Sierra Vista Tap Water Quality Report
Sierra Vista's water has 1 contaminant above EPA MCLGs. Consider using a certified water filter for additional protection.
No single water system serves most of Sierra Vista (44,710 residents, Census 2024 estimate). Its large systems are ARIZONA WATER CO - SIERRA VISTA (EPA counts 9,094 people served, about 20% of Sierra Vista's population); BELLA VISTA CITY WATER SYSTEM (EPA counts 20,045 people served, about 45% of Sierra Vista's population); US ARMY FORT HUACHUCA (EPA counts 15,603 people served, about 35% of Sierra Vista's population); PUEBLO DEL SOL WATER COMPANY (EPA counts 12,804 people served, about 29% of Sierra Vista's population). EPA's counts may include people served outside Sierra Vista, so each share is at most that. Check which one bills you: each system's figures are shown separately below.
- ARIZONA WATER CO - SIERRA VISTA: 106 contaminants tested, 1 above EPA MCLGs; health-based violations since 2020: 0
- BELLA VISTA CITY WATER SYSTEM: 110 contaminants tested, 3 above EPA MCLGs; health-based violations since 2020: 0
- US ARMY FORT HUACHUCA: 120 contaminants tested, 7 above EPA MCLGs; health-based violations since 2020: 0
- PUEBLO DEL SOL WATER COMPANY: 111 contaminants tested, 1 above EPA MCLGs; health-based violations since 2020: 5
3 other systems serving parts of Sierra Vista report results above guidelines — check which system bills you. BELLA VISTA CITY WATER SYSTEM (3 above guidelines), SIERRA VISTA MH VILLAGE (1 above guidelines), PUEBLO DEL SOL WATER COMPANY (1 above guidelines)
Other systems listed for Sierra Vista with results above guidelines: NACO WATER CO BISBEE (3 above guidelines), US ARMY FORT HUACHUCA (7 above guidelines)
Water systems
4 large systems
Residents (Census 2024)
44,710
Health-based violations since 2020
0
ARIZONA WATER CO - SIERRA VISTA. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
May 2022 · ARIZONA WATER CO - SIERRA VISTA
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Sierra Vista Tap Water Safe to Drink?
We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems. Sierra Vista's water has 1 contaminant above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
ARIZONA WATER CO - SIERRA VISTA, Sierra Vista's water system, serves 9,094 people. 3 other systems also serve parts of Sierra Vista. 3 other systems are listed for Sierra Vista. Each system's results are listed under its own name, never added to ARIZONA WATER CO - SIERRA VISTA's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for ARIZONA WATER CO - SIERRA VISTA is from May 2022.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Arizona
Sierra Vista Water Service Areas
What these numbers actually mean for Sierra Vista, AZ
We read Sierra Vista, AZ’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 1 contaminant above EPA MCLGs and 14 contaminants with an EPA health goal detected in some samples (no level on file)
- 104 results on file
- 23 PFAS compounds on record
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Recommended Water Filters for Sierra Vista
Based on Sierra Vista's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
AquaTru
Classic
NSF Certified:
Flow Rate
0.04 gpm
Daily Production
600 gpd
Highlights:
- Best overall contaminant reduction score
- Most performance certifications
- Lifetime warranty
- NSF-42, NSF-53, NSF-58, NSF-401 certified
Removes 23 contaminants:
+18 more
Molybdenum, Barium, Chlorine, Arsenic, 83+ contaminants, Calcium, Chloride, Copper, Magnesium, Nitrate, Phosphorus, Sodium, Sulfate, Total Dissolved Solids, Zinc, Total THMs, Chloroform, Nitrate (as N)
AquaTru
Carafe
NSF Certified:
Flow Rate
0.3 gpm
Daily Production
4 gpd
Highlights:
- Verified PFAS reduction
- Glass collection vessel
- Plug-and-play installation
- NSF-53, NSF-42, NSF-58, NSF-401, NSF-372 certified
Removes 17 contaminants:
+12 more
Arsenic, 83+ contaminants, Copper, Total THMs, Chloroform, Chloride, Sulfate, Nitrate (as N), Molybdenum, Barium, Strontium, Uranium
Waterdrop
G3 P600
NSF Certified:
Flow Rate
600 gpm
Daily Production
600 gpd
Highlights:
- Space-saving design
- Good contaminant reduction
- NSF-58 certified
Removes 4 contaminants:
iSpring Water Systems LLC
RCC7
NSF Certified:
Daily Production
21.04 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 21.04 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 1 contaminants:
Filters for what Sierra Vista reported
Test Your Water Quality
Professional laboratory testing provides accurate, detailed analysis of your drinking water.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
What Sierra Vista's water readings can explain
We publish a city-level hardness figure for Sierra Vista, resolved from its water systems where they report one and estimated from county sampling where they do not. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near Sierra Vista? Public-water results do not apply to private wells. See Cochise County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Sierra Vista
Sierra Vista's tap water has an estimated 9.9 grains per gallon (170.0 mg/L, county sampling in Cochise County) — hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for an estimated 9.9 gpg water in Sierra Vista — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full. For the national picture first, read what a water softener costs — equipment, installation labour and ten-year ownership, each separated out. For Arizona as a whole, read water softener cost in Arizona — priced against the plumber wage published for the state.
Frequently Asked Questions About Sierra Vista Tap Water
Sierra Vista's water has 1 contaminant above EPA MCLGs. While the water meets federal legal limits, we recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach ARIZONA WATER CO - SIERRA VISTA. For a problem with your water now (discolored water, no water, low pressure, a leak), contact ARIZONA WATER CO - SIERRA VISTA directly.
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