Skip to main content
WaterVerge

Water quality report · updated Jul 2026

Is Gap/Cedar Ridge/Bittersprings,Arizona, AZ Tap Water Safe to Drink?

Graded A, with 2 unresolved violations on record. See what was cited — and what it means for your tap. What to do ↓

0 contaminants over a legal limit
2.5 ppb lead, 90th percentile · low
2 unresolved violations
1K people served by 1 water system

PWSID NN0403009 · moderate data confidence · native american utility

Reviewed by WaterVerge Editorial Team · Last updated July 2026
A 92.2 / 100

#28 of 271Arizona cities
How we grade →

01The verdict: is Gap/Cedar Ridge/Bittersprings,Arizona water safe?

Gap/Cedar Ridge/Bittersprings,Arizona's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (92.2/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 1,125 residents using groundwater (wells).

The concern

2 unresolved violations on record

EPA records show open compliance items for this system. Most are administrative, but unresolved items are worth watching.

See what was cited ↓
The good news

Lead is well under the limit

90th-percentile lead is 2.5 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.

See the trend ↓
Keep watching

A flood-prone service area

6 federal disaster declarations on record. After severe weather, watch for boil-water advisories.

See the risk factors ↓

Gap/Cedar Ridge/Bittersprings,Arizona's drinking water received a grade of A (92.2 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 1,125 residents using groundwater.

Lead levels were measured at 2.5 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 86 violations on record, including 0 health-based violations. 2 remain unresolved.

Gap/Cedar Ridge/Bittersprings,Arizona ranks #28 out of 271 cities in Arizona for water quality, placing it one of the best in the state. Gap/Cedar Ridge/Bittersprings,Arizona 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, Gap/Cedar Ridge/Bittersprings,Arizona may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

How the 92.2/100 breaks down Methodology →
ViolationsHistorical violation record including health-based and monitoring violations.
40.2 / 45B
Lead & CopperLead at 2.5 ppb (90th percentile).
20 / 20A
ContaminantsPFAS + legacy contaminant analysis.
17 / 20B
ComplianceMonitoring and reporting compliance with EPA regulations.
10 / 10A
Source RiskWater source: Groundwater.
5 / 5A

02What's in Gap/Cedar Ridge/Bittersprings,Arizona's water

Every contaminant flagged in Gap/Cedar Ridge/Bittersprings,Arizona, on one shared scale: distance to its own legal limit. The red line is the limit — anything past it is out of compliance, and the closer a bar gets, the less headroom the system has.

1 detection · sorted by % of legal limit
Over the limit Elevated — watch Within limits
0 50% LEGAL LIMIT 150%
1 contaminant tested under EPA SDWIS, LCR and UCMR programs · 1 detected · not yet tested for PFAS under UCMR 5

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 2.5 15 ppb Inorganic Safe
Data source: EPA SDWIS, UCMR 5, local utility CCR.

03Gap/Cedar Ridge/Bittersprings,Arizona's ten-year track record

Each box is one year. A green check means no EPA violations; a numbered badge counts that year's violations — red if any were health-based, amber if they were monitoring or paperwork issues. The system has 86 violations on record, including 0 health-based violations. 2 remain unresolved.

9 of the last ten years were clean. The numbered years had EPA violations — red when any were health-based, amber when they were paperwork or missed-testing issues.

2 monitoring & paperwork
UpdateWater quality data updatedLatest EPA compliance and testing data incorporated into Gap/Cedar Ridge/Bittersprings,Arizona's water quality assessment. Grade: A (92.2/100).
DisasterSEVERE STORMS AND FLOODINGFederal disaster declaration (FEMA DR-4620). Flood event — may have impacted local water infrastructure.
Violation2 drinking water violations recordedContaminants: TTHM, Total Haloacetic Acids (HAA5).Resolved
Violation1 drinking water violation recordedContaminants: Nitrate.Resolved
Violation30 drinking water violations recordedContaminants: Chlordane, Benzo(a)pyrene, 1,2-DIBROMO-3-CHLOROPROPANE.Resolved
DisasterHURRICANE KATRINA EVACUATIONFederal disaster declaration (FEMA DR-3241). Hurricane event — may have impacted local water infrastructure.
Lead, 90th percentileppb · lower is better
05101520EPA action level · 15 ppb1993 — 10 ppb1994 — 4 ppb1995 — 2 ppb2001 — 5 ppb2004 — 1 ppb2007 — 1 ppb2010 — 2 ppb2013 — 1 ppb2016 — 1 ppb2019 — 1 ppb2022 — 2.5 ppb102.519932001201020192022

Down 7.5 ppb since 1993. Latest reading: 2.5 ppb (2022) — 17% of the action level. Sampled at higher-risk homes (90th percentile).

