We found 20 public water systems in Rockwall county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| City Of Rockwall | Rockwall | 40,620 | 24 | 1 |
| City Of Royse City | Royse City | 11,988 | 25 | 10 |
| City Of Fate | County of Rockwall | 11,200 | 38 | 14 |
| City Of Heath | County of Rockwall | 6,188 | 0 | 11 |
| Blackland Wsc | County of Rockwall | 4,872 | 34 | 12 |
| R C H Wsc | County of Rockwall | 4,467 | 0 | 6 |
| Camp Wildurr | County of Rockwall | 3,000 | 0 | 0 |
| Mount Zion Wsc | County of Rockwall | 2,022 | 0 | 11 |
| Cove Ridge Water Distribution | County of Rockwall | 156 | 0 | 0 |
| Briarwick Place Subd | County of Rockwall | 155 | 0 | 0 |
| Bob Mccauley's Barbecue | County of Rockwall | 90 | 0 | 0 |
| Dairyland Heights | County of Rockwall | 75 | 0 | 0 |
| Pinewood Manor Mhp | County of Rockwall | 72 | 0 | 0 |
| Robin's Nest Restaurant | County of Rockwall | 60 | 0 | 0 |
| St. Vincent Depaul Seminary | County of Rockwall | 50 | 0 | 0 |
| Evergreen | County of Rockwall | 40 | 0 | 0 |
| Silsbee Gas Plant | County of Rockwall | 28 | 0 | 0 |
| Shady Trailer Park | County of Rockwall | 26 | 0 | 0 |
| Colony Park | County of Rockwall | 21 | 0 | 0 |
| Buffalo Creek Utility | County of Rockwall | 0 | 0 | 0 |