Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	090605047
PWS Name	Colusa Southern System
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Ground water
Primacy Type	Tribal
Is Wholesaler?	No
Population Served	3474
County Served

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	060504771700072005	Returned to Compliance	01-JUL-2005	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	060504771700072004	Returned to Compliance	01-JUL-2004	-	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	060504703299612004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	060504703299212004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	060504703299112004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	060504703299012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	060504703298912004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	060504703298712004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	060504703298512004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	060504703298412004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	060504703298312004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	060504703298212004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	060504703298112004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	060504703298012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	060504703297912004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	060504703297712004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	060504703297612004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	060504703296912004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	060504703296812004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	060504703296412004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	060504703295912004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	060504703295512004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	060504727295012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	060504703238012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	060504703237812004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	060504703232612004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	060504703230612004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	060504703227412004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	060504703104012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	060504703211012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	060504703210512004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	060504703238312004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	060504703206712004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	060504703206512004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,3,7,8-TCDD	060504703206312004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	060504703205112004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	060504703205012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	060504703204612004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	060504703204212004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	060504703204112004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	060504703204012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	060504703203912004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	060504703203712004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	060504703203612004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	060504703203512004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	060504703203412004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	060504703203312004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	060504703203212004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	060504703203112004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	060504703202012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No

1 - 50 of 147

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
0605047OX01211044151	060504703100512001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044152	060504703101012001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044153	060504703101512001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044154	060504703102012001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044155	060504703102412001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044156	060504703102512001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044157	060504703103512001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044150	060504703104012001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044158	060504703104512001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044159	060504703107412001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044160	060504703107512001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044161	060504703108512001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044223	060504703109411996	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044234	060504703200512001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044125	060504703200512004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044193	060504703201011996	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044235	060504703201012001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044128	060504703201012004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044137	060504703201511996	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044236	060504703201512001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044218	060504703201512004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044230	060504703202011996	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044237	060504703202012001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044203	060504703202012004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044238	060504703203112001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044221	060504703203112004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044239	060504703203212001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044201	060504703203212004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044240	060504703203312001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044138	060504703203312004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044241	060504703203412001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044145	060504703203412004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044242	060504703203512001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044224	060504703203512004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044243	060504703203612001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044126	060504703203612004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044244	060504703203712001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044215	060504703203712004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044245	060504703203912001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044143	060504703203912004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044246	060504703204012001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044227	060504703204012004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044247	060504703204112001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044136	060504703204112004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044248	060504703204212001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044187	060504703204212004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044222	060504703204611996	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044249	060504703204612001	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044233	060504703204612004	EOX	Federal Compliance achieved	21-JAN-2010	Region	-
0605047OX01211044208	060504703205011996	EOX	Federal Compliance achieved	21-JAN-2010	Region	-

1 - 50 of 147

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
Well 4	0605047GW004	Yes	Well	Ground water	Emergency	Active
Well 2	0605047GW002	Yes	Well	Ground water	Permanent	Active
Well 1	0605047GW001	Yes	Well	Ground water	Permanent	Active
Well 6	0605047GW006	Yes	Well	Ground water	Other	Inactive
Well 5	0605047GW005	Yes	Well	Ground water	Emergency	Inactive
Well 3	0605047GW003	Yes	Well	Ground water	Emergency	Inactive
Entry Point forTP002 (wells 1 and 2)	0605047EP001	No	Common Headers	-	-	Active
Entry point for Well 4	0605047EP002	No	Common Headers	-	-	Active
Entry Point for Well 6 Emergency Use only	0605047EP003	No	Common Headers	-	-	Inactive
Entry Point for Well 5	0605047EP004	No	Common Headers	-	-	Inactive
Entry point for Well 3	0605047EP005	No	Common Headers	-	-	Inactive
Commercial Distribution System	0605047DS001	No	Distribution System/Zone	-	-	Active
Community Distribution System	0605047DS002	No	Distribution System/Zone	-	-	Active
Common Header for Wells 1 and 2	0605047CH001	No	Other	-	-	Active
Common Header for Emergency Wells 4 & 5	0605047CH002	No	Other	-	-	Inactive
Pressure Control Assembly	0605047HP001	No	Pressure Control	-	-	Active
Pumping Facility (RO)	0605047PF001	No	Pump Facility	-	-	Active
Pumping Facility (community)	0605047PF002	No	Pump Facility	-	-	Active
Storage Tank 1	0605047ST001	No	Storage	-	-	Active
Storage Tank 2	0605047ST002	No	Storage	-	-	Active
Storage Tank 4	0605047ST004	No	Storage	-	-	Active
Storage Tank 3	0605047ST003	No	Storage	-	-	Inactive
Reverse Osmosis Facility (wells 1 and 2)	0605047TP002	No	Treatment Plant	-	-	Active
disinfection for emergency wells 4	0605047TP001	No	Treatment Plant	-	-	Inactive
Disinfection for Emergency Well 6	0605047TP003	No	Treatment Plant	-	-	Inactive

1 - 25 of 25

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
disinfection for emergency wells 4	0605047TP001	Hypochlorination, Post	Disinfection
Reverse Osmosis Facility (wells 1 and 2)	0605047TP002	Reverse Osmosis	Softening (hardness removal)
Reverse Osmosis Facility (wells 1 and 2)	0605047TP002	Hypochlorination, Post	Disinfection
Disinfection for Emergency Well 6	0605047TP003	Hypochlorination, Post	Disinfection

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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