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Community Water System · PWS AZ0411017

Florence Water Company

Florence, Arizona 85132 - drinking water served from groundwater sources to 15,900 people, tracked in EPA SDWIS and UCMR5.

15,900
People served
272
EPA violations
13
Health-based
3 PFAS
UCMR5 result

The verdict

EPA records 272 drinking-water violations at Florence Water Company, 5% of them health-based - above the Arizona per-system average, and UCMR5 testing detected 3 PFAS compounds.

272
Total EPA violations on record
5%
Health-based (MCL / treatment failure)
15,900
People served by this system
3
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Florence Water Company

Florence Water Company is a local-owned community water system that delivers drinking water to 15,900 residents in Florence, Arizona (Pinal County) through 3,590 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 272 total violations for this system , of which 13 (5%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 228 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 Nitrate, recorded in 38 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 3 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 60 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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%).

Florence Water Company's 272 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.

PFAS Detected

3 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
15,900
Total Violations
272
Health-Based Violations
13
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
3,590
County
Pinal
School/Daycare
No
MCL Violations
13
Monitoring Violations
228
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 38 2019
Chlorine MR 26 2018
Consumer Confidence Rule Other 20 2025
Coliform (TCR) MR 19 2008
Coliform (TCR) MCL 12 2012
Lead and Copper Rule MR 8 2025
TTHM MR 6 2025
Total Haloacetic Acids (HAA5) MR 6 2025
Endrin MR 4 2006
Toxaphene MR 4 2006
E. COLI MR 3 2016
1,2,4-Trichlorobenzene MR 3 2003
1,2-Dichloroethane MR 3 2003
Carbon tetrachloride MR 3 2003
1,2-Dichloropropane MR 3 2003
1,1,2-Trichloroethane MR 3 2003
Toluene MR 3 2003
Xylenes, Total MR 3 2003
o-Dichlorobenzene MR 3 2003
trans-1,2-Dichloroethylene MR 3 2003
1,1,1-Trichloroethane MR 3 2003
Tetrachloroethylene MR 3 2003
Benzene MR 3 2003
Ethylbenzene MR 3 2003
cis-1,2-Dichloroethylene MR 3 2003
p-Dichlorobenzene MR 3 2003
1,1-Dichloroethylene MR 3 2003
CHLOROBENZENE MR 3 2003
DICHLOROMETHANE MR 3 2003
Trichloroethylene MR 3 2003

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 6 of 232 samples detected PFAS.

Contaminant Date Result MRL Status
PFTrDA 9/5/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 9/5/2023 <8.00 ppt 8.00 ppt Not Detected
NMeFOSAA 9/5/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 9/5/2023 <5.00 ppt 5.00 ppt Not Detected
PFPeS 9/5/2023 <4.00 ppt 4.00 ppt Not Detected
HFPO-DA 9/5/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 9/5/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/5/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 9/5/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/5/2023 <20.00 ppt 20.00 ppt Not Detected
PFHpS 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
ADONA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 9/5/2023 <4.00 ppt 4.00 ppt Not Detected
9Cl-PF3ONS 9/5/2023 <2.00 ppt 2.00 ppt Not Detected
PFBA 9/5/2023 9.00 ppt 5.00 ppt Detected
PFBS 9/5/2023 60.00 ppt 3.00 ppt Detected
PFHpA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/5/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 9/5/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 9/5/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/5/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxS 9/5/2023 7.00 ppt 3.00 ppt Detected
PFHpS 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 9/5/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 9/5/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 9/5/2023 <7.00 ppt 7.00 ppt Not Detected
PFPeS 9/5/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 9/5/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 9/5/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 9/5/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/5/2023 <5.00 ppt 5.00 ppt Not Detected
PFNA 9/5/2023 <4.00 ppt 4.00 ppt Not Detected
PFBS 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 9/5/2023 <8.00 ppt 8.00 ppt Not Detected
PFBA 9/5/2023 <5.00 ppt 5.00 ppt Not Detected
PFHpA 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 9/5/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 9/5/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 9/5/2023 <4.00 ppt 4.00 ppt Not Detected

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 Florence 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 AZ0411017 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 Florence 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 Consumer Confidence Rule Other 20 SDWIS / AZ0411017 / 7000
2025 Lead and Copper Rule MR 8 SDWIS / AZ0411017 / 5000
2025 TTHM MR 6 SDWIS / AZ0411017 / 2950
2025 Total Haloacetic Acids (HAA5) MR 6 SDWIS / AZ0411017 / 2456
2019 Nitrate MR 38 SDWIS / AZ0411017 / 1040
2018 Chlorine MR 26 SDWIS / AZ0411017 / 0999
2016 E. COLI MR 3 SDWIS / AZ0411017 / 3014
2012 Coliform (TCR) MCL 12 SDWIS / AZ0411017 / 3100
2008 Coliform (TCR) MR 19 SDWIS / AZ0411017 / 3100
2007 Nitrate MCL 1 SDWIS / AZ0411017 / 1040
2006 Endrin MR 4 SDWIS / AZ0411017 / 2005
2006 Toxaphene MR 4 SDWIS / AZ0411017 / 2020
2006 Methoxychlor MR 2 SDWIS / AZ0411017 / 2015
2006 Dalapon MR 2 SDWIS / AZ0411017 / 2031
2006 Endothall MR 2 SDWIS / AZ0411017 / 2033

How Florence Water Company Compares

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

Metric Florence Water Company Arizona avg Federal benchmark
Total violations 272 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 13 10.5 Indicates a contaminant exceeded a federal MCL
PFAS detection 3 compounds 95.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 15,900 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 Florence Water Company water safe to drink? ▼
Florence Water Company (PWS ID: AZ0411017) has 272 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 3 PFAS compounds found. This system serves 15,900 people using Groundwater sources.
How many people does Florence Water Company serve? ▼
Florence Water Company serves 15,900 people in Florence, Arizona. It is a Local-owned system using Groundwater water sources with 3,590 service connections.
What type of violations does Florence Water Company have? ▼
Florence Water Company has 272 total violations: 13 health-based violations (MCL exceedances or treatment failures), 228 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Florence Water Company water? ▼
Yes. UCMR5 testing detected 3 PFAS compounds in Florence Water Company's water supply: PFBA, PFBS, PFHxS. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Florence Water Company use? ▼
Florence 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). 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.