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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
EPA records for SAHUARITA WATER COMPANY • Updated October 2026
Grade A — based on EPA compliance records, lead testing and PFAS monitoring
SAHUARITA WATER COMPANY has a clean recent record: no health-based violations in the last five years and no lead, PFAS or historical monitoring result that costs it more than a few points.
Yes — by EPA's records Sahuarita, AZ tap water is safe to drink and earns an A. The grade rests on arsenic averaging 8.2 ug/l against a 10 ug/l limit in 2012–2019 samples. Lead from your own service line or plumbing is the main risk city-level data cannot see, so homes built before 1986 should still test at the tap.
Yes — by EPA's records Sahuarita, AZ tap water is safe to drink and earns an A. The grade rests on arsenic averaging 8.2 ug/l against a 10 ug/l limit in 2012–2019 samples. Lead from your own service line or plumbing is the main risk city-level data cannot see, so homes built before 1986 should still test at the tap.
SAHUARITA WATER COMPANY's most recent Lead and Copper Rule result (2023-01-01 to 2025-12-31) was 0 ppb at the 90th percentile, below EPA's 15 ppb action level. Because lead usually comes from service lines and household plumbing, homes built before 1986 should still test at the tap.
No. None of the 58 UCMR5 PFAS results for SAHUARITA WATER COMPANY (2023-11-16 to 2024-05-15) were at or above the reporting limit of roughly 3–5 ppt.
SAHUARITA WATER COMPANY has 1 violation on file since 2016: 0 health-based in the last five years and 0 monitoring or reporting violations in that window. Monitoring violations are paperwork lapses, not measured contamination.
SAHUARITA WATER COMPANY reports groundwater as its primary source and serves about 18,178 people (EPA PWSID AZ0410312).
Optional but sensible. The findings on this page are below federal limits; an NSF-certified pitcher or under-sink filter handles arsenic and improves taste.
Compare filter options for your Sahuarita tap water
Historical monitoring (2012–2019) shows arsenic near or above the EPA limit in Sahuarita.
See the filters matched to Sahuarita's EPA results → — which certification actually removes what was found here, and what it does not touch.
Unsure which contaminants to treat? Compare home kits and certified lab testing before buying.
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SAHUARITA WATER COMPANY · SDWIS records since 2016 · 5-year window starts 2021-09-13
EPA records no health-based violations for this system in the last five years.
| Violation | Category | Compliance period | Status |
|---|---|---|---|
| Monitoring and Reporting (DBP)Chlorine | Monitoring & reporting | 2017-07-01 → 2017-09-30 | Resolvedreturned 2017-09-30 |
Source: ECHO SDWA bulk download (SDWA_VIOLATIONS_ENFORCEMENT.csv, SDWIS 2026Q2, file dated 2026-07-09, fetched 2026-09-13)
EPA Lead and Copper Rule 90th-percentile results reported by SAHUARITA WATER COMPANY
Well below the 15 ppb action level. In the most recent monitoring period on file (2023-01-01 to 2025-12-31), 90% of the homes SAHUARITA WATER COMPANY sampled had lead at or below 0 ppb.
EPA's action level is 15 ppb (dropping to 10 ppb under the 2024 Lead and Copper Rule Improvements). There is no safe level of lead; the 90th-percentile figure describes the system, not your tap — homes with lead service lines or pre-1986 plumbing can be higher.
| Monitoring period | Lead 90th percentile | vs 15 ppb action level |
|---|---|---|
| 2023-01-01 → 2025-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2020-01-01 → 2022-12-31 | 0.5 ppb | Well below the 15 ppb action level |
| 2017-01-01 → 2019-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2014-01-01 → 2016-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2011-01-01 → 2013-12-31 | 1 ppb | Well below the 15 ppb action level |
| 2008-01-01 → 2010-12-31 | 2 ppb | Well below the 15 ppb action level |
| 2007-01-01 → 2009-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2004-01-01 → 2006-12-31 | 5.7 ppb | Below the action level, but detectable |
Source: ECHO SDWA bulk download (SDWA_LCR_SAMPLES.csv, SDWIS 2026Q2, file dated 2026-07-09, fetched 2026-09-13)
EPA UCMR5 monitoring, 2023-11-16 to 2024-05-15 · 58 PFAS results at entry points to the distribution system
No PFAS detected. None of the 58 UCMR5 PFAS results for SAHUARITA WATER COMPANY were at or above the method reporting limit. Reporting limits are about 3–5 ppt, so “not detected” means below that threshold — not proven zero.
