City water profile

Water hardness in Parker

Find official utility reports, understand hardness, and check the water system serving your home in Parker, Arizona.

Utility-reported hardness

Not yet available

Check your provider and source →

State comparison: Unavailable
Evidence comparison rank: —
Matched utilities: 7
Active health records: 1

Your tap water

What does the utility report?

Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.

Utility hardness unavailable in this index

Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.

Find an official utility report →

Convert a hardness result →Test your tap →

Match the name on your water bill

Your utility’s measurements and compliance records

These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.

EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.

Epcor - Lakeside

AZ0415010 · Surface water · 1,775 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2021 to Dec 31, 2023

Violation history (3)

Imported violation history for Epcor - Lakeside
Rule	Status	Period
Public Notice	Resolved	Jul 2, 2021 to Sep 28, 2021
Public Notice	Resolved	Jul 2, 2021 to Sep 28, 2021
Lead and Copper Rule	Resolved	Jan 1, 2021 to Feb 16, 2021

Epcor - Moovalya Keys

AZ0415006 · Surface water · 1,298 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (2)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.0062 mg/L
Action level: 0.015 mg/L

41% of the listed benchmark

Monitoring period: Jan 1, 2021 to Dec 31, 2023

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 1.62 mg/L
Action level: 1.3 mg/L

125% of the listed benchmark

Monitoring period: Jan 1, 2013 to Dec 31, 2015

Violation history (4)

Imported violation history for Epcor - Moovalya Keys
Rule	Status	Period
Lead and Copper Rule	Resolved	Oct 1, 2023 to Jan 9, 2024
Public Notice	Resolved	Jul 2, 2021 to Sep 10, 2021
Public Notice	Resolved	Jul 2, 2021 to Sep 10, 2021
Lead and Copper Rule	Resolved	Jan 1, 2021 to Feb 16, 2021

Epcor - Holiday Harbor

AZ0415058 · Surface water · 559 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2023

Violation history (9)

Imported violation history for Epcor - Holiday Harbor
Rule	Status	Period
Lead and Copper Rule	Resolved	Oct 1, 2023 to Feb 8, 2024
TTHM	Resolved	Nov 1, 2021 to Jan 31, 2022
Total Haloacetic Acids (HAA5)	Resolved	Nov 1, 2021 to Jan 31, 2022
Lead and Copper Rule	Resolved	Oct 1, 2021 to Oct 21, 2021
TTHM	Resolved	Oct 1, 2021 to Dec 31, 2021
Total Haloacetic Acids (HAA5)	Resolved	Oct 1, 2021 to Dec 31, 2021
Public Notice	Resolved	Jul 2, 2021 to Sep 28, 2021
Public Notice	Resolved	Jul 2, 2021 to Sep 28, 2021
Lead and Copper Rule	Resolved	Jan 1, 2021 to Feb 16, 2021

Epcor - Marina Village

AZ0415011 · Surface water · 528 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2023

Violation history (4)

Imported violation history for Epcor - Marina Village
Rule	Status	Period
TTHM	Unaddressed	Dec 30, 2024
Lead and Copper Rule	Resolved	Oct 1, 2021 to Oct 13, 2021
Public Notice	Resolved	Jul 2, 2021 to Jun 30, 2021
Lead and Copper Rule	Resolved	Jan 1, 2021 to Feb 16, 2021

Epcor - Parker Dam

AZ0415027 · Surface water · 429 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2023

Violation history (5)

Imported violation history for Epcor - Parker Dam
Rule	Status	Period
Lead and Copper Rule	Resolved	Oct 1, 2023 to Feb 27, 2024
Lead and Copper Rule	Resolved	Oct 1, 2021 to Oct 21, 2021
Public Notice	Resolved	Jul 2, 2021 to Sep 28, 2021
Public Notice	Resolved	Jul 2, 2021 to Sep 28, 2021
Lead and Copper Rule	Resolved	Jan 1, 2021 to Feb 16, 2021

Cienega Water Company Inc

AZ0415002 · Groundwater · 108 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

1 reported active health-based record(s) for this system

Find this utility’s official report →

Measurements (2)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2025 to Dec 31, 2025

Fluoride

EPA SDWIS reported health-based violation

Reported violation

Reported level: 4.6 MG/L
Maximum contaminant level: 4 MG/L

115% of the listed benchmark

Monitoring period: Apr 1, 2025 to Jun 30, 2025

Violation history (62)

