Water and Wastewater Rates

Each Moulton Niguel customer is allocated a personalized water budget based on your individualized needs. The rate structure for water service fees has five customer classes: residential, multi-family, commercial, irrigation, and recycled.

This structure is comprised of two components: a fixed monthly service charge and a variable volumetric water consumption charge. The rates for the fixed monthly service charge are established on the basis of the size of the water meter serving a property and are calculated to recover a significant portion of the District’s fixed costs. The rates for the variable volumetric charge are based on the number of units of water delivered to a property and consist of five tiers which result in higher rates as the amount of water consumption increases.

* Classifications are subject to change upon inspection by the District in order to comply with the intent of MNWD’s Rules and Regulations and regulatory mandates

For more information about wastewater rates, please contact our Billing Department at (949) 448-4050.

CLICK HERE TO LEARN MORE ABOUT mnwd’s water budget-based rate structure

 The Moulton Niguel Water District will hold a Public Hearing concerning proposed increases and adjustments in the rates for its potable water, recycled water, and wastewater services on December 11, 2025.

Click here for notices and relevant information regarding the proposed rates

The Moulton Niguel Water District approved current rates in December 2025.

READ OUR 2026 PROP 218 NOTICE FOR DETAILED INFORMATION

Beginning January 1, 2025, an additional 14-cent Wholesale Pass-Through Rate will be charged for each unit of potable water.

click here for Frequently asked questions about the wholesale pass-through rate

Single-Family Residential customers are given an indoor and an outdoor water budget based on individual calculations. Your bill is composed of fixed and variable charges for water, wastewater, and recycled water services.

FEES & CHARGES: WATER RATES & SERVICE CHARGES

Monthly Service Charge: The fixed fee for providing water service to your property, based on the size of your water meter. This fee recovers fixed costs, such as infrastructure repairs and maintenance.

Volumetric Charge: The variable fee based on the amount of water you use. This fee recovers the cost of each unit of water delivered to your property.

Single-Family Residential Rates for Monthly Water Service Charges ($/Meter)

Meter Size

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

5/8″

$11.13

$12.12

$13.20

$14.37

3/4″

$11.13

$12.12

$13.20

$14.37

1″

$11.13

$12.12

$13.20

$14.37

1.5″

$36.38

$39.64

$43.16

$46.98

2″

$58.03

$63.22

$68.85

$74.94

3″

$126.60

$137.93

$150.20

$163.50

4″

$216.81

$236.21

$257.23

$279.99

6″

$451.37

$491.75

$535.51

$582.91

8″

$649.84

$707.97

$770.98

$839.21

10″

$1,046.78

$1,140.42

$1,241.91

$1,351.82
Single-Family Residential Water Rates for Volumetric Charges – Per Billing Unit

Tier

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

Tier 1

$2.76

$3.06

$3.41

$3.62

Tier 2

$3.34

$3.70

$4.12

$4.39

Tier 3

$4.75

$5.11

$5.53

$5.80

Tier 4

$7.26

$7.62

$8.04

$8.30

Tier 5

$11.31

$11.67

$12.09

$12.36

FEES & CHARGES: WASTEWATER RATES & SERVICE  CHARGES

Monthly Service Charge: The fixed fee for providing wastewater service to your property, based on the size of your water meter. This fee recovers fixed costs, such as infrastructure repairs and maintenance.

Volumetric Charge: For single-family residential customers, the fee is based on the number of people receiving service in your household.

Single-Family Residential Rates for Monthly WasteWater Service Charges

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

$28.88

$32.20

$35.90

$40.03

Single-Family Residential Rates for Per Person Wastewater Charges

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

$5.89 per person

$6.57 per person

$7.33 per person

$8.17 per person

Multi-family residential customers are given an indoor and an outdoor water budget based on individual calculations. Your bill is composed of fixed and variable charges for water, wastewater, and recycled water services.

