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City water profile

Three Points water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Three Points, Arizona.

Median indexed hardness

227PPM

2 indexed ZIPs

Range 209.5–244 PPM

State comparison
14 PPM below
State hardness rank
#105 of 133
Matched utilities
5
Active health records
0

City summary

What the indexed records say

Three Points has 2 published ZIP profiles across Pima County. The indexed median is 227 PPM, compared with 241 PPM across Arizona.

Among the 133 Arizonacities with an indexed median, Three Points ranks #105from highest to lowest. Across all 285 state ZIP profiles, available estimates run from 66.4to 1250 PPM.

The 209.5–244 PPM range shows how much the available ZIP estimates vary within the city label. 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 hard2 ZIPs

2 of 2 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
34.3 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 1Low: 1

Observation window: Jan 11, 2016 to Mar 31, 2026.

ZIP directory

Water reports in Three Points

Open a ZIP for site-level provenance and measurements.

ZIP code

85735

Very Hard

209.5 PPM

Nearest site
19.8 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

85736

Very Hard

244 PPM

Nearest site
34.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Thim Utility Company

PWSID AZ0410117

Groundwater
System population served
310
Last reported
May 14, 2026

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

Thim Utility Company - Well 9

PWSID AZ0410206

Groundwater
System population served
254
Last reported
May 14, 2026

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

Wildflower Water Coop

PWSID AZ0410265

Groundwater
System population served
157
Last reported
May 14, 2026

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

Gw Saguaro Dist Water Co - Amber Ann

PWSID AZ0410317

Groundwater
System population served
108
Last reported
May 14, 2026

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

Worden Water Company

PWSID AZ0410132

Groundwater
System population served
60
Last reported
May 14, 2026

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

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Revised Total Coliform RuleAZ0410132Mar 1, 2026Unaddressed
LEAD AND COPPER RULE REVISIONSAZ0410132Jul 2, 2025Unaddressed
Total Haloacetic Acids (HAA5)AZ0410206Jan 1, 2025Archived
TTHMAZ0410206Jan 1, 2025Archived
Lead and Copper RuleAZ0410132Oct 1, 2024Resolved
Lead and Copper RuleAZ0410265Jan 1, 2024Resolved
Public NoticeAZ0410132Jan 1, 2024Resolved
Revised Total Coliform RuleAZ0410132Jan 1, 2024Resolved
NitrateAZ0410132Jan 1, 2024Resolved
E. COLIAZ0410132Aug 8, 2023Resolved

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Three Points

Is the water hard?

The indexed city median is 227 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

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.