| Compound | Detects / samples | Max (ppt) | Reporting limit | EPA MCL |
|---|---|---|---|---|
| PFOA | 0 / 2 | < 4 | 4 ppt | 4 ppt |
| PFOS | 0 / 2 | < 4 | 4 ppt | 4 ppt |
| PFHxS | 0 / 2 | < 3 | 3 ppt | 10 ppt |
| PFNA | 0 / 2 | < 4 | 4 ppt | 10 ppt |
| HFPO-DA | 0 / 2 | < 5 | 5 ppt | 10 ppt |
| PFBS | 0 / 2 | < 3 | 3 ppt | hazard index only |
“< 4 ppt” means below the laboratory reporting limit, not zero. ppt = parts per trillion (ng/L). Results are for finished water leaving the treatment plant.
Lithium (also monitored under UCMR5, not a PFAS): detected in 2 of 2 samples, max 130 µg/L. There is no federal limit for lithium.
What PFAS are and how to remove them →
Source: UCMR5 occurrence data, EPA Data Summary July 2026 (UCMR5_All.txt)
EPA Six-Year Review 4 compliance samples for SAHUARITA WATER COMPANY · finished water only · dated data, released 2024
These are the regulated-contaminant samples SAHUARITA WATER COMPANY reported to its state between 2012 and 2019 — the most recent nationwide sample-level dataset EPA has published. Arsenic is flagged below; the status column explains why. Treat this as history, not today's tap water.
| Contaminant | Samples | Average | Max | EPA limit | Status |
|---|---|---|---|---|---|
| Arsenic | 35 | 8.191 µg/L | 9.6 µg/L | 10 µg/LMCL | Average above 80% of MCL |
| Nitrate (as N) | 98 detects | 1.422 mg/L | 2 mg/L | 10 mg/LMCL | Within MCL |
| Fluoride | 3 | 0.783 mg/L | 0.87 mg/L | 4 mg/LMCL | Within MCL |
| Chromium (total) | 30 detects | 0 µg/L | ND | 100 µg/LMCL | Not detected |
| Uranium (combined) | 1 | 2.7 µg/L | 2.7 µg/L | 30 µg/LMCL | Within MCL |
| Radium-226/228 | 10 detects | 0 pCi/L | ND | 5 pCi/LMCL | Not detected |
| Gross alpha | 1 | 1 pCi/L | 1 pCi/L | 15 pCi/LMCL | Within MCL |
| Total trihalomethanes (TTHM) | 1413 detects | 4.027 µg/L | 8.4 µg/L | 80 µg/LMCL (LRAA) | Within MCL |
| Haloacetic acids (HAA5) | 140 detects | 0 µg/L | ND | 60 µg/LMCL (LRAA) | Within MCL |
| Lead (tap samples) | 938 detects | 0.147 µg/L | 4 µg/L | 15 µg/Laction level (90th percentile) | Reported, not scored (compliance is on the 90th percentile) |
| Copper (tap samples) | 9386 detects | 18.791 µg/L | 100 µg/L | 1300 µg/Laction level (90th percentile) | Reported, not scored (compliance is on the 90th percentile) |
Averages count non-detects as zero. TTHM and HAA5 limits are locational running annual averages, so a single high sample is not a violation — we grade those on the average only. Lead and copper rows are individual tap samples and are shown for context; compliance (and our score) uses the 90th-percentile result above. LRAA = locational running annual average; ND = not detected.
Source: SYR4 Six-Year Review compliance monitoring data 2012–2019 (released 2024-03)
SAHUARITA WATER COMPANY · 7,134 service lines inventoried · Q2 2026 snapshot
SAHUARITA WATER COMPANY reports no lead or galvanized-requiring-replacement service lines and has classified 100% of its 7,134 lines as non-lead. Lead can still come from pre-1986 plumbing and fixtures inside a home.