FEES & CHARGES: WATER RATES & SERVICE CHARGES

Monthly Service Charge: The fixed fee for providing water service to your property, based on the size of your water meter. This fee recovers fixed costs, such as infrastructure repairs and maintenance.

Volumetric Charge: The variable fee based on the amount of water you use. This fee recovers the cost of each unit of water delivered to your property.

Multi-Family Residential Rates for Monthly Water Service Charges ($/Meter)

Meter Size

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

5/8″

$12.31

$13.41

$14.60

$15.89

3/4″

$12.31

$13.41

$14.60

$15.89

1″

$12.31

$13.41

$14.60

$15.89

1.5″

$25.76

$28.06

$30.56

$33.27

2″

$37.29

$40.63

$44.24

$48.16

3″

$73.82

$80.42

$87.58

$95.33

4″

$121.87

$132.77

$144.59

$157.38

6″

$246.81

$268.89

$292.82

$318.74

8″

$352.53

$384.06

$418.24

$455.26

10″

$563.97

$614.42

$669.10

$728.31

Multi-Family Residential Water Rates for Volumetric Charges – Per Billing Unit

Tier

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

Tier 1

$2.76

$3.06

$3.41

$3.62

Tier 2

$3.34

$3.70

$4.12

$4.39

Tier 3

$4.75

$5.11

$5.53

$5.80

Tier 4

$7.26

$7.62

$8.04

$8.30

Tier 5

$11.31

$11.67

$12.09

$12.36

FEES & CHARGES: WASTEWATER RATES & SERVICE CHARGES

Monthly Service Charge: The fixed fee for providing wastewater service to your property, based on the size of your water meter. This fee recovers fixed costs, such as infrastructure repairs and maintenance.

Multi-Family Residential Rates for Monthly Water Service Charges – By Meter Size

Meter Size

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

5/8″

$33.70

$37.58

$41.90

$46.72

3/4″

$33.70

$37.58

$41.90

$46.72

1″

$33.70

$37.58

$41.90

$46.72

1.5″

$100.85

$112.44

$125.37

$139.79

2″

$158.41

$176.62

$196.93

$219.58

3″

$340.70

$379.88

$423.56

$472.27

4″

$580.52

$647.28

$721.72

$804.72

6″

$1,204.10

$1,342.57

$1,496.97

$1,669.12

8″

$1,731.73

$1930.87

$2152.92

$2,400.51

10″

$2,787.00

$3,107.51

$3,464.87

$3,863.33

Volumetric Charge: For multi-family residential customers, the fee is based on the number of people receiving service in your household.

Multi-Family Residential Rates for Per Person Wastewater Charges

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

$5.89 per person

$6.57 per person

$7.33 per person

$8.17 per person

For commercial customers, your water budget is based on a rolling average of the current month and the same month in the prior two years. Each month’s usage is weighted by the number of days in that bill to account for the potential difference in meter read dates for the different years. Water budgets for commercial customers shall be calculated such that a minimum budget of one billing unit shall be provided. For commercial customers with less than 3-years of data, the water budgets are calculated as follows: (a) for the first year, the customer’s budget is equal to water used; and (b) for the 2nd year, it is an average of current and the previous year’s usage in that month (e.g. February 2021 and February 2022) weighted by the number of days in each bill period.

Commercial Rates for Monthly Water Service Charges ($/Meter)

Meter Size

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

5/8″

$5.11

$5.56

$6.06

$6.60

3/4″

$5.11

$5.56

$6.06

$6.60

1″

$5.11

$5.56

$6.06

$6.60

1.5″

$17.03

$18.55

$20.20

$21.99

2″

$27.24

$29.68

$32.32

$35.18

3″

$59.60

$64.93

$70.71

$76.96

4″

$102.16

$111.30

$121.21

$131.93

6″

$212.84

$231.88

$252.51

$274.86

8″

$306.48

$333.90

$363.62

$395.80

10″

$493.78

$537.95

$585.83

$637.68

Commercial Water Rates for Volumetric Charges – Per Billing Unit

Tier

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

Tier 1

$3.34

$3.70

$4.12

$4.39

Tier 2

$4.75

$5.11

$5.53

$5.80

Tier 3

$7.26

$7.62

$8.04

$8.30

Tier 4

$11.31

$11.67

$12.09

$12.36

Commercial Wastewater Service Charges 

The rates for the District’s monthly wastewater service charges are structured to meet the District’s costs to operate and maintain its wastewater collection systems. MNWD’s rate structure consists of three customer classes: residential, multi-family, and commercial. Within the commercial customer class there are four subclasses of customers:

