Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CO0112300
PWS Name	COSTILLA COUNTY WS
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	561
County Served	Costilla

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 and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4002435	Returned to Compliance	01-JAN-2022	31-DEC-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4002436	Returned to Compliance	01-JAN-2022	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	4002434	Returned to Compliance	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	4002432	Returned to Compliance	01-OCT-2016	31-DEC-2016	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	4002431	Returned to Compliance	01-OCT-2016	31-DEC-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	4002412	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	4002411	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	4002410	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	4002430	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	4002429	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	4002428	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	4002427	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	4002426	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	4002425	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	4002424	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	4002423	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	4002422	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	4002421	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	4002420	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	4002419	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	4002418	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	4002417	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	4002416	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	4002415	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	4002414	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	4002413	Returned to Compliance	01-APR-2016	30-JUN-2016	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	4002409	Returned to Compliance	01-JAN-2016	31-MAR-2016	No
TT	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Lead and Copper Rule	4002407	Returned to Compliance	01-JUL-2006	-	Yes
MR	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	Lead and Copper Rule	4002307	Returned to Compliance	01-JUL-2006	-	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	4002207	Returned to Compliance	01-JUL-2006	31-DEC-2006	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	4001202	Returned to Compliance	01-JUL-2002	31-JUL-2002	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1001602	Returned to Compliance	01-OCT-2001	31-OCT-2001	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	2002000	Returned to Compliance	01-JAN-2000	31-JAN-2000	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2000896	Returned to Compliance	01-FEB-1996	29-FEB-1996	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2903295	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	3900596	Returned to Compliance	01-JAN-1992	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	9038091	Known	01-JAN-1991	31-MAR-1991	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	9038491	Known	01-JAN-1991	31-MAR-1991	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	9038291	Known	01-JAN-1991	31-MAR-1991	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	9038391	Known	01-JAN-1991	31-MAR-1991	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	9037991	Known	01-JAN-1991	31-MAR-1991	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	9038591	Known	01-JAN-1991	31-MAR-1991	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	9038191	Known	01-JAN-1991	31-MAR-1991	No

1 - 43 of 43

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
4030729	4002435	SOX	State Compliance achieved	09-AUG-2023	State	RTC with 3Q2023 compliant sample
4030729	4002436	SOX	State Compliance achieved	09-AUG-2023	State	RTC with 3Q2023 compliant sample
4030726	4002434	SOX	State Compliance achieved	20-JAN-2021	State	-
4030719	4002432	SOX	State Compliance achieved	13-NOV-2017	State	RTC when reported 4Q2016 rads data late. ejc
4030719	4002431	SOX	State Compliance achieved	13-NOV-2017	State	RTC when reported 4Q2016 rads data late. ejc
4030720	4002409	SOX	State Compliance achieved	13-NOV-2017	State	RTC with next quarter's sampling. ejc
4030714	4002415	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002430	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002429	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002428	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002427	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002426	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002425	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002424	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002423	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002422	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002421	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002420	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002419	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002418	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002417	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002416	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002410	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002411	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002412	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002413	SOX	State Compliance achieved	16-SEP-2016	State	-
4030714	4002414	SOX	State Compliance achieved	16-SEP-2016	State	-
4030709	4002207	SOX	State Compliance achieved	25-AUG-2008	State	Actively participating in corrosion control study.
4030709	4002407	SOX	State Compliance achieved	25-AUG-2008	State	Actively participating in corrosion control study.
4030709	4002307	SOX	State Compliance achieved	25-AUG-2008	State	Actively participating in corrosion control study.
4030708	1001602	SOX	State Compliance achieved	04-APR-2008	State	>6 mo wo violations. SOXd. aj
4030708	2000896	SOX	State Compliance achieved	04-APR-2008	State	>6 mo wo violations. SOXd. aj
4030708	2002000	SOX	State Compliance achieved	04-APR-2008	State	>6 mo wo violations. SOXd. aj
4030708	4001202	SOX	State Compliance achieved	04-APR-2008	State	>6 mo wo violations. SOXd. aj
2930398	3900596	SOX	State Compliance achieved	29-APR-1996	State	-
295	2903295	EOX	Federal Compliance achieved	30-MAR-1995	ODSWeb	-
9010991	9038191	SFJ	State Formal Notice of Violation issued	26-JUN-1991	State	COSTILLA CO W&SD VOC FTM
9010991	9038091	SFJ	State Formal Notice of Violation issued	26-JUN-1991	State	COSTILLA CO W&SD VOC FTM
9010991	9037991	SFJ	State Formal Notice of Violation issued	26-JUN-1991	State	COSTILLA CO W&SD VOC FTM
9010991	9038491	SFJ	State Formal Notice of Violation issued	26-JUN-1991	State	COSTILLA CO W&SD VOC FTM
9010991	9038391	SFJ	State Formal Notice of Violation issued	26-JUN-1991	State	COSTILLA CO W&SD VOC FTM
9010991	9038591	SFJ	State Formal Notice of Violation issued	26-JUN-1991	State	COSTILLA CO W&SD VOC FTM
9010991	9038291	SFJ	State Formal Notice of Violation issued	26-JUN-1991	State	COSTILLA CO W&SD VOC FTM

