Frequently Asked Questions about DSRSD Water and Sewer Accounts
Click a question to expand the answer.
What is AquaHawk?
The AquaHawk Customer Portal is a free online tool that provides 24/7 access to your DSRSD water account. You can see your water use, estimate your next bill, check for constant water flow that can indicate a leak, set thresholds for alerts, view and print past bills, sign up for Paperless Billing, and make one-time payments via Paymentus.
How do I use AquaHawk?
It's fast, free, and easy to register your account. If you need help, call us during business hours (925-828-8524) and we will register your account over the phone. Once you login, AquaHawk’s Online Help provides a good overview of all the features and simple instructions for using them. Just click “Help” in the upper right corner of the screen.
Why doesn’t my actual water bill match the last “Estimated Bill” amount on AquaHawk?
The consumption amount on your bill is the difference between the meter reading used for the previous billing period and the meter reading for the current billing period. We retrieve the meter reading approximately 7-10 days before we print bills. AquaHawk estimates are based on the dates of the bill cycle. That’s why your actual bill may be slightly different than the amounts in AquaHawk.
How can I pay my bill electronically?
Sign up for our FREE Autopay service that pays your bill on the due date with an electronic debit from your checking account. To sign up, call Customer Service during business hours: (925) 828-8524. When you call, please have available the bank account and routing numbers printed on your checks.
Make a one-time payment using your Visa, MasterCard, Discover, or checking account. To pay by phone, call (888) 287-9004. Paymentus charges a fee of $3.50 per transaction.
Where can I find an explanation of the charges on my bill?
Visit Your Bill for definitions of the charges on your bill and other important information about your DSRSD account. If you receive a paper bill in the mail, this information is printed on the back of the bill.
How often do I receive a water bill?
You receive six water bills per year, one every other month. Your bill will show the total number of days in the billing period.
What is the black device on the cover of my water meter box?
This is radio transmitter that sends your water use data to DSRSD several times a day. You can view your account’s water use data through the AquaHawk Customer Portal. Call us at (925) 828-8524 if you need help registering your account on AquaHawk.
My last bill shows that I used 20 billing units of water. How much water is that?
Water consumption is billed in 100 cubic foot (ccf) billing units. Each billing unit shown on your bill is equal to 748 gallons of water. Thus, 20 billing units of water is equivalent to: 20 x 748 = 14,960 gallons. On the AquaHawk Customer Portal you can view your current and historical water consumption information in both ccf and gallons.
Where can I find how much I pay for water and sewer services?
Rates for water and wastewater services are available on our website, and AquaHawk provides an estimate of your next bimonthly bill.
How am I billed for sewer services?
DSRSD bills individually metered residential dwellings for sewage collection and treatment on the owner’s annual property tax bill. The service charge is listed as DSRSD SEWER SVC on the property tax bill. Newly constructed residential dwellings may be billed on the bimonthly water bill until the next property tax bill. The District bills all other customers bimonthly.
Why does DSRSD bill residents for sewer service annually via property tax bills?
The process helps keep District rates low by eliminating unpaid residential sewer service bills. When special districts such as DSRSD collect fees through property tax rolls, they receive 100 percent of the amounts billed to property owners, regardless of the actual amounts collected. The counties charge the districts a per-property billing fee and assume both the risk of nonpayment and the rewards of penalties and interest. DSRSD’s fees for collecting and treating residential wastewater are largely determined by fixed costs that must be spread over all customers. Delinquent accounts unfairly penalize customers who pay on time and can lead to higher rates for everyone.
When did DSRSD start billing annually for residential sewer service?
In 2000 for southern San Ramon customers and in 2008 for Dublin customers.
Why are non-residential customers billed bimonthly for wastewater services?
Their sewer service charges vary in each bimonthly billing period. Businesses, schools, and industrial customers pay for sewer service based on the amount of water they use for domestic (indoor) purposes, plus “wastewater strength” factors that affect the cost of collecting and treating their sewage. In contrast, residential customers pay a flat annual charge based on the average cost per dwelling unit for sewage collection and treatment.
Who provides wastewater services in Dougherty Valley?
Why does the taste of our tap water sometimes change?
Many factors can affect the taste of water. DSRSD’s water is a blend of surface water and groundwater. The blend changes throughout the year and these variations can change taste and odor. Chlorine used to disinfect the water supply occasionally produces a chemical odor. Rapid algae growth in the delta can cause an earthy, musty, or plastic taste or odor. (Algae “blooms” can occur at any time but are most common from late spring through early fall.) These changes in taste or odor do not affect the safety of the water.
Rotting food in garbage disposal or bacteria in the P-trap under the drain can also cause a foul smell. To get rid of the odor, fill the sink with hot water, add an ounce of household bleach, and allow the water to drain slowly. If you have a water filter on your faucet or refrigerator, be sure to change it as often as recommended; otherwise, it becomes a breeding ground for bacteria that can make you sick.
Why does our water taste different than EBMUD's?
East Bay Municipal Utility District (EBMUD) gets most of its water from the Mokelumne River watershed and channels it into an aqueduct east of the Sacramento-San Joaquin Delta. The water never passes through the delta and that’s why it tastes different than DSRSD’s water, which is a blend of surface water that has flowed through the delta and groundwater extracted from local wells. DSRSD’s water will taste less like the delta once Zone 7 begins ozone treatment (see next question).
What is being done to improve water taste and address blue-green algae?
During warm months when algae blooms are more likely in the Delta, Zone 7 adds powdered activated carbon to the water to remove some of the harmless taste-and-odor-causing compounds, such as geosmin, released by algae.
