Chlorine (MRDL) violations in New Mexico
103 active public water systems in New Mexico had a Chlorine (MRDL) violation in the past three years, 4 of them in the latest quarter of EPA's data. What Chlorine (MRDL) is and why it matters.
Health effects: Acute high-dose exposure to chlorinated water can cause eye and nose irritation, stomach discomfort, and nausea. Chronic exposure above the MRDL is primarily a concern because elevated chlorine accelerates formation of trihalomethanes and haloacetic acids, which are associated with increased cancer risk over time.
Systems with a Chlorine (MRDL) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
San Antonio de Cleveland Mdwca Cleveland · Mora County |
269 | 3 | 0 | |
|
Crystal Community Boarding School Bia Crystal · County |
248 | 5 | 1 | |
|
Hope Water System Hope · Eddy County |
245 | 2 | 0 | |
|
Tohatchi Public School Tohatchi · County |
240 | 3 | 0 | |
|
Buena Vista Mdwc & Swa Buena Vista · Mora County |
225 | 6 | 1 | |
|
Des Moines Water System Des Moines · Union County |
218 | 7 | 0 | |
|
Capulin Mdwca Capulin · Rio Arriba County |
215 | 4 | 1 | |
|
Ramah-Mountain View Rnua Ramah, Mountain View · County |
215 | 4 | 2 | |
|
Hondo Valley School Hondo · Lincoln County |
200 | 2 | 0 | |
|
LA Joya Mdwca Lajoya · Socorro County |
200 | 7 | 2 | |
|
LA Vida Mission Community Water Supply Farmington · San Juan County |
200 | 4 | 1 | |
|
Toadlena Boarding School Bia Toadlena · County |
200 | 4 | 1 | |
|
Animas School System Animas · Hidalgo County |
184 | 3 | 0 | |
|
Glen Acres Water Coop Lordsburg · Hidalgo County |
180 | 5 | 3 | |
|
Las Placitas Presbyterian Church Placitas · Sandoval County |
180 | 3 | 1 | |
|
Smokey Bear R S Lincoln Usfs Ruidoso · Lincoln County |
180 | 2 | 0 | |
|
Chilili Water Users Assn Tijeras · Bernalillo County |
175 | 8 | 3 | |
|
Ramah-Ramah Rural Rnua Ramah Rural · County |
165 | 4 | 2 | |
|
Mariano Lake Community School Bia Mariano Lake Boarding School · County |
160 | 4 | 1 | |
|
Sile Mdwca Pena Blanca · Sandoval County |
154 | 8 | 0 | |
|
Canones Mdwca Canones · Rio Arriba County |
150 | 3 | 1 | |
|
Leprino Roswell · Chaves County |
150 | 4 | 0 | |
|
Tseiiahi (standing Rock) Community School Bia Standing Rock Boarding School · County |
143 | 4 | 1 | |
|
Watrous Mdwca Watrous · Mora County |
135 | 3 | 1 | |
|
Valley Elementary and Middle School Ribera · San Miguel County |
130 | 4 | 1 | |
|
Rio Arriba County Detention Center Tierra Amarilla · Rio Arriba County |
128 | 2 | 1 | |
|
Abiquiu Elementary School Abiquiu · Rio Arriba County |
125 | 4 | 2 | |
|
Beclabito Day School Bia Beclabito · County |
120 | 3 | 0 | |
|
Vermejo Park Headquarters Raton · Colfax County |
120 | 4 | 0 | |
|
Southwestern College Santa Fe · Santa Fe County |
117 | 2 | 0 | |
|
Spring Canyon Ranch Quemado · Catron County |
116 | 3 | 0 | |
|
Karr Canyon Estates High Rolls · Otero County |
108 | 1 | 0 | |
|
Former Pueblo Pintado Boarding School Bia Former Pueblo Pintado Boarding School · County |
103 | 4 | 3 | |
|
Fort Stanton Historic Site Fort Stanton · Lincoln County |
102 | 5 | 0 | |
|
Guadalupita Mdwca Guadalupita · Mora County |
82 | 5 | 1 | |
|
Nogal Mdwca Nogal · Lincoln County |
82 | 4 | 0 | |
|
Pete Ragan Memorial Wua Mayhill · Otero County |
82 | 4 | 0 | |
|
Nenahnezad Community School Bia Nenahnezad · County |
80 | 2 | 1 | |
|
Sanostee (new) Day School Bia Sanostee · County |
80 | 2 | 0 | |
|
Peoples Water Coop Deming · Luna County |
76 | 5 | 1 | |
|
Western Terrace Albuquerque · Bernalillo County |
76 | 6 | 4 | |
|
Juniper Mobile Park High Rolls · Otero County |
75 | 4 | 0 | |
|
Bearcat Homeowners Association Tijeras · Bernalillo County |
60 | 6 | 3 | |
|
Nara Visa Mdwca Nara Visa · Quay County |
59 | 7 | 1 | |
|
Monarchy Country Estates Hobbs · Lea County |
52 | 7 | 1 | |
|
Mike Mateo Elementary School Las Vegas · San Miguel County |
50 | 3 | 0 | |
|
Gabaldon Mdwca Las Vegas · San Miguel County |
47 | 6 | 2 | |
|
ST Josephs School San Fidel · Cibola County |
45 | 5 | 3 | |
|
Pine River Mdca Navajo Dam · San Juan County |
43 | 9 | 5 | |
|
Enchanted Valley Wua Alamogordo · Otero County |
40 | 6 | 4 |
About this data
A system is counted once if any of its violations in the past three years involved Chlorine (MRDL), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Chlorine (MRDL) alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The New Mexico records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.