Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Surprise, AZ 85387
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Maricopa County.
1 active health-based record(s) across possible systems
- Largest possible serving system
- Epcor - Agua Fria
- Source water
- Surface water + Groundwater
- County
- Maricopa County
- Profile updated
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 →At a glance
What the current records say
EPA quarter 2026Q2
All possible systems
Review needed
1 active health-based record
Measurements by utility
Each result belongs to a specific system.
Utility match
9 systems
Serves 127,718 people system-wide
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 - Agua Fria
AZ0407695 · Surface water · 127,718 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 (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
- Reported level
- 0 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2022 to Dec 31, 2024
Violation history (47)
| Rule | Status | Period |
|---|---|---|
| Revised Total Coliform RuleHealth-based | Unaddressed | Aug 24, 2025 |
| Surface Water Treatment Rule | Resolved | Jul 1, 2025 to Jul 31, 2025 |
| Arsenic | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Arsenic | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Nitrate | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| 2,4-D | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| 2,4-D | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| 2,4-D | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Arsenic | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Arsenic | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Arsenic | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Nitrate | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Arsenic | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Arsenic | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| 2,4-D | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| 2,4-D | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Lead and Copper RuleHealth-based | Resolved | Jan 1, 2022 to Jun 30, 2022 |
| Lead and Copper Rule | Resolved | Oct 1, 2021 to Nov 3, 2021 |
| Lead and Copper Rule | Resolved | Jul 1, 2021 to Jul 14, 2021 |
| Lead and Copper Rule | Resolved | Apr 3, 2021 to May 28, 2021 |
| Glyphosate | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Endrin | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Endothall | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Dinoseb | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Pentachlorophenol | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Simazine | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Heptachlor epoxide | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Carbofuran | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Di(2-ethylhexyl) phthalate | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Hexachlorocyclopentadiene | Archived | Jan 1, 2021 to Dec 31, 2023 |
| 2,4,5-TP | Archived | Jan 1, 2021 to Dec 31, 2023 |
| 2,3,7,8-TCDD | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Dalapon | Archived | Jan 1, 2021 to Dec 31, 2023 |
| BHC-GAMMA | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Heptachlor | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Atrazine | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Di(2-ethylhexyl) adipate | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Methoxychlor | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Picloram | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Benzo(a)pyrene | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Diquat | Archived | Jan 1, 2021 to Dec 31, 2023 |
| OXAMYL | Archived | Jan 1, 2021 to Dec 31, 2023 |
| LASSO | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Chlordane | Archived | Jan 1, 2021 to Dec 31, 2023 |
| 2,4-D | Archived | Jan 1, 2021 to Dec 31, 2023 |
| HEXACHLOROBENZENE | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Toxaphene | Archived | Jan 1, 2021 to Dec 31, 2023 |
Surprise City Of - Mountain Vista
AZ0407500 · Groundwater · 40,007 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
- 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 (2)
| Rule | Status | Period |
|---|---|---|
| DICHLOROMETHANE | Archived | Jan 1, 2026 to Mar 31, 2026 |
| DICHLOROMETHANE | Archived | Jan 1, 2026 to Mar 31, 2026 |
Desert Oasis
AZ0407523 · Groundwater · 23,963 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
- Reported level
- 0 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2022 to Dec 31, 2024
Violation history (2)
| Rule | Status | Period |
|---|---|---|
| DICHLOROMETHANE | Archived | Jan 1, 2026 to Mar 31, 2026 |
| DICHLOROMETHANE | Archived | Jan 1, 2026 to Mar 31, 2026 |
Beardsley Water Company 1
AZ0407007 · Groundwater · 10,263 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
- Reported level
- 0 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2022 to Dec 31, 2024
Violation history (4)
| Rule | Status | Period |
|---|---|---|
| Chlorine | Resolved | Apr 1, 2024 to Apr 30, 2024 |
| Revised Total Coliform Rule | Resolved | May 1, 2022 to Jun 23, 2022 |
| Chlorine | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Revised Total Coliform Rule | Resolved | May 1, 2021 to Jun 18, 2021 |
Surprise, City Of Buena Vista
AZ0407538 · Groundwater · 520 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
- Reported level
- 0 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2026 to Jun 30, 2026
Violation history (1)
| Rule | Status | Period |
|---|---|---|
| Revised Total Coliform Rule | Resolved | Mar 1, 2025 to May 5, 2025 |
Peak View Ranch
AZ0407528 · Groundwater · 508 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
- Reported level
- 0 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2023 to Dec 31, 2025
Violation history (3)
| Rule | Status | Period |
|---|---|---|
| Revised Total Coliform Rule | Resolved | Jan 1, 2026 to Jan 31, 2026 |
| Lead and Copper Rule | Unaddressed | Jan 1, 2025 |
| Revised Total Coliform Rule | Resolved | May 1, 2021 to Jun 18, 2021 |
Saguaro View Mgmt Company
AZ0407169 · Groundwater · 400 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
