Pinal County · Arizona · EPA SDWIS 2026Q2
Johnson Ranch Water Quality
What's in Johnson Ranch's water
PFAS (forever chemicals)
4.8×above guideline
Detected above the EPA's 4 ppt limit for PFOA/PFOS — the "forever chemicals" linked to cancer and immune effects. Compounds found: PFBA, PFBS, PFHpA, PFHxA, PFOA, PFPeA.
Nitrate
Violation on record
10 EPA violations on record (most recent 2024). Nitrate enters water mainly from fertilizer runoff, septic systems, and animal waste. High levels can interfere with the blood's ability to carry oxygen, a special danger for infants. Long-term low-level exposure has also been linked to elevated cancer risk in some studies.
Water hardness
very hard
Johnson Ranch's water is very hard. Hardness isn't a health risk, but it drives scale on fixtures and water heaters, shortens appliance life, and leaves skin and hair dry.
Your water provider
EPCOR - SAN TAN
- Population served
- 87,435
- PWSID
- AZ0411128
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