San Tan Anthem, Arizona
EPCOR 2025 Water Quality Report — San Tan Anthem (PWS AZ0411136 / PWS 11-136) serves about 4,500 connections from groundwater in the Pinal Active Management Area. Hardness 17–18 grains per gallon (FAQ only). Chlorine residual 1.28 ppm highest amount detected (range 1.13–1.28) in the 2025 regulated table. That is this PWS — not Anthem (AZ0407504). No Measure S-style residential softener ban turned up.
Arizona · Salt-softener legality
- Hardness17–18 gpg
- Chlorine1.28 ppm (range 1.13–1.28)
- Nitrate5.54 ppm (range 3.86–5.54)
- TTHMs5.6 ppb (ND–5.6)
- Arsenic2.5 ppb (range 2.3–2.5)
What to do in San Tan Anthem
Salt-based water softener
No district prohibition on a brine drain turned up.
A salt-based softener is the thing that actually removes hardness. Size it from your grains and how much water you use, not bathroom count. It needs a drain.
Hard water. A salt softener is the box that actually removes it.
Amazon lists shipping and returns on that product page. We do not warehouse the equipment.
Also for the kitchen
Under-sink reverse osmosis
Cloud RO is an under-sink reverse osmosis system — NSF/ANSI 58, kitchen tap, not a whole-house tank. The primary button is a tagged Amazon under-sink RO listing. Cloud buy-direct and Waterdrop sit under that. Check the exact listing if PFAS is why you are shopping. A certifier-listed pitcher is the cheap first step.
Buy Cloud RO directShop Waterdrop reverse osmosisShop PFAS-listed pitchers
Some links are affiliate links. If you buy through one, we may earn a commission. That does not change the match, and it is not a medical claim.
As an Amazon Associate we earn from qualifying purchases.
Other options that still fit
Salt-free conditioner
A salt-free conditioner changes how scale sticks. It does not soften. Soap and spots stay closer to untreated. No brine line.
Whole-house carbon for chlorine
That is chlorine. A whole-house carbon filter with an NSF/ANSI 42 chlorine claim is the usual match. A softener will not take chlorine out.
Test the tap first
A homeowner kit is a start. It is not a state-certified lab. Use a certified lab when the decision is expensive.
Softener vs carbon vs under-sink RO
A sketch for San Tan Anthem, tied to the best match above. Not a quote.
| Box | What it does | Ballpark (estimate) |
|---|---|---|
| Salt-based softenerBest match | Removes hardness. Needs a drain. Illegal in some sewer districts. | About $800–$2,500 for a common residential unit (equipment). Installed jobs run higher. |
| Whole-house carbon | Chlorine or chloramine taste — match the listing. Does not soften. | About $400–$1,800 for a typical tank-and-head kit (equipment). |
| Under-sink reverse osmosisBest match | Kitchen tap. Check NSF/ANSI 58 if PFAS or nitrate is why you are shopping. | About $200–$600 on Amazon search; named under-sink units vary. |
These are ballpark equipment ranges, not installed quotes and not what a dealer will write on a kitchen-table sheet. Prices move. Confirm the sewer rule before you price a brine tank.
On the report
- Water utility
- EPCOR San Tan Anthem
- Hardness
- 17–18 grains per gallon in the FAQ. The FAQ prints “The hardness in your water ranges from 17 to 18 grains per gallon (gpg)” and classifies Soft <1, Slightly Hard 1–3.4, Moderately Hard 3.5–6.9, Hard 7–10.4, Very Hard >10.5 gpg. The printed range is Very Hard on that scale. Hardness is in the FAQ only — no separate unregulated-table year row. We do not invent a sample year or a ppm conversion. — EPCOR 2025 Water Quality Report — San Tan Anthem (PWS AZ0411136)
- Disinfectant
- Chlorine residual 1.28 ppm highest amount detected (range 1.13–1.28), MCLG/MRDLG 4 / MRDL 4.0, year sampled 2025, regulated table leaving the treatment facility. Water additive used to control microbes. The FAQ says chlorine is added as a disinfectant — not chloramine. — EPCOR 2025 Water Quality Report — San Tan Anthem (PWS AZ0411136)
- Brine / salt to the sewer
- No district prohibition found in current research. No San Tan Anthem, Pinal County, or Arizona sanitation prohibition comparable to LACSD Measure S turned up in the research for the utility's report. Still ask the agency on the sewer bill before cutting a brine drain — rules change by jurisdiction, not by metro-area folklore.
How to get your water tested
The report on this page is for the public water system. It is not a test of the faucet in one house. Pipes inside a house can change the water.
For a test of your own tap, use a laboratory on the Arizona Department of Health Services list of certified drinking-water labs.
If your water comes from a private well, test it once a year. A city water report does not cover a private well.
Also around here
Extra context besides the utility report and the chart above — geology, an unregulated table, or a published study. Not a second set of printed tap numbers.