- 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 (7)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Resolved | Oct 2, 2025 to Nov 7, 2025 |
| Public Notice | Resolved | Mar 27, 2025 to Nov 10, 2025 |
| Public Notice | Resolved | Feb 1, 2025 to Mar 7, 2025 |
| Consumer Confidence Rule | Resolved | Jul 1, 2024 to Oct 17, 2024 |
| Revised Total Coliform Rule | Resolved | Feb 1, 2024 to Feb 29, 2024 |
| Revised Total Coliform Rule | Resolved | Jan 1, 2024 to Jan 31, 2024 |
| Chlorine | Resolved | Jan 1, 2024 to Jan 31, 2024 |
White Tank Well Inc
AZ0407549 · Groundwater · 87 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
- 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
Violation history (23)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Resolved | Oct 2, 2025 to Nov 7, 2025 |
| 1,2-Dichloroethane | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| CHLOROBENZENE | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| 1,2,4-Trichlorobenzene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Ethylbenzene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| p-Dichlorobenzene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Vinyl chloride | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| 1,1-Dichloroethylene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| DICHLOROMETHANE | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Tetrachloroethylene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Styrene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Xylenes, Total | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| 1,2-Dichloropropane | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| 1,1,2-Trichloroethane | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| trans-1,2-Dichloroethylene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Trichloroethylene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| cis-1,2-Dichloroethylene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Benzene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Toluene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| o-Dichlorobenzene | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| 1,1,1-Trichloroethane | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Carbon tetrachloride | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| Revised Total Coliform Rule | Resolved | Apr 1, 2024 to Apr 30, 2024 |
Two Tanks Community Well
AZ0407524 · Groundwater · 76 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
- 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
Violation history (15)
| Rule | Status | Period |
|---|---|---|
| Public Notice | Unaddressed | Feb 7, 2026 |
| Public Notice | Unaddressed | Nov 16, 2025 |
| Consumer Confidence Rule | Resolved | Oct 2, 2025 to Nov 7, 2025 |
| LEAD AND COPPER RULE REVISIONS | Unaddressed | Jul 2, 2025 |
| Public Notice | Unaddressed | Feb 14, 2025 |
| Arsenic | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Public Notice | Unaddressed | Dec 20, 2024 |
| LEAD AND COPPER RULE REVISIONS | Resolved | Oct 17, 2024 to Mar 14, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to Mar 14, 2025 |
| Arsenic | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2023 to Dec 28, 2023 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2023 to Nov 30, 2023 |
| Arsenic | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Arsenic | Archived | Jan 1, 2022 to Dec 31, 2022 |
| Arsenic | Archived | Jan 1, 2021 to Dec 31, 2021 |
Hardness meter
What does nearby environmental evidence show?
54
PPM as CaCO₃
Soft
PPM
54
GPG
3.2
Regional environmental evidence
USGS hardness classification scale
54 PPM
Soft
0–60Moderate
61–120Hard
121–180Very hard
181+
0–60Moderate
61–120Hard
121–180Very hard
181+
Parts per million
54
mg/L as CaCO₃ equivalent
Grains per gallon
3.2
1 GPG ≈ 17.1 PPM
How to use regional evidence
These samples describe nearby environmental water. They cannot establish whether your tap water is soft or hard. Use a utility result or a tap test for appliance settings and treatment sizing.
USGS sites used
6
Nearest site
13.7 mi
Observation range
Nov 29, 2018–Jul 26, 2022
Regional evidence confidence
Moderate
Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: ARROW-SKUNK CREEK @ 79TH AVENUE (NORTH BANK) (Stream).USGS source documentation ↗Evidence tier: Regional environmental evidence. This value is not used as proof of the serving utility's treated-water hardness.
Regional context
Is 85387 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Surprise median
54 PPM
About the same7 indexed ZIP readings · Range 33–64 PPM
Arizona median
64 PPM
10 PPM lower213 indexed ZIP readings · Range 33–2680 PPM
Evidence-first next steps
Confirm the problem before choosing treatment
This profile can help you ask the right question. It cannot select equipment for a property without a current result from the serving utility or the tap.
Confirm the serving system
ZIP boundaries and utility service areas do not perfectly match. Verify the system on a water bill before relying on system-wide records.
Read the current utility report
An active health-based record is present. Follow the utility's current notice and public-health instructions.
Find an official utility report →Test for the decision you face
Use a tap hardness test before sizing a softener. For health concerns, use a certified laboratory and the correct sampling protocol.
Convert your hardness test result →Nearby indexed reports
More local profiles in Surprise
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Surprise
Is tap water safe in Surprise?+
EPA ECHO reports 1 active health-based violation among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
How hard is the water?+
Utility-reported hardness is unavailable in this index. Regional samples do not establish tap-water hardness. Ask your provider or test your tap.
Do I need a water softener?+
Confirm hardness at your tap and consider actual scale or spotting before choosing treatment. Regional environmental values cannot determine whether you need a softener. A softener addresses hardness, not every contaminant.