Hard water in Clovis, NM
County estimate from 60 water samples in Curry County · July 2026
- NM typical
- 137 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- County estimate
Water samples from around Clovis put hardness at about 258 mg/L (15.1 gpg), which would be very hard on the USGS scale. Treat this as a rough guide: it is the median of 60 samples taken across Curry County, mostly wells and streams, not a test of Clovis's treated tap water.
Clovis sits 121 mg/L above the typical New Mexico figure of 137. Of the 10 nearest cities we track, 9 have softer water and 1 has harder. The range nearby runs from 70 mg/L in Santa Fe to 383 in Alamogordo.
What 258 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 258 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.
3 people × 75 gallons a day × 15.1 gpg = 3,395 grains a day. A 24,000-grain unit regenerates about every 7 days.
EPA record for Clovis's water system
No health-based violations since 2016
Serves about 41,066 people from groundwater.
- Health-based
- 0
- Monitoring or reporting
- 8
- Open now
- 0
EPA lists this system as serving Clovis.
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 Clovis water hard?
Yes. It measures about 258 mg/L (15.1 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Clovis in grains per gallon?
About 15.1 gpg. One grain per gallon equals 17.1 mg/L, so 258 mg/L divided by 17.1 gives 15.1.
What size water softener do I need in Clovis?
For 3 people using 75 gallons each per day, 15.1 gpg works out to about 3,395 grains a day. A 24,000-grain softener covers that with a regeneration about every 7 days.
Has the Clovis water system had EPA violations?
EPA records show no health-based violations for EPCOR Water New Mexico Inc Clovis since 2016. There were also 8 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Las Vegas140 mg/LHard
- Ruidoso169 mg/LHard
- Santa Fe70 mg/LModerately hard
- Alamogordo383 mg/LVery hard
- North Valley137 mg/LHard
- Albuquerque137 mg/LHard
- South Valley137 mg/LHard
- Los Ranchos de Albuquerque137 mg/LHard
- Rio Rancho107 mg/LModerately hard
- Las Cruces202 mg/LVery hard
Hardness data: TapWaterData US Water Hardness (county estimate, July 4, 2026), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.