Public water system record
City of Mont Belvieu
Serves Mont Belvieu, Chambers County, TX · 12,864 people served
Federal records show 4 health-based violations and 3 monitoring/reporting issues for City of Mont Belvieu in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.
System profile
- Health-based violations, last 10 years
- 4
- Resolved
- 3
- Unresolved
- 0
- Archived by EPA
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- City of Mont Belvieu draws water from 4 wells.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit), 2025.
- Record on file since 1978, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 3,765 service lines.
Check whether City of Mont Belvieu serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Oct 1, 2024 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Oct 1, 2022 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Apr 1, 2022 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlorine
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2016 | Resolved |
Full record since 1978
EPA's records for City of Mont Belvieu go back to 1978. Before October 19, 2016 they list 2 health-based violations (2 archived by EPA without a recorded fix) and 9 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 2 | 0 |
| 1990s | 0 | 2 |
| 2010 to October 18, 2016 | 0 | 7 |
| October 19, 2016 to 2019 | 0 | 3 |
| 2020s | 4 | 0 |
Most recent health-based violation before October 19, 2016: Fluoride, began November 1978, Archived.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Fluoride
Contaminant limit exceeded
|
Nov 13, 1978 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Nov 13, 1978 | Archived |
What the violations mean
Total Trihalomethanes (TTHMs)
4 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
City of Mont Belvieu draws water from 4 wells.
Annual water quality report
City of Mont Belvieu must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Texas.
Certified drinking water labs by state EPA guidance for private wells