# Harris County MUD 489: 158,670-gallon sewage overflow (equipment failure) in Harris County, TX

**Score:** 65/100

| Field | Value |
|---|---|
| Utility / system | Harris County MUD 489 |
| System type | Utility district (MUD, WCID, SUD) |
| TCEQ RN | RN105348213 |
| Volume | 158,670 gallons |
| Cause | EQUIPMENT FAILURE |
| Source | Texas Commission on Environmental Quality (TCEQ) Sanitary Sewer Overflows (data.texas.gov) |
| County | Harris |
| TCEQ region | Houston |
| Dates | 2026-05-10 |
| Reported | 2026-05-11 |
| Incident number | 457811 |

## Why this score
- 158,670 gallons: a major overflow.
- Equipment failure: a fixable infrastructure cause.

Source: Texas Commission on Environmental Quality (TCEQ) Sanitary Sewer Overflows (data.texas.gov) (https://data.texas.gov/d/8kc5-95uk). Last refreshed: 2026-10-28T20:50:27.175Z.
From TCEQ Sanitary Sewer Overflow reports, which TCEQ publishes in monthly batches (recent weeks may not appear yet). Volumes are as reported by the utility and are often estimates. Utility/system level only. Verify with TCEQ.