Water Hardness in New Mexico

33 counties — Average 362.6 PPM (Very Hard)

Soft (3.0%) Moderate (21.2%) Hard (15.2%) Very Hard (60.6%)

New Mexico Water Hardness Map

Soft Moderate Hard Very Hard

Hardest Water Counties

Chaves1400 PPM

Cibola380 PPM

Colfax230 PPM

Curry213 PPM

De Baca1000 PPM

Doña Ana300 PPM

Eddy1900 PPM

Guadalupe860 PPM

Harding230 PPM

Lea260 PPM

Lincoln571.5 PPM

Mora244 PPM

+8 more

New Mexico

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All 33 Counties — By Water Hardness

County	Classification	Hardness
Bernalillo	Hard	153 PPM
Catron	Moderate	120 PPM
Chaves	Very Hard	1400 PPM
Cibola	Very Hard	380 PPM
Colfax	Very Hard	230 PPM
Curry	Very Hard	213 PPM
De Baca	Very Hard	1000 PPM
Doña Ana	Very Hard	300 PPM
Eddy	Very Hard	1900 PPM
Grant	Moderate	113 PPM
Guadalupe	Very Hard	860 PPM
Harding	Very Hard	230 PPM
Hidalgo	Moderate	110 PPM
Lea	Very Hard	260 PPM
Lincoln	Very Hard	571.5 PPM
Los Alamos	Soft	56 PPM
Luna	Moderate	91 PPM
McKinley	Hard	136 PPM
Mora	Very Hard	244 PPM
Otero	Very Hard	730 PPM
Quay	Very Hard	320 PPM
Rio Arriba	Moderate	120 PPM
Roosevelt	Very Hard	340 PPM
San Juan	Very Hard	200 PPM
San Miguel	Hard	122 PPM
Sandoval	Moderate	118.7 PPM
Santa Fe	Hard	128 PPM
Sierra	Very Hard	210 PPM
Socorro	Very Hard	238 PPM
Taos	Moderate	107 PPM
Torrance	Very Hard	450 PPM
Union	Very Hard	376 PPM
Valencia	Hard	140 PPM

Source: USGS Water Quality Portal

Frequently Asked Questions

How hard is the water in New Mexico?

New Mexico has an average water hardness of 362.6 PPM, classified as very hard. Out of 33 counties, 1 have soft water, 7 moderately hard, 5 hard, and 20 very hard.

Which New Mexico counties have the hardest water?

New Mexico has 20 counties with very hard water (above 180 mg/L). See the county table above for a complete breakdown by hardness level.

How do I check water hardness for my New Mexico address?

Enter your ZIP code in the search box above to see your area's estimated water hardness, classification, and water utility information.