The Department of Water Resources monitors for toxic compounds released by algae, including cyanotoxins produced by some blue-green algae, throughout the State Water Project. In addition, Zone 7 implemented its own algal toxins monitoring in 2016. Blue-green algae are appearing more frequently in water bodies such as the Delta and Lake Del Valle, which supply water to Zone 7.
A study of Zone 7’s source water identified ozone as the only effective treatment of such cyanotoxins. Zone 7 is designing improvements that will add ozone treatment to surface water provided to DSRSD and other Tri-Valley water retailers. In addition to removing algal toxins, ozonation will reduce disinfection by-products and improve the taste and odor of our water more effectively than current treatments. Provided that Zone 7 obtains construction financing, ozonation is scheduled to begin at the Del Valle treatment plant by 2019 and at the Patterson Pass plant by 2021.
How hard is our water?
Hardness is caused by naturally occurring minerals and is measured by the amount of calcium carbonate in the water, expressed either as milligrams per liter (mg/L) or grains per gallon (gpg). Our water is moderately hard to hard, with 90 percent of samples in the range of 115-324 mg/L (7-19 gpg). Because our water is a variable blend of surface and well water, hardness changes throughout the year and by location in the district. During shortages of surface water supplies (such as from the State Water Project), water hardness can be higher than normal because Zone 7 is blending in more groundwater. Zone 7 also may minimize operation of its demineralization plant to conserve water.
What is being done to improve water hardness?
Zone 7 uses a demineralization process to slow down the buildup of salts and minerals in our groundwater basin and reduce the hardness of groundwater pumped from the Mocho Wellfield in western Pleasanton. During water shortages, Zone 7 may minimize demineralization, since some water is lost during the process.
What do you advise about water softeners?
The District discourages customers from installing self-regenerating water softeners because they add excess amounts of salt to our wastewater, which in turn increases the salinity of recycled water used for irrigation. Learn more.
Does our tap water contain fluoride?
Yes. Nearly all water contains some fluoride, but usually not enough to help prevent tooth decay or cavities. Community water systems can add the right amount of fluoride to their local drinking water to prevent tooth decay. Voters in the District’s service area approved fluoridation in 1974 and treatment began in 1977.
DSRSD maintains the optimal level of 0.7 milligrams of fluoride per liter of water (mg/L) and a control range of 0.6 to 1.2 mg/L, as required by federal and state regulations. In 2015, the U.S. Department of Health and Human Services Agency recommended that water systems adjust their fluoride content to this new optimal level, as opposed to the previous temperature-dependent optimal levels ranging from 0.7 mg/L to 1.2 mg/L. There was no change regarding health officials' strong and long-standing support regarding the value of fluoridation of drinking water. More information on fluoridation is available on the Centers for Disease Control and Prevention and State Water Resources Control Board websites.
Is our water tested for lead?
Yes, both DSRSD and Zone 7 test for lead. In addition, Zone 7 adjusts the pH of our water to prevent plumbing corrosion, which is the main source of lead in tap water. Learn more.
Does our water meet safety standards for chromium 6?
Yes. As of July 1, 2014, California’s drinking water standard for chromium 6 allowed up to 10 parts per billion (ppb), and all the water DSRSD purchases from Zone 7 meets this standard. In May 2017, a court decision invalidated the standard, known as a maximum contaminant level (MCL). The court found that regulators had not properly considered the economic feasibility of complying with the MCL. The State Water Board is in the process of re-establishing an MCL for chromium 6. Until it does, chromium 6 is regulated by the 50 ppb MCL for total chromium. Visit the State Water Board’s chromium 6 information page for details.
Zone 7 has stated it will maintain operational procedures to keep chromium 6 below 10 ppb despite the court decision. Typically 80 percent of our drinking water supply consists of treated surface water from the State Water Project. Zone 7’s treatment process removes the chromium 6, if any, in that water. Zone 7 also uses groundwater from five well fields during the summer or when the surface water supply is interrupted. In 2016, the Chain of Lakes Well Field had chromium 6 levels up to 12 parts per billion. Per a state-approved blending plan, Zone 7 blends this well water with water from other sources so all the water flowing to customer taps has less than 10 ppb of chromium 6.
News reports have discussed California’s “public health goal” for chromium 6, which is 0.02 ppb. A public health goal is not a maximum “safe” level for exposure to a chemical. Rather, it estimates the “one in one million” lifetime cancer risk: for every million people who drink tap water with that level of chromium 6 each day for 70 years, there is likely to be one additional case of cancer from exposure to the chemical.
Public health goals are not drinking water standards, and no water agencies are required to meet them. The State Water Board sets the enforceable drinking water standard, the MCL, as close to the public health goal as possible after considering costs, benefits, and the ability of water utilities to detect and remove the contaminant during water treatment.
How often is water tested?
Samples collected from many places along the distribution pipelines are tested at least once a month for coliform bacteria, chlorine residuals, and fluoride. In addition, fluoride is monitored 24/7 online, and daily field samples are taken to ensure compliance with the operating range required by the state’s Division of Drinking Water (DDW). Field samples are also cross-checked weekly in the DSRSD lab. Other water quality parameters, including pH, hardness, alkalinity, conductivity, turbidity, and color, are monitored monthly. The level of total dissolved solids (TDS) is checked weekly. We monitor for other contaminants according to schedules established by DDW or other regulatory agencies. Zone 7 also performs many quality tests before it delivers the water to DSRSD.
Free viewers are required for some of the attached documents. They can be downloaded by clicking on the icons below.