- MicroplasticsWHO’s 2019 review examined studies that found microplastic particles in treated tap and bottled water in many places. That is a published-occurrence finding, not a number from this city’s water-quality report, and we do not invent a particles-per-liter count for the tap.Microplastics in drinking-water — World Health Organization
San Tan Anthem drinking water is EPCOR San Tan Anthem (PWS AZ0411136), the system the report also labels PWS 11-136. The 2025 report says EPCOR provides connections to approximately 4,500 service connections in the San Tan Anthem system. Groundwater is the sole source, within the Pinal Active Management Area. The report’s recharge narrative is natural recharge from stream flows and incidental recharge from agricultural and urban uses. The system did not receive a Source Water Assessment Report — inactive or nonexistent when Adeq completed those assessments. This page is AZ0411136 chemistry — not Anthem (PWS AZ0407504), not Tubac, and not a San Tan Valley municipal blend.
No San Tan Anthem, Pinal County, or Arizona residential self-regenerating softener ban like LACSD Measure S turned up. Ask the agency on the sewer bill before you cut a brine drain. This is not a legal opinion, and it is not a statewide finding.
The FAQ prints that hardness ranges from 17 to 18 grains per gallon. It lists Soft less than 1, Slightly Hard 1 to 3.4, Moderately Hard 3.5 to 6.9, Hard 7 to 10.4, and Very Hard greater than 10.5 gpg. The printed range is Very Hard on that scale. Hardness is in the FAQ only. The report does not print a hardness sample year or hardness in ppm. We do not invent either.
Chlorine residual 1.28 ppm highest amount detected (range 1.13–1.28) on the 2025 regulated table leaving the treatment facility. MCLG/MRDLG 4 / MRDL 4.0. Water additive used to control microbes. The FAQ says chlorine is added as a disinfectant. That is free chlorine, not chloramine.
Also printed on the regulated leaving-the-plant table: TTHMs 5.6 ppb highest (range ND–5.6, MCL 80, 2025). Arsenic 2.5 ppb highest (range 2.3–2.5, MCL 10, year sampled 2024). Nitrate measured as nitrogen 5.54 ppm highest (range 3.86–5.54, MCL 10, 2025). The report’s footnote ² says nitrate above 10 ppm is a health risk for infants of less than six months of age, that high nitrate can cause blue baby syndrome, that levels may rise quickly because of rainfall or agricultural activity, and that if you are caring for an infant you should seek advice from your healthcare provider. That is the CCR’s printed note. We are not adding a medical claim. Barium 0.047 ppm (range ND–0.047, 2024). Selenium 2.7 ppb (range ND–2.7, 2024). Sodium 220 ppm (range 150–220, 2024). Gross alpha excluding radon and uranium 5.3 pCi/L (range 3.7–5.3, 2025). Combined radium 1.1 pCi/L (range ND–1.1, 2025). Lead 90th percentile ND and copper 0.047 ppm (2023; 23 samples; 0 above the action level).
PFAS leaving-the-plant table, 2025: PFOA 18.7 ppt (range ND–18.7); PFOS 0.96 ppt (range ND–0.96); PFHxS 0.54 ppt (range ND–0.54); PFNA 1.01 ppt (range ND–1.01); HFPO-DA/GenX ND; PFBS 24.0 ppt (range ND–24.0); Hazard Index 0.17 (range 0–0.17). EPA MCLs for these rows are effective 2029. Those are printed numbers, not a medical claim. Kitchen shopping stays the Cloud RO / Waterdrop path already used on other cities if a listing is why you are looking.
Questions we can answer from the report
How hard is San Tan Anthem tap water?
17–18 grains per gallon in the FAQ. The FAQ prints “The hardness in your water ranges from 17 to 18 grains per gallon (gpg)” and classifies Soft <1, Slightly Hard 1–3.4, Moderately Hard 3.5–6.9, Hard 7–10.4, Very Hard >10.5 gpg. The printed range is Very Hard on that scale. Hardness is in the FAQ only — no separate unregulated-table year row. We do not invent a sample year or a ppm conversion. Source: EPCOR 2025 Water Quality Report — San Tan Anthem (PWS AZ0411136).
Does San Tan Anthem use chlorine or chloramine?
Chlorine residual 1.28 ppm highest amount detected (range 1.13–1.28), MCLG/MRDLG 4 / MRDL 4.0, year sampled 2025, regulated table leaving the treatment facility. Water additive used to control microbes. The FAQ says chlorine is added as a disinfectant — not chloramine. Source: EPCOR 2025 Water Quality Report — San Tan Anthem (PWS AZ0411136).
Is a salt-based water softener legal in San Tan Anthem?
No district prohibition found. No San Tan Anthem, Pinal County, or Arizona sanitation prohibition comparable to LACSD Measure S turned up in the research for the utility's report. Still ask the agency on the sewer bill before cutting a brine drain — rules change by jurisdiction, not by metro-area folklore. No district prohibition on a brine drain turned up. This is not a legal opinion.
What should I do about San Tan Anthem tap water?
Salt-based water softener. A salt-based softener is the thing that actually removes hardness. Size it from your grains and how much water you use, not bathroom count. It needs a drain. If the job is drinking water at the kitchen, under-sink reverse osmosis is the usual path. Cloud RO is the preferred Amazon listing on this site (tag tapmatch-20). We do not claim we use it.
Sources
- 2025 Water Quality Report — San Tan Anthem (PWS AZ0411136) — EPCOR. Accessed 2026-09-29.
- Water quality reports (Arizona) — EPCOR. Accessed 2026-09-29.
Updated September 29, 2026. Numbers here are what the utility's report or the state record printed, plus the sewer rule. No invented detections.