G M WSC water quality report, rewritten
- Serves
- 11,220
- Connections
- 3,511
- Water source
- Surface water
- Based in
- Hemphill, TX
- County
- Sabine
- Owner
- Local government
PWSID TX2020067 · EPA data
Read this first
- Lithium (above EPA’s health benchmark) was found in seven of 18 samples, highest 11.2 ppb. Above EPA’s health reference level of 10 ppb, a screening level rather than an enforceable limit.
9 health-based violations since 2016. Details are below.
What was found
Highlighted: above the health goal, or EPA’s health benchmark where there is no goal. Circled: above the legal limit in at least one sample, or the action level. Every scale puts that line at its middle.
PFAS and lithium: EPA UCMR 5, samples taken from Jan. 18, 2023 to Feb. 14, 2024. Each blue tick on a scale is one sample where it was found.
Lithium (above EPA’s health benchmark)
Comes from the source
11.2ppb
Highest of 18 samples; found in seven
Above EPA’s health reference level of 10 ppb, a screening level rather than an enforceable limit.
What handles it
No certification claim covers this compound yet.
PFBS
Comes from the source
15.1ppt
Highest of 18 samples; found in two
Below EPA’s hazard index benchmark of 2,000 ppt. PFBS has no legal limit or health goal of its own.
What handles it
- NSF/ANSI 53Look for: Total PFAS Reduction
Also found, with no federal limit
EPA measured these PFAS to learn how often they occur. None has a legal limit or a health goal yet.
| Compound | Highest sample | Found in | Certification claim |
|---|---|---|---|
| NFDHA | 39 ppt | 1 of 18 | None covers it |
| PFBA | 6.9 ppt | 1 of 18 | None covers it |
| PFPeA | 6.3 ppt | 1 of 18 | None covers it |
| PFHxA | 6.0 ppt | 1 of 18 | None covers it |
Tested and not found
Below EPA’s minimum reporting level in every sample taken from Jan. 18, 2023 to Feb. 14, 2024. Not found means not measured above that level, which is not the same as zero.
All 25 compounds tested and not found
- 11Cl-PF3OUdS
- 4:2 FTS
- 6:2 FTS
- 8:2 FTS
- 9Cl-PF3ONS
- ADONA
- HFPO-DA (GenX)
- Lead
- NEtFOSAA
- NMeFOSAA
- PFDA
- PFDoA
- PFEESA
- PFHpA
- PFHpS
- PFHxS
- PFMBA
- PFMPA
- PFNA
- PFOA
- PFOS
- PFPeS
- PFTA
- PFTrDA
- PFUnA
Violations since 2016
| Contaminant or rule | Type | Period | Measured | Status |
|---|---|---|---|---|
| Lead and Copper Rule Revisions | The required inventory of lead service lines was not completed or submitted on time.EPA: LSL Inventory | Oct. 17, 2024 | — | Resolved |
| Revised Total Coliform Rule | Coliform results required a check of the system, and the check or its fixes were not done on time.EPA: Treatment Technique, Level 1 Assessment (RTCR) | March 9, 2024 | — | Resolved |
| TTHM | The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average | Oct. 1, 2021 to Dec. 31, 2021 | 0.084 MG/L | Resolved |
| Interim Enhanced Surface Water Treatment Rule | Too many readings in a month showed cloudiness above the filtration standard.EPA: Monthly Turbidity Exceed (Enhanced SWTR) | July 1, 2017 to July 31, 2017 | — | Resolved |
| Interim Enhanced Surface Water Treatment Rule | Too many readings in a month showed cloudiness above the filtration standard.EPA: Monthly Turbidity Exceed (Enhanced SWTR) | Sept. 1, 2016 to Sept. 30, 2016 | — | Resolved |
| TTHM | The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average | Jan. 1, 2016 to March 31, 2016 | 0.088 MG/L | Resolved |
| Total Haloacetic Acids (HAA5) | The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average | Jan. 1, 2016 to March 31, 2016 | 0.09 MG/L | Resolved |
| TTHM | The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average | Jan. 1, 2016 to March 31, 2016 | 0.081 MG/L | Resolved |
| Total Haloacetic Acids (HAA5) | The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average | Jan. 1, 2016 to March 31, 2016 | 0.065 MG/L | Resolved |
| Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 10 monitoring or reporting violations not shown. | ||||
What this report cannot tell you
- Levels of everything else. Federal bulk data carries results for PFAS, lithium, lead and copper, and violations for the rest. Nitrate, arsenic, disinfection byproducts and other levels are in G M WSC’s own annual report, which it must send you every year.
- Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
- Anything after the latest data. SDWIS data is from 2026 Q2; UCMR 5 samples are from Jan. 18, 2023 to Feb. 14, 2024.
Other Texas utilities
- City of Houston3 million
- San Antonio Water System2.6 million
- Dallas Water Utility1.4 million
- City of Austin Water & Wastewater1.1 million
- City of Fort Worth955,900
- El Paso Water Utilities747,168
- City of Arlington413,955
- City of Corpus Christi318,387
- City of Plano292,059
- Lubbock Public Water System275,041
- City of Irving264,546
- City of Laredo260,046
Sources
- EPA UCMR 5 occurrence data, file of Aug. 27, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q2
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
What to do next
Read up on Lithium
What each one does to health, where it comes from, and the certification claim that addresses it.
About LithiumGet the utility’s own report
G M WSC must send you a water quality report every year. It lists nitrate, arsenic and byproduct levels this page cannot.
How to read itTest your own tap for lead
Your service line, solder and fixtures decide the lead at your faucet, not the utility’s average.
Lead in your water: what to doDecide if you want a filter at all
A filter for taste or chlorine is a preference, not a need. The standards say what each kind can do.
NSF/ANSI standards, decoded