC-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9403008	Returned to Compliance	01-JUL-2016	30-SEP-2016	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	9403007	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9403006	Returned to Compliance	01-JUL-2013	30-SEP-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9403005	Returned to Compliance	01-APR-2013	30-JUN-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1103040	Returned to Compliance	01-APR-2011	30-JUN-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1103039	Returned to Compliance	01-JAN-2011	31-MAR-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1103038	Returned to Compliance	01-JAN-2011	31-MAR-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1103036	Returned to Compliance	01-OCT-2010	31-DEC-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1103037	Returned to Compliance	01-OCT-2010	31-DEC-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1003034	Returned to Compliance	01-JUL-2010	30-SEP-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1003035	Returned to Compliance	01-JUL-2010	30-SEP-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1003032	Returned to Compliance	01-APR-2010	30-JUN-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1003033	Returned to Compliance	01-APR-2010	30-JUN-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1003030	Returned to Compliance	01-JAN-2010	31-MAR-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1003029	Returned to Compliance	01-JAN-2010	31-MAR-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1003031	Returned to Compliance	01-OCT-2009	31-DEC-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1003028	Returned to Compliance	01-OCT-2009	31-DEC-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	903019	Returned to Compliance	01-JUL-2009	30-SEP-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	903023	Returned to Compliance	01-JUL-2009	30-SEP-2009	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	903025	Returned to Compliance	01-JUL-2009	30-SEP-2009	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	903026	Returned to Compliance	01-JUL-2009	30-SEP-2009	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	903018	Returned to Compliance	01-APR-2009	30-JUN-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	903022	Returned to Compliance	01-APR-2009	30-JUN-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	903017	Returned to Compliance	01-JAN-2009	31-MAR-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	903021	Returned to Compliance	01-OCT-2008	31-DEC-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	903016	Returned to Compliance	01-OCT-2008	31-DEC-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	803020	Returned to Compliance	01-JUL-2008	30-SEP-2008	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	803027	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	803024	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	803015	Returned to Compliance	01-JUL-2008	30-SEP-2008	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	803013	Returned to Compliance	01-MAY-2008	31-MAY-2008	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	803014	Returned to Compliance	01-APR-2008	30-JUN-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	603010	Returned to Compliance	01-OCT-2005	31-DEC-2005	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	603011	Returned to Compliance	01-OCT-2005	31-DEC-2005	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	403008	Returned to Compliance	01-JAN-2005	31-MAR-2005	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	403009	Returned to Compliance	01-APR-2004	30-JUN-2004	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	9403004	Returned to Compliance	01-JAN-1994	31-JAN-1994	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	95V0001	Returned to Compliance	01-JUL-1993	01-MAR-2000	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	9303006	Returned to Compliance	01-JUN-1993	30-JUN-1993	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	9303005	Returned to Compliance	01-JUN-1993	30-JUN-1993	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	9303001	Returned to Compliance	01-MAY-1993	31-MAY-1993	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	9303002	Returned to Compliance	01-MAY-1993	31-MAY-1993	No
Other	Notification, Public	Miscellaneous Other Rules	-	8700810	Known	01-AUG-1987	31-AUG-1987	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
9503017	9403012	SOX	State Compliance achieved	31-DEC-2023	State	-
9503017	9403015	SOX	State Compliance achieved	31-DEC-2023	State	-
9503015	9403011	SOX	State Compliance achieved	30-SEP-2021	State	completed directives 1, 2 re monitoring.
9503012	9403007	SOX	State Compliance achieved	11-MAR-2018	State	-
9503011	9403009	SOX	State Compliance achieved	08-MAR-2018	State	-
9503011	9403008	SOX	State Compliance achieved	08-MAR-2018	State	-
9503009	903023	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	9403006	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	9403005	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1103040	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1103039	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1103038	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1103037	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1103036	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1003035	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1003034	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1003033	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	803014	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	803015	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	803020	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	803024	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	803027	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	903016	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	903017	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	903018	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	903019	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	903021	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	903022	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	903025	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	903026	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1003028	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1003029	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1003030	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1003031	SOX	State Compliance achieved	06-JUL-2016	State	-
9503009	1003032	SOX	State Compliance achieved	06-JUL-2016	State	-
903011	803013	SOX	State Compliance achieved	25-SEP-2008	State	ENF_NO:CIT020308C040;
1003014	403009	SOX	State Compliance achieved	09-FEB-2006	State	-
1003014	603010	SOX	State Compliance achieved	09-FEB-2006	State	-
1003014	603011	SOX	State Compliance achieved	09-FEB-2006	State	-
1003014	403008	SOX	State Compliance achieved	09-FEB-2006	State	-
00E0001	95V0001	EOX	Federal Compliance achieved	01-MAR-2000	ODSWeb	-
9503005	9403004	SOX	State Compliance achieved	04-OCT-1994	State	ENF_NO:02-03-94C-109;
9503006	9303006	SOX	State Compliance achieved	25-AUG-1993	State	ENF_NO:02-139;
9503006	9303005	SOX	State Compliance achieved	25-AUG-1993	State	ENF_NO:02-139;
9503006	9303002	SOX	State Compliance achieved	25-AUG-1993	State	ENF_NO:02-139;
9503006	9303001	SOX	State Compliance achieved	25-AUG-1993	State	ENF_NO:02-139;

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
LAKE INTAKE	29407	Yes	Intake	Surface water	Permanent	Active
WELL 02	24382	Yes	Well	Ground water	Seasonal	Active
WELL 01	24394	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	29406	No	Distribution System/Zone	-	-	Active
TREATMENT PLANT - HOWELL MOUNTAIN - TRTD	1729	No	Treatment Plant	-	-	Active
WELL 02 CHLORINATION FACILITY	35332	No	Treatment Plant	-	-	Active

1 - 6 of 6

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT - HOWELL MOUNTAIN - TRTD	1729	Rapid Mix	Particulate removal
TREATMENT PLANT - HOWELL MOUNTAIN - TRTD	1729	Permanganate	Taste / odor control
TREATMENT PLANT - HOWELL MOUNTAIN - TRTD	1729	Inhibitor, Orthophosphate	Corrosion control
TREATMENT PLANT - HOWELL MOUNTAIN - TRTD	1729	Hypochlorination, Post	Disinfection
TREATMENT PLANT - HOWELL MOUNTAIN - TRTD	1729	Filtration, Rapid Sand	Particulate removal
TREATMENT PLANT - HOWELL MOUNTAIN - TRTD	1729	Sedimentation	Particulate removal
TREATMENT PLANT - HOWELL MOUNTAIN - TRTD	1729	Flocculation	Particulate removal
TREATMENT PLANT - HOWELL MOUNTAIN - TRTD	1729	Coagulation	Particulate removal
TREATMENT PLANT - HOWELL MOUNTAIN - TRTD	1729	Hypochlorination, Pre	Disinfection
WELL 02 CHLORINATION FACILITY	35332	Hypochlorination, Post	Disinfection

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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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