Hard water in Horizon City, TX

Tap water hardness
200mg/L
11.7gpg
Very hard

Reported by Horizon Regional MUD · June 2022

TX typical
112 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

Tap water in Horizon City has about 200 mg/L of hardness, which is 11.7 grains per gallon. On the USGS scale that counts as very hard. The number comes from Horizon Regional MUD, dated June 2022.

Horizon City on the hardness scale, with nearby cities
060120180240300360+TX typical 112Monahans: 88 mg/LMonahans 88Homestead Meadows South: 139 mg/LHomestead Meadows South 139Homestead Meadows North: 139 mg/LHomestead Meadows North 139Canutillo: 139 mg/LCanutillo 139El Paso: 140 mg/LEl Paso 140Fort Bliss: 144 mg/LFort Bliss 144Socorro: 181 mg/LSocorro 181San Elizario: 181 mg/LSan Elizario 181Fort Stockton: 188 mg/LFort Stockton 188West Odessa: 329 mg/LWest Odessa 329Horizon City 200mg/L as calcium carbonate060120180240300360+TX 112Homestead Meadows South: 139 mg/LHomestead. 139Homestead Meadows North: 139 mg/LHomestead. 139El Paso: 140 mg/LEl Paso 140Fort Bliss: 144 mg/LFort Bliss 144Socorro: 181 mg/LSocorro 181San Elizario: 181 mg/LSan Elizar. 181200 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 200 mg/L, Horizon City is 88 mg/L above the typical Texas figure of 112. Of the 10 nearest cities we track, 9 have softer water and 1 has harder. The range nearby runs from 88 mg/L in Monahans to 329 in West Odessa.

What 200 mg/L means at home

Scale forms fast here. Kettles and coffee makers need regular descaling, and showerheads clog unless you clean them.

Tank water heaters collect mineral sediment that insulates the water from the burner, so flushing the tank matters more than usual.

Dishes and glass shower doors spot easily. Soap scum and a dull film on hair or laundry are common complaints.

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

At 200 mg/L most of the trouble is scale, and only a few things deal with it.

Ion-exchange water softener

The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.

Salt-free conditioner

No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.

Reverse osmosis or carbon filter

Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.

Softener size for Horizon City

3 people × 75 gallons a day × 11.7 gpg = 2,632 grains a day. A 24,000-grain unit regenerates about every 9 days.

Size it for your household

EPA record for Horizon City's water system

Horizon Regional MUD · PWSID TX0710005

No health-based violations since 2016

Serves about 31,542 people from groundwater.

Health-based
0
Monitoring or reporting
2
Open now
1

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 Horizon City water hard?

Yes. It measures about 200 mg/L (11.7 grains per gallon), which the USGS classes as very hard.

What is the water hardness in Horizon City in grains per gallon?

About 11.7 gpg. One grain per gallon equals 17.1 mg/L, so 200 mg/L divided by 17.1 gives 11.7.

What size water softener do I need in Horizon City?

For 3 people using 75 gallons each per day, 11.7 gpg works out to about 2,632 grains a day. A 24,000-grain softener covers that with a regeneration about every 9 days.

Has the Horizon City water system had EPA violations?

EPA records show no health-based violations for Horizon Regional MUD since 2016. There were also 2 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 27, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.