Phoenix Water Bill Estimator
Estimate your monthly City of Phoenix water bill using the official tiered rate schedule for residential and commercial customers. Rates reflect the City of Phoenix Water Services Department fee structure.
Average Phoenix household uses ~6,000–8,000 gallons/month
Phoenix caps sewer billing at 15,000 gal/month for residential
Enter your usage above to estimate your bill.
Formula
Total Bill = Base Service Charge + Commodity Charge [+ Sewer Charge]
Residential Commodity (tiered, per 1,000 gallons):
- Tier 1: 0–3,000 gal → $2.84/Kgal
- Tier 2: 3,001–6,000 gal → $3.55/Kgal
- Tier 3: 6,001–15,000 gal → $4.44/Kgal
- Tier 4: >15,000 gal → $5.55/Kgal
Commercial Commodity (tiered, per 1,000 gallons):
- Tier 1: 0–3,000 gal → $2.84/Kgal
- Tier 2: 3,001–15,000 gal → $3.55/Kgal
- Tier 3: >15,000 gal → $4.44/Kgal
Sewer Charge = $8.22 (base) + $2.18 × Kgal billed
Residential sewer usage is capped at 15,000 gallons/month.
Base Service Charges by Meter Size: 5/8" or 3/4" = $4.10 | 1" = $6.84 | 1.5" = $13.67 | 2" = $21.87 | 3" = $43.74
Assumptions & References
- Rates based on City of Phoenix Water Services Department Schedule WS-1 (Residential) and WS-2 (Commercial), effective July 2024.
- Sewer rates based on City of Phoenix Sewer Service Schedule SS-1 (2024).
- Residential sewer billing is capped at 15,000 gallons per month per City of Phoenix policy.
- Base service charges are fixed monthly fees regardless of usage.
- Commodity charges are cumulative and tiered — only usage within each tier is billed at that tier's rate.
- This estimator does not include: fire protection charges, recycled water rates, construction meters, late fees, or applicable taxes.
- Average Phoenix single-family household uses approximately 6,000–8,000 gallons per month (City of Phoenix Water Services).
- Reference: phoenix.gov/waterservices/customerservices/rates