04Where Gap/Cedar Ridge/Bittersprings,Arizona's water comes from

Gap/Cedar Ridge/Bittersprings,Arizona's drinking water is drawn from underground aquifers through wells.

Source

Groundwater

Underground aquifers reached by wells — naturally filtered, but can carry minerals like arsenic and nitrate.

Treatment

Local treatment

Groundwater generally needs less treatment — typically disinfection and, where needed, mineral removal.

Distribution

1 system

1 water system (1 wholesaler), operated under native american ownership.

Delivery

1,125 people

Residents served across Gap/Cedar Ridge/Bittersprings,Arizona's service area.

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 native american ownership and serves approximately 1,125 people through 1 water system.

System namePWSIDPopulationSource
Gap-Cedar Ridge NTUA NN0403009 1,125 Groundwater

05Pressure on Gap/Cedar Ridge/Bittersprings,Arizona's watershed

Outside forces that shape what reaches the treatment plant. None of these is a verdict on the tap by itself — but each adds pressure worth knowing about.

Flood & storm history

Recurring — declared disasters

6 federal disaster declarations on record for Apache County. Flooding and severe storms can overwhelm treatment plants, cause sewage overflows, and push runoff into supplies.

SEVERE STORMS AND FLOODING Sep 2021 · DR-4620
HURRICANE KATRINA EVACUATION Sep 2005 · DR-3241
SEVERE STORMS, TORNADOES & FLOODING Jan 1993 · DR-977

06How Gap/Cedar Ridge/Bittersprings,Arizona compares

Scores for nearby Arizona cities on one line, with the average marked.

Gap/Cedar Ridge/Bittersprings,Arizona (this city)
92.2 · A
Mesa
40.6 · F
Chandler
40.5 · F
Tucson
38.1 · F
Phoenix
37.5 · F
Gilbert
34.8 · F

dashed line = Arizona average (41/100)

Gap/Cedar Ridge/Bittersprings,Arizona scores 92.2/100above the Arizona average of 41/100. It outscores 10 of 10 nearby cities. Full Arizona rankings →

07What to do at home

Steps matched to what testing actually found in Gap/Cedar Ridge/Bittersprings,Arizona's water — not generic advice.

Extra protection

A basic carbon filter still helps

Gap/Cedar Ridge/Bittersprings,Arizona's water meets federal standards, but a simple carbon filter improves taste and adds a margin of safety against short-term issues.

Compare tested filters →
Know your report

Read your utility's annual report

Every utility must publish a yearly Consumer Confidence Report with its own testing results. It pairs well with the independent data on this page.

How to read a CCR →
Stay informed

Watch for Gap/Cedar Ridge/Bittersprings,Arizona alerts

This area has a history of flood declarations — after severe weather, watch for boil-water advisories from the utility, and check the live alerts on this page.

All water alerts →

Frequently asked questions

Is Gap/Cedar Ridge/Bittersprings,Arizona, AZ tap water safe to drink?

Gap/Cedar Ridge/Bittersprings,Arizona's water quality earned a grade of A (92.2/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #28 out of 271 cities tested in Arizona.

What contaminants are in Gap/Cedar Ridge/Bittersprings,Arizona's water?

Lead was measured at 2.5 ppb (90th percentile). 86 violations are on record.

How is Gap/Cedar Ridge/Bittersprings,Arizona'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 Gap/Cedar Ridge/Bittersprings,Arizona?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Gap/Cedar Ridge/Bittersprings,Arizona's water come from?

Gap/Cedar Ridge/Bittersprings,Arizona's water is sourced from Groundwater. The city has 1 water system serving approximately 1,125 residents.

Is Gap/Cedar Ridge/Bittersprings,Arizona's groundwater at risk of contamination?

Gap/Cedar Ridge/Bittersprings,Arizona 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 86 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 Gap/Cedar Ridge/Bittersprings,Arizona's water compare to other cities?

Gap/Cedar Ridge/Bittersprings,Arizona ranks #28 out of 271 cities in Arizona (better than 90% of state cities) and #1344 out of 15382 cities nationally (91th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Gap/Cedar Ridge/Bittersprings,Arizona's small water system affect quality?

Gap/Cedar Ridge/Bittersprings,Arizona's system serves approximately 1,125 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 86 violations on record.

Share this reportHelp others learn about their water quality
WhatsAppXFacebookLinkedInEmail
About Gap/Cedar Ridge/Bittersprings,Arizona, AZ: Fort Defiance is a census-designated place (CDP) in Apache County, Arizona, United States. It is also located within the Navajo Nation. The population was 3,624 at the 2010 census. Wikipedia → Sources: EPA SDWIS & ECHO · UCMR 3–5 · Lead & Copper Rule samples · EPA TRI · U.S. Drought Monitor · FEMA declarations. Data last updated Jul 2026. Analysis by the WaterVerge Editorial Team · methodology.