How hard is the water in Dumas, TX?

Tap water hardness
97mg/L
5.7gpg
Moderately hardReports range 48–97

Reported by City of Dumas · June 2022

TX typical
112 mg/L
EPA health violations since 2016
1
Softener for 3 people
24k grain
Data
Utility report

The water in Dumas carries roughly 97 mg/L of dissolved calcium and magnesium, or 5.7 grains per gallon. That is moderately hard water. The number comes from City of Dumas, dated June 2022. Reports for this system disagree, with values from 48 to 97 mg/L.

Dumas on the hardness scale, with nearby cities
060120180240300360+TX typical 112Brownfield: 58 mg/LBrownfield 58Amarillo: 106 mg/LAmarillo 106Pampa: 122 mg/LPampa 122Canyon: 136 mg/LCanyon 136Perryton: 154 mg/LPerryton 154Plainview: 154 mg/LPlainview 154Borger: 164 mg/LBorger 164Levelland: 193 mg/LLevelland 193Lubbock: 205 mg/LLubbock 205Vernon: 261 mg/LVernon 261Dumas 97mg/L as calcium carbonate060120180240300360+TX 112Amarillo: 106 mg/LAmarillo 106Pampa: 122 mg/LPampa 122Canyon: 136 mg/LCanyon 136Perryton: 154 mg/LPerryton 154Plainview: 154 mg/LPlainview 154Borger: 164 mg/LBorger 16497 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Dumas sits 15 mg/L below the typical Texas figure of 112. Of the 10 nearest cities we track, 1 has softer water and 9 have harder. The range nearby runs from 58 mg/L in Brownfield to 261 in Vernon.

What 97 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.

What to do about it

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Dumas

3 people × 75 gallons a day × 5.7 gpg = 1,280 grains a day. A 24,000-grain unit regenerates about every 18 days.

Size it for your household

EPA record for Dumas's water system

City of Dumas · PWSID TX1710001

1 health-based violation since 2016

Serves about 14,935 people from groundwater.

Health-based
1
Monitoring or reporting
13
Open now
2
20162017201820192020202120222023202420252026Total Coliform Rule'16'18'20'22'24'26Total Coliform Rule
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Total Coliform Rulebacteria12016Resolved

Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.

Questions

Is Dumas water hard?

Somewhat. It measures about 97 mg/L (5.7 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in Dumas in grains per gallon?

About 5.7 gpg. One grain per gallon equals 17.1 mg/L, so 97 mg/L divided by 17.1 gives 5.7.

What size water softener do I need in Dumas?

For 3 people using 75 gallons each per day, 5.7 gpg works out to about 1,280 grains a day. A 24,000-grain softener covers that with a regeneration about every 18 days.

Has the Dumas water system had EPA violations?

EPA records show 1 health-based violation for City of Dumas since 2016, involving Total Coliform Rule. There were also 13 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 342 cities in Texas

Hardness data: TapWaterData US Water Hardness (utility report, June 22, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.