Is Regina, NM Tap Water Safe to Drink?
Graded F, with 70 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
42/100
waterverge.com Regina, NM — Water Quality Report
Regina's drinking water received a grade of F (42 out of 100), indicating failing water quality. The city's 1 water system serves approximately 705 residents using groundwater.
Lead levels were measured at 0.6 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 111 violations on record, including 38 health-based violations. 70 remain unresolved.
What to know about Regina's water
Regina ranks #138 out of 163 cities in New Mexico for water quality, placing it among the lowest-rated in the state.
Regina relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
As a small community water system, Regina may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 15 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Regina, NM water safe to drink?
Regina's drinking water has significant quality concerns based on EPA testing data. With a grade of F (42/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 705 residents using groundwater (wells).
Recent water quality updates for Regina
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Regina's water quality assessment. Grade: F (42/100).
Contaminants: Consumer Confidence Rule.
Contaminants: Consumer Confidence Rule.
8 health-based. Contaminants: Groundwater Rule.
Federal disaster declaration (FEMA DR-4152). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4079). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Regina's water supply.
Well within EPA limits.
Violation history
Regina's water system has 111 total violations on record, including 38 health-based violations. 70 remain unresolved. 15 violations were issued in the last 5 years.
Flood & environmental risk
Los Alamos County has experienced 4 federally declared disasters since 2005. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.
Where does Regina's water come from?
Regina's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 705 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Regina residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Regina's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Regina's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Drought conditions
D3 — extreme droughtSandoval County is currently in D3 (extreme drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Los Alamos County has experienced 4 federally declared disasters since 2005. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 0.6 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Regina compares by contaminant
Explore where Regina ranks among all New Mexico cities for specific contaminants.
Water source & infrastructure
Where Regina's water comes from
Regina's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 705 people through 1 water system.
Water systems serving Regina
| System Name | PWSID | Population | Source |
|---|---|---|---|
| REGINA MDWCA | NM3509523 | 705 | GW |
How Regina compares
Full New Mexico rankings →Regina's score of 42/100 is on par with the average of 44/100 among major New Mexico cities. It outscores 7 of 10 nearby cities.
Nearby cities
View New Mexico rankings →About Regina, NM
Wikipedia →Los Alamos is a census-designated place in Los Alamos County, New Mexico, United States, that is recognized as one of the development and creation places of the atomic bomb—the primary objective of the Manhattan Project by Los Alamos National Laboratory during World War II. The town is on four mesas of the Pajarito Plateau, and had a population of about 13,200 as of 2020. It is the county seat and one of two population centers in Los Alamos County; the other is White Rock.
Learn more about your water
Guides and resources related to Regina's water quality findings.
Explore water quality across Sandoval
Frequently asked questions
Is Regina, NM tap water safe to drink?
Regina's water quality earned a grade of F (42/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #138 out of 163 cities tested in New Mexico.
What contaminants are in Regina's water?
Lead was measured at 0.6 ppb (90th percentile). 111 violations are on record.
How is Regina's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Regina?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Regina's water come from?
Regina's water is sourced from Groundwater. The city has 1 water system serving approximately 705 residents.
What health violations has Regina's water system had?
Regina has 38 health-based violations on record. The most recent violation was recorded in October 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 70 violations remain unresolved.
Is Regina's groundwater at risk of contamination?
Regina uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 111 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Regina's water compare to other cities?
Regina ranks #138 out of 163 cities in New Mexico (better than 15% of state cities) and #14921 out of 15744 cities nationally (5th percentile). The grade of F reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Regina's small water system affect quality?
Regina's system serves approximately 705 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 111 violations on record.