1 - 43 of 43

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
LOS FUERTES WELL	1769	Yes	Well	Ground water	Emergency	Active
VIEJO SAN ACACIO WELL	1770	Yes	Well	Ground water	Permanent	Inactive
LOS FUERTES WELL NO 2	21352	Yes	Well	Ground water	Permanent	Active
CHAMA WELL	1768	Yes	Well	Ground water	Permanent	Active
LA VALLEY WELL	1767	Yes	Well	Ground water	Permanent	Active
CHAMA WELL NO 2	20606	Yes	Well	Ground water	Emergency	Active
DISTRIBUTION SYSTEM	6555	No	Distribution System/Zone	-	-	Active
CHAMA BACKUP PUMP STATION	18544	No	Pump Facility	-	-	Inactive
LA VALLEY TANK	15215	No	Storage	-	-	Active
CHAMA TANK	15216	No	Storage	-	-	Active
LOS FUERTES TANK	15217	No	Storage	-	-	Active
LA VALLEY TANK NO 2	20607	No	Storage	-	-	Active
VIEJO SAN ACACIO TANK	15218	No	Storage	-	-	Inactive
LA VALLEY CHLORINATOR	15209	No	Treatment Plant	-	-	Active
CHAMA CHLORINATOR	15210	No	Treatment Plant	-	-	Active
LOS FUERTES CHLORINATOR	15211	No	Treatment Plant	-	-	Active
CHAMA WELL NO 2 CHLORINATOR	21372	No	Treatment Plant	-	-	Active
VIEJO SAN ACACIO CHLORINATOR	15212	No	Treatment Plant	-	-	Inactive

1 - 18 of 18

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
LA VALLEY CHLORINATOR	15209	Innovative	Disinfection
LA VALLEY CHLORINATOR	15209	Hypochlorination, Post	Disinfection
CHAMA CHLORINATOR	15210	Innovative	Disinfection
CHAMA CHLORINATOR	15210	Hypochlorination, Post	Disinfection
LOS FUERTES CHLORINATOR	15211	Innovative	Disinfection
LOS FUERTES CHLORINATOR	15211	Hypochlorination, Post	Disinfection
VIEJO SAN ACACIO CHLORINATOR	15212	Hypochlorination, Post	Disinfection
CHAMA WELL NO 2 CHLORINATOR	21372	Hypochlorination, Post	Disinfection

1 - 8 of 8

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.

Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Nav Menu

Your Drinking Water Query results from SDWIS Fed Reporting Services

Note

PWS Violation

Violations

Column Actions

Enforcement Actions

Enforcement Actions

Column Actions

PWS Facilities

All Facilities

Column Actions

PWS Treatment Processes

Treatment Processes

Column Actions