MOUNT SYLVAN WATER SYSTEM
Texas — Community Water System — PWSID: TX2120034
System Information
| PWSID | TX2120034 |
| System Name | MOUNT SYLVAN WATER SYSTEM |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 06 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 14, 1980 |
| Last Reported | Mar 31, 2026 |
Location & Contact
| State | Texas |
| City | CYPRESS |
| ZIP Code | 77429-7080 |
| Address | 17681 TELGE RD |
| Organization | WALLACE, EDWARD, R |
| Phone | 713-574-5953 |
Population & Service
| Population Served | 1,056 |
| Service Connections | 352 |
Drinking Water Violations (47)
This water system has 47 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Jul 1, 2021 | Sep 30, 2021 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2021 | — | |
| Jul 1, 2021 | Sep 30, 2021 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2021 | — | |
| Jul 1, 2021 | Sep 30, 2021 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2021 | — | |
| Jul 1, 2021 | Sep 30, 2021 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2021 | — | |
| Apr 18, 2021 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 10 mg/L | — | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 10 mg/L | — | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 10 mg/L | — | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 10 mg/L | — | Resolved | Mar 31, 2019 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2016 | Dec 31, 2016 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Oct 1, 2016 | Dec 31, 2016 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Oct 1, 2016 | Dec 31, 2016 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Oct 1, 2016 | Dec 31, 2016 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Sep 29, 2013 | — | MR | No | No | — | TT | — | Resolved | Sep 28, 2013 | — | |
| Jan 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Oct 3, 2013 | — | |
| Jul 1, 2011 | Sep 30, 2011 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2011 | — | |
| May 1, 1993 | May 31, 1993 | MCL | Yes | No | — | 5% of samples | — | Archived | May 31, 1993 | — | |
| May 1, 1993 | May 31, 1993 | Other | No | No | — | 5% of samples | — | Archived | May 31, 1993 | — | |
| Aug 1, 1992 | Aug 31, 1992 | Other | No | No | — | 5% of samples | — | Archived | Aug 31, 1992 | — | |
| Aug 1, 1992 | Aug 31, 1992 | MR | No | Yes | — | 5% of samples | — | Archived | Aug 31, 1992 | — | |
| Jul 1, 1992 | Jul 31, 1992 | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 1992 | — | |
| Aug 1, 1991 | Aug 31, 1991 | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 1991 | — | |
| Aug 1, 1991 | Aug 31, 1991 | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 1991 | — | |
| Jul 1, 1991 | Jul 31, 1991 | MR | No | No | — | 5% of samples | — | Archived | Jul 31, 1991 | — | |
| Jul 1, 1991 | Jul 31, 1991 | MR | No | No | — | 5% of samples | — | Archived | Jul 31, 1991 | — | |
| Jul 1, 1991 | Jul 31, 1991 | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 1991 | — | |
| Jul 1, 1991 | Jul 31, 1991 | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 1991 | — | |
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About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.