Imported violation history for Cienega Water Company Inc
Rule	Status	Period
Public Notice	Unaddressed	Mar 4, 2026
Chlorine	Archived	Mar 1, 2026 to Mar 31, 2026
Chlorine	Archived	Feb 1, 2026 to Feb 28, 2026
Lead and Copper Rule	Resolved	Jan 1, 2026 to Mar 12, 2026
Chlorine	Archived	Jan 1, 2026 to Jan 31, 2026
Chlorine	Archived	Dec 1, 2025 to Dec 31, 2025
Public Notice	Unaddressed	Nov 15, 2025
Chlorine	Archived	Nov 1, 2025 to Nov 30, 2025
Consumer Confidence Rule	Unaddressed	Oct 2, 2025
Fluoride	Resolved	Oct 1, 2025 to Dec 31, 2025
Chlorine	Archived	Oct 1, 2025 to Oct 31, 2025
Revised Total Coliform Rule	Resolved	Sep 1, 2025 to Sep 30, 2025
Chlorine	Resolved	Sep 1, 2025 to Sep 30, 2025
Public Notice	Unaddressed	Jul 30, 2025
Consumer Confidence Rule	Unaddressed	Jul 1, 2025
Revised Total Coliform Rule	Resolved	May 1, 2025 to May 31, 2025
Public Notice	Unaddressed	Apr 1, 2025
FluorideHealth-based	Archived	Apr 1, 2025 to Jun 30, 2025
Chlorine	Resolved	Apr 1, 2025 to Apr 30, 2025
Public Notice	Unaddressed	Jan 16, 2025
Revised Total Coliform Rule	Resolved	Jan 1, 2025 to Jan 31, 2025
Fluoride	Resolved	Jan 1, 2025 to Mar 31, 2025
TTHM	Archived	Jan 1, 2025 to Dec 31, 2025
Total Haloacetic Acids (HAA5)	Archived	Jan 1, 2025 to Dec 31, 2025
Public Notice	Unaddressed	Dec 20, 2024
Chlorine	Resolved	Dec 1, 2024 to Dec 31, 2024
LEAD AND COPPER RULE REVISIONSHealth-based	Addressed	Oct 17, 2024
LEAD AND COPPER RULE REVISIONS	Addressed	Oct 17, 2024
Lead and Copper Rule	Resolved	Oct 1, 2024 to Nov 13, 2024
FluorideHealth-based	Archived	Oct 1, 2024 to Dec 31, 2024
Revised Total Coliform Rule	Resolved	Sep 1, 2024 to Nov 13, 2024
Revised Total Coliform Rule	Resolved	Jun 1, 2024 to Jun 30, 2024
Fluoride	Resolved	Apr 1, 2024 to Jun 30, 2024
Chlorine	Resolved	Apr 1, 2024 to Apr 30, 2024
Public Notice	Resolved	Mar 29, 2024 to Jun 27, 2024
Chlorine	Resolved	Jan 1, 2024 to Jan 31, 2024
Consumer Confidence Rule	Resolved	Oct 2, 2023 to Dec 18, 2023
Revised Total Coliform Rule	Resolved	Oct 1, 2023 to Oct 31, 2023
Chlorine	Resolved	Oct 1, 2023 to Dec 31, 2023
Public Notice	Resolved	Jul 20, 2023 to Dec 15, 2023
Public Notice	Resolved	Apr 21, 2023 to Dec 15, 2023
Public Notice	Resolved	Apr 8, 2023 to Dec 14, 2023
Public Notice	Resolved	Apr 8, 2023 to Dec 14, 2023
Revised Total Coliform Rule	Resolved	Apr 1, 2023 to Apr 30, 2023
Chlorine	Resolved	Apr 1, 2023 to Jun 30, 2023
Lead and Copper Rule	Resolved	Jan 1, 2023 to Dec 14, 2023
Chlorine	Resolved	Jan 1, 2023 to Mar 31, 2023
Revised Total Coliform Rule	Resolved	Dec 1, 2022 to Dec 31, 2022
Public Notice	Resolved	Oct 2, 2022 to Dec 15, 2023
Public Notice	Resolved	Oct 2, 2022 to Dec 15, 2023
Lead and Copper Rule	Resolved	Oct 1, 2022 to Jun 6, 2023
Chlorine	Resolved	Oct 1, 2022 to Dec 31, 2022
Chlorine	Resolved	Jul 1, 2022 to Sep 30, 2022
Chlorine	Resolved	Apr 1, 2022 to Jun 30, 2022
Chlorine	Resolved	Jan 1, 2022 to Mar 31, 2022
Lead and Copper Rule	Resolved	Oct 1, 2021 to Jun 6, 2023
Fluoride	Resolved	Oct 1, 2021 to Dec 31, 2021
Chlorine	Resolved	Oct 1, 2021 to Dec 31, 2021
Chlorine	Resolved	Jul 1, 2021 to Sep 30, 2021
Chlorine	Resolved	Apr 1, 2021 to Jun 30, 2021
Public Notice	Resolved	Jan 12, 2021 to Jan 26, 2021
Chlorine	Resolved	Jan 1, 2021 to Mar 31, 2021

Epcor - Rio Lindo

AZ0415040 · Surface water · 79 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2023

Violation history (3)

Imported violation history for Epcor - Rio Lindo
Rule	Status	Period
Lead and Copper Rule	Resolved	Oct 1, 2021 to Oct 15, 2021
Public Notice	Resolved	Jul 2, 2021 to Sep 10, 2021
Lead and Copper Rule	Resolved	Jul 1, 2021 to Jul 14, 2021

City summary

What the indexed records say

Parker has 1 published ZIP profile across La Paz County. The regional-evidence median is 330 PPM. The city does not meet the stricter comparison standard.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs

Moderately hard0 ZIPs

Hard0 ZIPs

Very hard1 ZIP

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 19.2 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Jul 17, 2024 to Jul 17, 2024.

ZIP directory

Water reports in Parker

Open a ZIP for site-level provenance and measurements.

ZIP code

85344

Very Hard

330 PPM

Nearest site: 19.2 mi
Confidence: Low

View full ZIP evidence →

Practical next steps

Move from index to evidence

1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
3. Use a measured hardness result. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other Arizona communities

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285 PPM median

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— No median

Vicksburg

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Fort Mohave

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Questions people ask

About water in Parker

Is the water hard?

Check the utility-reported result above when available. Nearby environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.