Utility · TX1600001
CITY OF MASON
CITY OF MASON (PWSID TX1600001) is an active community water system in Texas serving about 2,228 people through roughly 1,327 service connections. Its primary source is listed as groundwater (wells). Cities/areas associated with this system in EPA geographic data: Mason. In recent EPA records indexed here, we found 19 violation record(s), including 12 health-based and 2 still listed as addressed/unaddressed (not fully resolved). This page summarizes public EPA SDWA/ECHO data for educational purposes. It is not a substitute for your utility’s official Consumer Confidence Report or public notices.
System facts
- PWSID: TX1600001
- Type: Community water system (active)
- Primary source: Groundwater (wells)
- Owner type: Local government
- Wholesaler flag: No
- Phone (EPA record): 325-347-6449
- Address (EPA record): PO BOX 68, Mason 76856
Recent violation records (indexed subset)
Showing up to 40 recent violation identities (2021+ when dated), deduplicated from SDWA_VIOLATIONS_ENFORCEMENT. Status meanings come from EPA’s data dictionary (Resolved / Addressed / Unaddressed / Archived).
| Begin | Contaminant / issue | Violation | Category | Health-based | Status | Result / MCL |
|---|---|---|---|---|---|---|
| 12/30/2025 | Lead and Copper Rule | Lead Consumer Notice | MR | No | Resolved | — / MCL TT |
| 11/27/2024 | E. COLI | Monitoring, Source Water (GWR) | MR | No | Resolved | — / MCL 0 |
| 10/01/2022 | Gross Alpha, Excl. Radon and U | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | 16 PCI/L / MCL 15 pCi/L |
| 10/01/2021 | Combined Radium (-226 and -228) | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | 6 PCI/L / MCL 5 pCi/L |
| 07/01/2025 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | Other | No | Resolved | — / MCL |
| 07/01/2022 | Lead and Copper Rule | Water Quality Parameter M/R | MR | No | Resolved | — / MCL TT |
| 07/01/2021 | Combined Radium (-226 and -228) | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | 6 PCI/L / MCL 5 pCi/L |
| 07/01/2021 | Gross Alpha, Excl. Radon and U | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | 18 PCI/L / MCL 15 pCi/L |
| 06/19/2026 | Public Notice | Public Notification Violation for NPDWR Violation | Other | No | Unaddressed | — / MCL |
| 04/11/2026 | Revised Total Coliform Rule | Treatment Technique, Level 1 Assessment (RTCR) | TT | Yes | Unaddressed | — |
| 04/01/2022 | Gross Alpha, Excl. Radon and U | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | 16 PCI/L / MCL 15 pCi/L |
| 04/01/2021 | Combined Radium (-226 and -228) | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | 6 PCI/L / MCL 5 pCi/L |
| 04/01/2021 | Gross Alpha, Excl. Radon and U | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | 18 PCI/L / MCL 15 pCi/L |
| 02/12/2026 | E. COLI | Monitoring, Source Water (GWR) | MR | No | Resolved | — / MCL 0 |
| 01/01/2026 | Combined Radium (-226 and -228) | Maximum Contaminant Level Violation, Average | MCL | Yes | Archived | 6 PCI/L / MCL 5 pCi/L |
| 01/01/2022 | Gross Alpha, Excl. Radon and U | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | 16 PCI/L / MCL 15 pCi/L |
| 01/01/2021 | Combined Radium (-226 and -228) | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | 6 PCI/L / MCL 5 pCi/L |
| 01/01/2021 | Gross Alpha, Excl. Radon and U | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | 17 PCI/L / MCL 15 pCi/L |
| — | Unspecified | — | No | — | — |
Lead & copper rule sample highlights
Codes PB90 / CU90 in SDWIS typically represent 90th percentile lead/copper monitoring results under the Lead and Copper Rule.
Lead (PB90)
- 12/31/2025: .0015 mg/L
- 12/31/2024: .00229 mg/L
- 12/31/2022: .0124 mg/L
- 12/31/2008: .0024 mg/L
- 12/31/1999: .0016 mg/L
- 12/31/1996: .0009 mg/L
- 12/31/1995: .0012 mg/L
- 12/31/1993: .0061 mg/L
FAQs
What does PWSID TX1600001 mean?
A Public Water System Identification number uniquely identifies a system in EPA’s Safe Drinking Water Information System (SDWIS). Texas IDs start with TX.
How current is this page?
Systems and geography reflect the EPA SDWA quarterly snapshot used for this build. Violation rows are a filtered recent subset (generally 2021+) and capped for readability—always confirm on ECHO and your CCR.
What should I do if I see a health-based violation?
Read the dates and status. Contact the utility for context, check for public notices, and review the newest Consumer Confidence Report. For medical concerns, talk with a clinician—this site is educational only.
Do lead/copper samples mean my home is safe?
LCR samples are utility monitoring results (often 90th percentile summary codes like PB90/CU90), not a test of every tap. Home plumbing can differ. Consider a certified lab test if you have reason for concern.
Citations
- EPA SDWIS via ECHO SDWA downloads: systems, geographic areas, violations/enforcement, LCR samples — SDWA Data Download Summary
- Explore the system in EPA tools using PWSID
TX1600001— ECHO home - Learn more about standards: EPA Safe Drinking Water Act