Padre Dam Municipal Water District
Santee, El Cajon, Lakeside, Spring Valley, Harbison Canyon, Flinn Springs, and adjacent eastern San Diego County communities
Population reference
93,859 people served by active California PWS CA3710037 in the current California Drinking Water Watch record, with approximately 21,960 residential and 1,393 commercial connections. Padre Dam purchases imported water from the San Diego County Water Authority and also receives supply from neighboring Helix Water District; its service area includes portions of Santee, El Cajon, Lakeside, Spring Valley, and unincorporated East County.
Billing detail
Broad public detail found
Official destination
Open provider website ↗Provider-specific findings
Billing and account research from public material
Provider-specific research notes are displayed separately from fields that contain only an unavailable-information marker. Read qualifiers in each note and verify current account terms with the provider.
- Billing frequency
- Monthly. Padre Dam bills water and/or sewer services each month; the first bill for a new customer is normally a partial bill before the account enters a complete cycle. Bills are due 15 days after the statement date, and AutoPay withdrawals are scheduled for 15 days after the statement date.
- Rate structure
- Increasing-block residential rates measured in HCF, where 1 HCF equals 748 gallons, with monthly meter/system charges, pumping or energy charges, an infrastructure-allocation charge, zone differences, and a possible Eastern Service Area property-tax credit. For water use on or after January 1, 2026 and bills mailed on or after February 1, 2026, the published residential tier rates are $9.78/HCF for Tier 1, $10.95/HCF for Tier 2, and $12.48/HCF for Tier 3. The published monthly allocations are MF: 0–7, 8–17, 18+ HCF; SF1: 0–9, 10–20, 21+; SF2: 0–14, 15–30, 31+; and SF3: 0–18, 19–40, 41+ HCF. The same 2026 table lists western-zone pumping rates of $0.52, $0.52, $1.03, $1.54, $2.06, and $2.58/HCF by zone and an ESA credit of $0.77/HCF for qualifying eastern customers.
- Residential cost reference
- A 5,000–7,000-gallon month is approximately 6.7–9.4 HCF. At the 2026 residential Tier 1 prices, the water-flow component is roughly $65–$92 per month before system, infrastructure-allocation, pumping/energy, elevation, and ESA-credit effects. A realistic water-only planning range is approximately $75–$135 per month for a typical 5/8-inch or 3/4-inch single-family account, but Padre Dam’s final amount varies materially by dwelling allocation, service zone, meter size, conservation tier, and fixed charges. Sewer, when billed by Padre Dam, is additional and is calculated under the separate sewer schedule.
- Wastewater and sewer calculation
- For a single-family residential customer, the 2025–2026 sewer schedule uses the average of the lowest daily water consumption from a full two-month back-to-back billing period in the preceding calendar year. The formula is the prior-year lowest units-per-day average multiplied by a 30-day month and the $4.67/HCF sewer rate, plus the $41.12 monthly base sewer fee. A new single-family customer without a full year of history is charged the published new-customer monthly fee of $73.81, and the published residential maximum is $97.16. Multi-family, commercial, government, and industrial accounts use EDU base charges, estimated return-to-sewer percentages, and strength-rate multipliers; the current schedule lists $34.13 per EDU for townhouses/condos, $27.97 per EDU for apartments/mobile-home parks, and $4.67/HCF before return-to-sewer and strength adjustments.
- Meter reading
- Padre Dam’s customer materials provide an Aquahawk water-use portal with hourly, daily, and weekly usage views and leak/continuous-flow alerts. The District’s current field-services job specification confirms an Advanced Metering Infrastructure (AMI) system with meters, radio registers, software, gateways, repeaters, network backhaul, and meter-management systems; it also describes handheld field computers and monthly reporting. Accordingly, Padre Dam uses AMI telemetry for usage monitoring and customer alerts while field staff maintain, troubleshoot, and schedule meter work. Customers remain responsible for plumbing beyond the customer side of the meter and should use Aquahawk alerts as an aid, not as a substitute for checking a suspected leak.
- New-account deposit
- Each applicant must establish creditworthiness or pay a security deposit. Padre Dam’s Rules and Regulations calculate the normal deposit as two times the highest bill for the property during the preceding 12 months, rounded up to the next $5 increment, with a $100 minimum; for new service, the District sets the amount from similar service types. The District may increase the deposit to as much as three times the highest bill for poor payment history, returned payments, meter tampering, bankruptcy, prior unpaid debt, or a prior termination for nonpayment. A deposit may be paid over up to three months if an authorized District manager approves. Deposits are refunded at account closure or after 24 consecutive billing periods with no more than two past-due payments, applied first to any balance, and earn no interest. The current fee schedule separately lists the minimum security deposit as $100.
- Activation or transfer fee
- The new-customer page says the first partial bill includes a $25 New Account Service charge and a $3.12 Utility Credit Check fee. The current Rules and Regulations classify establishment of a new or existing/transfer account as a $25–$30 service charge, depending on the applicable fee schedule, and require billing information, Social Security number for creditworthiness, and possibly photo identification. Start-service requests must be made by phone at least 24 business hours before the desired start date; Padre Dam cannot establish service online and does not accommodate same-day, holiday, or weekend requests. A $250 deposit may be required in lieu of an Owner Acknowledgment Form for tenant accounts, and a construction-meter establishment charge is separately listed at $40.
Context, not a score
How documentation coverage compares
This profile
100%
overview fields with research notes
California
67%
records with any overview detail
National index
50%
records with any overview detail
Coverage measures what this directory documented. It does not measure service quality, affordability, or regulatory compliance.
Research record
Broad public detail found
7 of 7 fields in this section contain provider-specific public detail in dataset August 1, 2026.
Documented
100%
Primary verification routes
- Padre Dam Municipal Water District public website ↗
Provider-controlled destination used to confirm current customer instructions.
- invoicecloud.com reference ↗
Public URL preserved in the compiled record. Confirm its publisher, date, and applicability before relying on it.
- csd.ca.gov reference ↗
Public URL preserved in the compiled record. Confirm its publisher, date, and applicability before relying on it.
- EPA SDWIS / ECHO lookup (CA3710037) ↗
Search the federal drinking-water database using public water system ID CA3710037.