TX0610099 · Texas

HIDDEN VALLEY WATER SYSTEM

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown: 28
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 27

Counties listed by EPA · Denton County, Texas

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 2 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 59.5 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 72 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2026 · EPA return-to-compliance field March 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
22	June 28, 2024	Informal	State Violation/Reminder Notice
23	June 28, 2024	Informal	State Public Notification requested
24	September 13, 2024	Resolving	State Compliance achieved
32	April 28, 2025	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, E. coli (RTCR)Violation 17 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2022 · period end November 30, 2022 · first reported January 18, 2023 · EPA return-to-compliance field November 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1	November 17, 2022	Informal	State Boil Water Order
2	November 17, 2022	Informal	State Violation/Reminder Notice
3	November 17, 2022	Informal	State Public Notification requested
4	November 17, 2022	Informal	State Public Notification received
11	January 13, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Archived
Monitoring, RegularViolation 70 · Selenium · Inorganic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 68 · Thallium, Total · Inorganic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 67 · Beryllium, Total · Inorganic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 66 · Antimony, Total · Inorganic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 64 · Mercury · Inorganic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 61 · Chromium · Inorganic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 60 · Cadmium · Inorganic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 59 · Barium · Inorganic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 58 · Arsenic · Arsenic Rule
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 56 · Chlordane · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 55 · Pentachlorophenol · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 54 · Benzo(a)pyrene · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 53 · HEXACHLOROBENZENE · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 52 · Heptachlor epoxide · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 51 · Heptachlor · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 50 · LASSO · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 49 · Atrazine · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 48 · Hexachlorocyclopentadiene · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 47 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 46 · Simazine · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 45 · Di(2-ethylhexyl) adipate · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 44 · Toxaphene · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 43 · Methoxychlor · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 42 · BHC-GAMMA · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 41 · Endrin · Synthetic Organic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 40 · CYANIDE · Inorganic Chemicals
Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported May 16, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.

EPA data and scope

How to read the records

The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.

We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.

EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility