Community Water System · PWS AZ0401049

Cedar Grove Water Company

Tucson, Arizona 85754 - drinking water served from groundwater sources to 1,564 people, tracked in EPA SDWIS and UCMR5.

Compiled by PlainWater Editorial, Drinking Water Quality Editorial Team · May 15, 2026

1,564
People served: 196
EPA violations: 6
Health-based: Untested
UCMR5 result

The verdict

EPA records 196 drinking-water violations at Cedar Grove Water Company, 3% of them health-based - above the Arizona per-system average.

196
Total EPA violations on record: 3%
Health-based (MCL / treatment failure): 1,564
People served by this system: N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Cedar Grove Water Company

Cedar Grove Water Company is a private-owned community water system that delivers drinking water to 1,564 residents in Tucson, Arizona (Apache County) through 523 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 196 total violations for this system , of which 6 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 160 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 30 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Arizona, EPA tracks 1,493 public water systems serving 7,322,166 people, with 228,944 cumulative violations and 15,663 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 153.3 violations. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%).

Cedar Grove Water Company's 196 violations sit above the Arizona average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served

1,564

Total Violations

196

Health-Based Violations

Water Source

Groundwater

System Details

System Type: Community
Owner Type: Private
Connections: 523
County: Apache
School/Daycare: No
MCL Violations: 6
Monitoring Violations: 160
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Coliform (TCR)	MR	30	2015
Consumer Confidence Rule	Other	16	2020
Nitrate	MR	9	2008
Revised Total Coliform Rule	MON	8	2025
Lead and Copper Rule	MR	7	2021
Coliform (TCR)	MCL	6	2013
DICHLOROMETHANE	MR	4	2004
o-Dichlorobenzene	MR	4	2004
p-Dichlorobenzene	MR	4	2004
1,1-Dichloroethylene	MR	4	2004
Carbon tetrachloride	MR	4	2004
1,2-Dichloropropane	MR	4	2004
Trichloroethylene	MR	4	2004
Benzene	MR	4	2004
Ethylbenzene	MR	4	2004
Styrene	MR	4	2004
trans-1,2-Dichloroethylene	MR	4	2004
1,1,1-Trichloroethane	MR	4	2004
1,1,2-Trichloroethane	MR	4	2004
Toluene	MR	4	2004
E. COLI	MR	4	2020
Revised Total Coliform Rule	RPT	4	2023
cis-1,2-Dichloroethylene	MR	4	2004
CHLOROBENZENE	MR	4	2004
1,2-Dichloroethane	MR	4	2004
Tetrachloroethylene	MR	4	2004
Vinyl chloride	MR	3	2004
Xylenes, Total	MR	3	2004
Radium-226	MR	3	2004
Radium-228	MR	3	2004

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Cedar Grove Water Company.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID AZ0401049 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Arizona Drinking Water Authority

Arizona DEQ, Drinking Water Program is the primacy agency that licenses and inspects Cedar Grove Water Company under EPA-delegated authority.

Open AZ regulator portal

Source: Arizona DEQ, Drinking Water Program

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest)	Contaminant	Category	Count	EPA Record
2025	Revised Total Coliform Rule	MON	8	SDWIS / AZ0401049 / 8000
2023	Revised Total Coliform Rule	RPT	4	SDWIS / AZ0401049 / 8000
2021	Lead and Copper Rule	MR	7	SDWIS / AZ0401049 / 5000
2020	Consumer Confidence Rule	Other	16	SDWIS / AZ0401049 / 7000
2020	E. COLI	MR	4	SDWIS / AZ0401049 / 3014
2015	Coliform (TCR)	MR	30	SDWIS / AZ0401049 / 3100
2013	Coliform (TCR)	MCL	6	SDWIS / AZ0401049 / 3100
2008	Nitrate	MR	9	SDWIS / AZ0401049 / 1040
2004	DICHLOROMETHANE	MR	4	SDWIS / AZ0401049 / 2964
2004	o-Dichlorobenzene	MR	4	SDWIS / AZ0401049 / 2968
2004	p-Dichlorobenzene	MR	4	SDWIS / AZ0401049 / 2969
2004	1,1-Dichloroethylene	MR	4	SDWIS / AZ0401049 / 2977
2004	Carbon tetrachloride	MR	4	SDWIS / AZ0401049 / 2982
2004	1,2-Dichloropropane	MR	4	SDWIS / AZ0401049 / 2983
2004	Trichloroethylene	MR	4	SDWIS / AZ0401049 / 2984

How Cedar Grove Water Company Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric	Cedar Grove Water Company	Arizona avg	Federal benchmark
Total violations	196	153.3	SDWA compliance, any non-zero count is a recorded breach
Health-based violations	6	10.5	Indicates a contaminant exceeded a federal MCL
PFAS detection	None	95.4%	EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served	1,564	4,904	Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,493 regulated public water systems in Arizona.

Federal MCL reference, Safe Drinking Water Act thresholds ▼

Contaminant	Federal MCL / Action Level	Note
Lead	0 mg/L (Action Level: 0.015 mg/L)	Lead and Copper Rule treatment technique
Arsenic	0.010 mg/L (10 ppb)	Health-based MCL since 2006
Total Coliform	Treatment technique (RTCR)	Indicator organism, monitoring trigger
PFOA / PFOS (PFAS)	4.0 ppt each (final 2024 rule)	Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N)	10 mg/L	Acute health risk for infants

Frequently Asked Questions

Is Cedar Grove Water Company water safe to drink? ▼

Cedar Grove Water Company (PWS ID: AZ0401049) has 196 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,564 people using Groundwater sources.

How many people does Cedar Grove Water Company serve? ▼

Cedar Grove Water Company serves 1,564 people in Tucson, Arizona. It is a Private-owned system using Groundwater water sources with 523 service connections.

What type of violations does Cedar Grove Water Company have? ▼

Cedar Grove Water Company has 196 total violations: 6 health-based violations (MCL exceedances or treatment failures), 160 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in Cedar Grove Water Company water? ▼

No PFAS testing data is available for Cedar Grove Water Company under the EPA's UCMR5 monitoring program.

What water source does Cedar Grove Water Company use? ▼

Cedar Grove Water Company uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Where does this data come from? ▼

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.