Source: EPA SDWIS Service Line Inventory (Q2 2026) · PWS ID AZ0410312 · See all Arizona lead service lines. We may earn a commission from filters and test kits, at no extra cost to you.
Groundwater systems draw from wells; naturally occurring arsenic, nitrate, radium and uranium are the readings to watch, along with PFAS near industrial or military sites.
How to test your tap water and the treatment options that actually fit Sahuarita homes
The most reliable way to know what is actually coming out of your tap is a certified mail-in lab test. City-wide EPA data (like the report above) reflects the water leaving the treatment plant, but contaminants such as lead and copper can be picked up from your own service line and household plumbing — so the water at your Sahuarita faucet can differ from the system average. A state-certified lab measures dozens of contaminants at once with results you can trust; you can also find one near you through the EPA's certified-lab list at epa.gov/dwlabcert. Hardware-store test strips are cheaper and instant, but they only screen for a few basics (chlorine, hardness, pH, and a rough lead pass/fail) and are far less accurate — treat them as a first look, not a diagnosis.
Match the treatment to what your test finds. Reverse osmosis (RO) removes the widest range of contaminants — lead, arsenic, nitrate, PFAS, and dissolved solids — which makes an under-sink reverse osmosis system the most thorough choice for Sahuarita households with heavy-metal or PFAS concerns. If your main issue is taste, odor, or chlorine, an activated carbon filter (pitcher, faucet, or under-sink) is simpler and cheaper and handles chlorine and many organic compounds well, though carbon alone does not remove arsenic, nitrate, or most PFAS. NSF-certified pitchers rated for lead reduction are the easiest way to start today while you decide on a permanent setup.
We may earn a commission from testing kits and filters purchased through these links, at no extra cost to you.
What Sahuarita residents measured at their own tap (ZIPs 85629). All reader results →
Reader submissions are unverified and shown separately from EPA data. They reflect one tap on one day, not the utility's compliance record.
No reader results for Sahuarita yet - yours would be the first. A hardness or TDS number from a $10 strip kit is enough to start the map.
Help build the first reader-sourced water map. Enter whatever your test strip, TDS pen or lab report shows - one number is enough.
Sahuarita ranks #2 of 37 graded Arizona cities.
Deep-dive guides for the specific contaminants EPA data flagged in Sahuarita's water, with removal options for each.
Yes — by EPA's records Sahuarita, AZ tap water is safe to drink and earns an A. The grade rests on arsenic averaging 8.2 ug/l against a 10 ug/l limit in 2012–2019 samples. Lead from your own service line or plumbing is the main risk city-level data cannot see, so homes built before 1986 should still test at the tap.
SAHUARITA WATER COMPANY's most recent Lead and Copper Rule result (2023-01-01 to 2025-12-31) was 0 ppb at the 90th percentile, below EPA's 15 ppb action level. Because lead usually comes from service lines and household plumbing, homes built before 1986 should still test at the tap.
No. None of the 58 UCMR5 PFAS results for SAHUARITA WATER COMPANY (2023-11-16 to 2024-05-15) were at or above the reporting limit of roughly 3–5 ppt.
SAHUARITA WATER COMPANY has 1 violation on file since 2016: 0 health-based in the last five years and 0 monitoring or reporting violations in that window. Monitoring violations are paperwork lapses, not measured contamination.
SAHUARITA WATER COMPANY reports groundwater as its primary source and serves about 18,178 people (EPA PWSID AZ0410312).
Optional but sensible. The findings on this page are below federal limits; an NSF-certified pitcher or under-sink filter handles arsenic and improves taste.
Historical monitoring (2012–2019) shows arsenic near or above the EPA limit in Sahuarita.
Best for Arsenic Removal
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Filters rated for arsenic reduction
Waterdrop's arsenic collection — arsenic needs RO-class treatment, and these are the systems built for it.
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Based on contaminants detected in your water, these resources may be helpful:
Find the right filter for your Sahuarita water quality needs:
Tap water is one piece of the picture — our sister sites cover the rest for Sahuarita, AZ.
County radon prediction and EPA zone for homes around Sahuarita.
Arsenic and nitrate risk for homes on a well instead of city water.
Understand your water better with our in-depth guides on contaminants, filtration, and water safety.