Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CA4010012
PWS Name	HERITAGE RANCH CSD
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	2956
County Served	San Luis Obispo

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	Total Haloacetic Acids (HAA5)	9506019	Returned to Compliance	01-JAN-2024	31-MAR-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506018	Returned to Compliance	01-OCT-2023	31-DEC-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506017	Returned to Compliance	01-JUL-2023	30-SEP-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506015	Returned to Compliance	01-APR-2023	30-JUN-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9506016	Returned to Compliance	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506014	Returned to Compliance	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9506012	Returned to Compliance	01-OCT-2022	31-DEC-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506013	Returned to Compliance	01-OCT-2022	31-DEC-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506011	Returned to Compliance	01-JUL-2022	30-SEP-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506010	Returned to Compliance	01-APR-2022	30-JUN-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506008	Returned to Compliance	01-OCT-2020	31-DEC-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506007	Returned to Compliance	01-JUL-2020	30-SEP-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506006	Returned to Compliance	01-APR-2020	30-JUN-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506004	Returned to Compliance	01-JAN-2020	31-MAR-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9506003	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1206004	Returned to Compliance	01-JAN-2012	31-JAN-2012	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1106003	Returned to Compliance	01-OCT-2010	31-DEC-2010	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9506002	Returned to Compliance	01-APR-1995	30-APR-1995	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	9306001	Returned to Compliance	01-JUL-1993	31-JUL-1993	Yes

1 - 19 of 19

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9906039	9506014	SOX	State Compliance achieved	19-JUN-2024	State	06_23C_018 06_23C_028 06_24C_004 06_24C_017
9906039	9506015	SOX	State Compliance achieved	19-JUN-2024	State	06_23C_018 06_23C_028 06_24C_004 06_24C_017
9906039	9506016	SOX	State Compliance achieved	19-JUN-2024	State	06_23C_018 06_23C_028 06_24C_004 06_24C_017
9906039	9506017	SOX	State Compliance achieved	19-JUN-2024	State	06_23C_018 06_23C_028 06_24C_004 06_24C_017
9906039	9506019	SOX	State Compliance achieved	19-JUN-2024	State	06_23C_018 06_23C_028 06_24C_004 06_24C_017
9906039	9506018	SOX	State Compliance achieved	19-JUN-2024	State	06_23C_018 06_23C_028 06_24C_004 06_24C_017
9906034	9506012	SOX	State Compliance achieved	19-JUL-2023	State	Stage 2 TTHM exceedances: Wood Duck Ln & Egret Ln LRAA=83. HAA5 exceedances: Wood Duck Ln & Egret Ln LRAA=105, Black Horse Ln & Heritage Rd LRAA=84.
9906034	9506013	SOX	State Compliance achieved	19-JUL-2023	State	Stage 2 TTHM exceedances: Wood Duck Ln & Egret Ln LRAA=83. HAA5 exceedances: Wood Duck Ln & Egret Ln LRAA=105, Black Horse Ln & Heritage Rd LRAA=84.
9906033	9506011	SOX	State Compliance achieved	19-JUL-2023	State	Stage 2 HAA5 exceedances: Wood Duck Ln & Egret Ln LRAA=93; Black Horse Ln & Heritage Rd LRAA=77.
9906031	9506008	SOX	State Compliance achieved	19-JUL-2023	State	Stage 2 HAA5 exceedances: Wood Duck Ln & Egret Ln LRAA=74; Black Horse Ln & Heritage Rd LRAA=68.
9906030	9506007	SOX	State Compliance achieved	19-JUL-2023	State	Stage 2 HAA5 exceedances: Wood Duck Ln & Egret Ln LRAA=68; Black Horse Ln & Heritage Rd LRAA=79.
9906029	9506006	SOX	State Compliance achieved	19-JUL-2023	State	Stage 2 HAA5 exceedances: Wood Duck Ln & Egret Ln LRAA=67; Black Horse Ln & Heritage Rd LRAA=78.
9906027	9506003	SOX	State Compliance achieved	19-JUL-2023	State	Stage 2 HAA5 OEL & LRAA exceedances: Black Horse LN & Heritage RD OEL=78 ;LRAA=67.
9906028	9506004	SOX	State Compliance achieved	19-JUL-2023	State	Stage 2 HAA5 & OEL exceedances. Black Horse LN - OEL = 81 ppb; LRAA = 70 ppb.
9906032	9506010	SOX	State Compliance achieved	19-JUL-2023	State	Stage 2 HAA5 exceedances: Wood Duck Ln & Egret Ln LRAA=83; Black Horse Ln & Heritage Rd LRAA=75.
9906014	1206004	SOX	State Compliance achieved	29-FEB-2012	State	This TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
9906013	1106003	SOX	State Compliance achieved	01-APR-2011	State	-
9506011	9506002	SOX	State Compliance achieved	16-MAY-1995	State	BACTI. SAMPLES PROCEDURAL FAILURE
9506009	9306001	SOX	State Compliance achieved	29-MAY-1991	State	-

1 - 19 of 19

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
PS 1 (COMBINED WELL 01 SOURCES)	13301	Yes	Infiltration Gallery	Surface water	Permanent	Active
VERTICAL INTAKE 2	75084	Yes	Infiltration Gallery	Surface water	Permanent	Active
VERTICAL INTAKE 1	75083	Yes	Infiltration Gallery	Surface water	Permanent	Active
HORIZONTAL GALLERY WELLS	75082	Yes	Infiltration Gallery	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	31340	No	Distribution System/Zone	-	-	Active
WELL 01 - TRT CL	272	No	Treatment Plant	-	-	Active
TREATMENT PLANT EFFLUENT	273	No	Treatment Plant	-	-	Active

1 - 7 of 7

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL 01 - TRT CL	272	Hypochlorination, Post	Disinfection
TREATMENT PLANT EFFLUENT	273	Hypochlorination, Post	Disinfection
TREATMENT PLANT EFFLUENT	273	Filtration, Rapid Sand	Particulate removal
TREATMENT PLANT EFFLUENT	273	Flocculation	Particulate removal

1 - 4 of 4

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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