Sodium in Texas well water
In Texas, sodium was detected in 100% of 21,087 tested private well samples.
Sodium enters wells with road salt and from softeners. EPA's guidance level of 20 mg/L matters for people on sodium-restricted diets; most people are not affected below 250 mg/L.
Check your sodium number
Type the value from your lab report. It is compared to the EPA limit, the same way the full interpretation does it.
Getting it fixed
Book a free in-home water test with a licensed local company, or see the treatment guide for what removes sodium.
By county, from individual samples
Public monitoring samples against the EPA limit; counties with at least 30 samples.
| County | Samples | Detected | Above EPA limit | Median | Highest |
|---|---|---|---|---|---|
| Andrews | 48 | 100% | no limit | 191 | 1,080 mg/L |
| Anderson | 126 | 100% | no limit | 20 | 401 mg/L |
| Aransas | 34 | 100% | no limit | 230 | 1,760 mg/L |
| Archer | 196 | 100% | no limit | 317 | 2,185 mg/L |
| Armstrong | 48 | 100% | no limit | 30.1 | 99.9 mg/L |
| Angelina | 56 | 100% | no limit | 191 | 2,120 mg/L |
| Austin | 83 | 100% | no limit | 40 | 180 mg/L |
| Bandera | 129 | 100% | no limit | 29 | 140 mg/L |
| Bastrop | 126 | 100% | no limit | 73 | 465 mg/L |
| Baylor | 81 | 100% | no limit | 201 | 3,511 mg/L |
| Bee | 166 | 100% | no limit | 166 | 1,156 mg/L |
| Bell | 70 | 100% | no limit | 179 | 1,600 mg/L |
| Bexar | 119 | 100% | no limit | 8 | 510 mg/L |
| Atascosa | 134 | 100% | no limit | 88.2 | 1,098 mg/L |
| Bosque | 65 | 100% | no limit | 168 | 1,220 mg/L |
- San Antonio Northwest CCD, Bexar County100% detected of 53
- San Antonio North CCD, Bexar County100% detected of 38
- Quitman CCD, Wood County100% detected of 31
- Winnsboro CCD, Wood County100% detected of 31
- Nome-China CCD, Jefferson County100% detected of 33
- Big Lake CCD, Reagan County100% detected of 124
- Liberty-Dayton CCD, Liberty County100% detected of 40
- Kermit CCD, Winkler County100% detected of 48
- Cedar Park-Liberty Hill CCD, Williamson County100% detected of 61
- Florence CCD, Williamson County100% detected of 49
- Jarrell CCD, Williamson County100% detected of 63
- Northeast Brazos CCD, Brazos County100% detected of 34
- Taylor CCD, Williamson County100% detected of 32
- Rankin CCD, Upton County100% detected of 66
- Corrigan CCD, Polk County100% detected of 44
- Livingston-Onalaska CCD, Polk County100% detected of 100
- Buna CCD, Jasper County100% detected of 59
- Jasper CCD, Jasper County100% detected of 88
- Kirbyville CCD, Jasper County100% detected of 55
- Panhandle CCD, Carson County100% detected of 38
Sources
- Individual samples from the USGS Water Quality Portal and state monitoring, summarized per geography. sodium counts and shares are listed on each county and town page with their sources.