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CALPORTLAND - RILLITO CEMENT PLANT

PWS ID: AZ0420011 · RILLITO, Arizona 85654

CALPORTLAND - RILLITO CEMENT PLANT serves 184 people in RILLITO, Arizona using Groundwater water sources. It has 152 recorded EPA violations, including 16 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: CALPORTLAND - RILLITO CEMENT PLANT

CALPORTLAND - RILLITO CEMENT PLANT is a private-owned non-transient non-community water system that delivers drinking water to 184 residents in RILLITO, Arizona (Pima County) through 12 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 152 total violations for this system , of which 16 (11%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 125 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 25 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. CALPORTLAND - RILLITO CEMENT PLANT's 152 violations sit below the Arizona average. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%). 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
184
Total Violations
152
Health-Based Violations
16
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
12
County
Pima
School/Daycare
No
MCL Violations
8
Monitoring Violations
125
Treatment Tech Violations
8

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 25 2015
Lead and Copper Rule MR 11 2023
Coliform (TCR) MCL 8 2015
Nitrate MR 7 2008
E. COLI MR 5 2024
LEAD AND COPPER RULE REVISIONS RPT 4 2024
Revised Total Coliform Rule RPT 4 2022
Groundwater Rule TT 4 2024
LEAD AND COPPER RULE REVISIONS TT 4 2024
BHC-GAMMA MR 2 2001
Dalapon MR 2 2001
Diquat MR 2 2001
Endothall MR 2 2001
Di(2-ethylhexyl) adipate MR 2 2001
Simazine MR 2 2001
Di(2-ethylhexyl) phthalate MR 2 2001
Picloram MR 2 2001
Atrazine MR 2 2001
LASSO MR 2 2001
2,4,5-TP MR 2 2001
HEXACHLOROBENZENE MR 2 2001
Pentachlorophenol MR 2 2001
ETHYLENE DIBROMIDE MR 2 2001
Dinoseb MR 2 2001
Hexachlorocyclopentadiene MR 2 2001
Revised Total Coliform Rule Other 2 2021
Toxaphene MR 2 2001
Carbofuran MR 2 2001
Chlordane MR 2 2001
Heptachlor MR 2 2001

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 CALPORTLAND - RILLITO CEMENT PLANT.

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 AZ0420011 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 CALPORTLAND - RILLITO CEMENT PLANT 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
2024 E. COLI MR 5 SDWIS / AZ0420011 / 3014
2024 LEAD AND COPPER RULE REVISIONS RPT 4 SDWIS / AZ0420011 / 5200
2024 Groundwater Rule TT 4 SDWIS / AZ0420011 / 0700
2024 LEAD AND COPPER RULE REVISIONS TT 4 SDWIS / AZ0420011 / 5200
2023 Lead and Copper Rule MR 11 SDWIS / AZ0420011 / 5000
2022 Revised Total Coliform Rule RPT 4 SDWIS / AZ0420011 / 8000
2021 Revised Total Coliform Rule Other 2 SDWIS / AZ0420011 / 8000
2015 Coliform (TCR) MR 25 SDWIS / AZ0420011 / 3100
2015 Coliform (TCR) MCL 8 SDWIS / AZ0420011 / 3100
2008 Nitrate MR 7 SDWIS / AZ0420011 / 1040
2001 BHC-GAMMA MR 2 SDWIS / AZ0420011 / 2010
2001 Dalapon MR 2 SDWIS / AZ0420011 / 2031
2001 Diquat MR 2 SDWIS / AZ0420011 / 2032
2001 Endothall MR 2 SDWIS / AZ0420011 / 2033
2001 Di(2-ethylhexyl) adipate MR 2 SDWIS / AZ0420011 / 2035

How CALPORTLAND - RILLITO CEMENT PLANT Compares

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

Metric CALPORTLAND - RILLITO CEMENT PLANT Arizona avg Federal benchmark
Total violations 152 153.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 16 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 184 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is CALPORTLAND - RILLITO CEMENT PLANT water safe to drink? ▼
CALPORTLAND - RILLITO CEMENT PLANT (PWS ID: AZ0420011) has 152 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 184 people using Groundwater sources.
How many people does CALPORTLAND - RILLITO CEMENT PLANT serve? ▼
CALPORTLAND - RILLITO CEMENT PLANT serves 184 people in RILLITO, Arizona. It is a Private-owned system using Groundwater water sources with 12 service connections.
What type of violations does CALPORTLAND - RILLITO CEMENT PLANT have? ▼
CALPORTLAND - RILLITO CEMENT PLANT has 152 total violations: 16 health-based violations (MCL exceedances or treatment failures), 125 monitoring/reporting violations, and 8 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in CALPORTLAND - RILLITO CEMENT PLANT water? ▼
No PFAS testing data is available for CALPORTLAND - RILLITO CEMENT PLANT under the EPA's UCMR5 monitoring program.
What water source does CALPORTLAND - RILLITO CEMENT PLANT use? ▼
CALPORTLAND - RILLITO CEMENT PLANT uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.

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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.

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