Lake Montezuma, AZ Water Safety: 55/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Drilling into federal monitoring figures for Lake Montezuma in AZ, the pattern is middle-of-the-road — some utilities have documented MCL exceedances or treatment technique violations in recent years, while others have operated without a single flag, making the city's grade a genuine average rather than a rounded-down high.
How Lake Montezuma Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Lake Montezuma Residents
- Estimated remediation: $1,600 per household.
- CDC health risk index: 13.61 — above typical levels.
Lake Montezuma's Water Providers
Lake Montezuma, AZ draws its water from one primary utility across 1 tracked system.
Overview
We track water quality and home safety data for 1 ZIP code in Lake Montezuma, Arizona, covering 1 community water system serving approximately 3,423 people.
No EPA violations recorded across any ZIP codes in Lake Montezuma — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Lake Montezuma: C (55/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Lake Montezuma water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Lake Montezuma
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 86342 | C | ARIZONA WATER CO - RIMROCK | 3,423 |
All ZIP Codes in Lake Montezuma
- 86342 [C]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Lake Montezuma Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Lake Montezuma: Flood History & Water Damage Risk
Flood exposure in Lake Montezuma is meaningful by NFIP measures — 16 claims on record and 100% of ZIP codes carrying FEMA flood zone designations. That level of activity makes flood history a relevant factor when evaluating local water quality over time.
Lake Montezuma has a moderate flood history with 16 FEMA claims averaging $3,529 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,600</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Lake Montezuma
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Lake Montezuma, AZ