Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	TX0610040
PWS Name	BLACK ROCK WSC
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	1680
County Served	Denton

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	356	Open	01-JUL-2025	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	320	Returned to Compliance	01-SEP-2023	30-SEP-2023	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	215	Returned to Compliance	01-JAN-2021	-	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	344	Known	01-JAN-2021	31-DEC-2023	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	347	Known	01-JAN-2021	31-DEC-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	288	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	289	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	290	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	291	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	292	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	293	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	294	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	295	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	296	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	281	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	287	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	286	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	285	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	284	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	283	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	282	Known	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	248	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	254	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	263	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	257	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	240	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	269	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	268	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	253	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	252	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	251	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	247	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	246	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	245	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	244	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	267	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	266	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	243	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	265	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	260	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	259	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	249	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	261	Known	01-JAN-2019	31-DEC-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	211	Returned to Compliance	01-JUL-2016	30-SEP-2016	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	206	Returned to Compliance	30-DEC-2015	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	103	Returned to Compliance	01-JUL-2003	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	202	Returned to Compliance	01-JUL-2002	-	No

1 - 47 of 47

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
446	320	SIF	State Public Notification received	12-JUN-2024	State	-
414	215	SOX	State Compliance achieved	01-APR-2021	State	-
410	211	SIF	State Public Notification received	10-JAN-2017	State	-
405	206	SOX	State Compliance achieved	17-FEB-2016	State	-
304	202	SOX	State Compliance achieved	17-AUG-2004	State	CCR2001 - EPA POLICY EMAIL 8/5/04 ON RTC, RECENT CCR
204	103	SOX	State Compliance achieved	20-JUL-2004	State	CCR2002 - COMPLY

1 - 6 of 6

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
1 - S ROCK HILL RD	14689	Yes	Well	Ground water	Other	Inactive
4 - 7066 RHOADS RD	147223	Yes	Well	Ground water	Permanent	Active
2 - PR 2711	14690	Yes	Well	Ground water	Permanent	Active
3 - 5925 NEW HOPE RD	14664	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	39523	No	Distribution System/Zone	-	-	Active
PS 2 - 150 GPM - SP	121118	No	Pump Facility	-	-	Active
PS 2 - 150 GPM - SP	121124	No	Pump Facility	-	-	Active
PS 3 - 150 GPM - SP	121127	No	Pump Facility	-	-	Active
PS 3 - 150 GPM - SP	121130	No	Pump Facility	-	-	Active
PS 1 - 150 GPM - SP	121112	No	Pump Facility	-	-	Inactive
PS 1 - 150 GPM - SP	121116	No	Pump Facility	-	-	Inactive
WELL 2 - HARMON RD	134319	No	Sampling Station	-	-	Active
WELL 3 - 5901 NEW HOPE RD	134320	No	Sampling Station	-	-	Active
7066 RHOADS RD, DENTON	151796	No	Sampling Station	-	-	Active
7066 RHOADS RD, DENTON	151797	No	Sampling Station	-	-	Active
8871 HARMON RD, AUBREY	49969	No	Sampling Station	-	-	Active
WELL 3 - 5901 NEW HOPE RD	62324	No	Sampling Station	-	-	Active
WELL 1 - 917 ROCK HILL	134318	No	Sampling Station	-	-	Inactive
WELL 1 - 917 ROCK HILL	49968	No	Sampling Station	-	-	Inactive
PS 3 - 0.0045 MG - HD	121104	No	Storage	-	-	Active
PS 2 - 0.0045 MG - HD	121106	No	Storage	-	-	Active
PS 3 - 0.060 MG - GR	121110	No	Storage	-	-	Active
PS 2 - 0.028 MG - GR	128448	No	Storage	-	-	Active
7066 RHOADES RD - 0.25 MG - EL	151795	No	Storage	-	-	Active
PS 1 - 0.0015 MG - HD	121108	No	Storage	-	-	Inactive
PS 1 - 0.028 MG - GR	128447	No	Storage	-	-	Inactive
PLANT 4 - 7066 RHOADS RD	151793	No	Treatment Plant	-	-	Active
PLANT 2 - PR 2711	8998	No	Treatment Plant	-	-	Active
PLANT 3 - 5925 NEW HOPE RD	9043	No	Treatment Plant	-	-	Active
PLANT 1 - S ROCK HILL RD	8912	No	Treatment Plant	-	-	Inactive

1 - 30 of 30

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
PLANT 4 - 7066 RHOADS RD	151793	Gaseous Chlorination, Pre	Disinfection
PLANT 1 - S ROCK HILL RD	8912	Gaseous Chlorination, Pre	Disinfection
PLANT 2 - PR 2711	8998	Gaseous Chlorination, Pre	Disinfection
PLANT 3 - 5925 NEW HOPE RD	9043	Gaseous Chlorination, Pre	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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