  • Commercial Class 1 – Typical users include: banks, car washes, churches, department and retail stores, laundromats, professional offices, schools, and colleges
  • Commercial Class 2 – Typical users include: beauty and barber shops, hospitals, convalescent facilities, repair shops, service stations, and veterinary hospitals
  • Commercial Class 3 – Typical users include: hotels with dining facilities, markets with garbage disposals, mortuaries, and fast-food restaurants
  • Commercial Class 4 – Typical users include: restaurants, auto-steam-cleaning facilities, and bakeries.
Commercial 1: Rates for Monthly Wastewater Service Charges – By Meter Size

Meter Size

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

5/8″

$35.72

$39.83

$44.41

$49.51

3/4″

$35.72

$39.83

$44.41

$49.51

1″

$35.72

$39.83

$44.41

$49.51

1.5″

$107.57

$119.94

$133.73

$149.11

2″

$169.16

$188.62

$210.31

$234.49

3″

$364.23

$406.12

$452.82

$504.90

4″

$620.87

$692.26

$771.88

$860.64

6″

$1,288.15

$1,436.29

$1,601.46

$1,785.63

8″

$1,852.75

$2065.82

$2303.39

$2,568.28

10″

$2,981.99

$3,324.93

$3,707.29

$4,133.63

Commercial 2: Rates for Monthly Wastewater Service Charges – By Meter Size

Meter Size

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

5/8″

$79.95

$89.15

$99.40

$110.83

3/4″

$79.95

$89.15

$99.40

$110.83

1″

$79.95

$89.15

$99.40

$110.83

1.5″

$255.01

$284.33

$317.03

$353.49

2″

$405.07

$451.66

$503.60

$561.51

3″

$880.33

$981.57

$1,094.45

$1,220.31

4″

$1,505.58

$1,678.72

$1,871.78

$,2087.03

6″

$3,131.32

$3491.42

$3,892.94

$4,340.62

8″

$4,506.90

$5,025.19

$5,603.09

$6,247.45

10″

$7,258.14

$8,092.82

$9,023.50

$10,061.20

Commercial 3: Rates for Monthly Wastewater Service Charges – By Meter Size

Meter Size

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

5/8″

$154.86

$172.67

$192.52

$214.66

3/4″

$154.86

$172.67

$192.52

$214.66

1″

$154.86

$172.67

$192.52

$214.66

1.5″

$504.66

$562.70

$627.41

$699.56

2″

$804.53

$897.05

$1,000.22

$1,115.24

3″

$1,754.23

$1,955.97

$2,180.91

$2,431.71

4″

$3,003.66

$3,349.08

$3,734.22

$4.163.65

6″

$6,252.33

$6,971.35

$7,773.06

$8,666.96

8″

$9,001.12

$10,036.25

$11,190.42

$12,477.32

10″

$14,498.85

$16,166.22

$18,025.34

$20,098.25

Commercial 4: Rates for Monthly Wastewater Service Charges – By Meter Size

Meter Size

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

5/8″

$171.68

$191.43

$213.44

$237.99

3/4″

$171.68

$191.43

$213.44

$237.99

1″

$171.68

$191.43

$213.44

$237.99

1.5″

$560.74

$625.22

$697.12

$777.29

2″

$894.26

$997.10

$1,111.76

$1,239.62

3″

$1,950.52

$2,174.83

$2,424.94

$2,703.81

4″

$3,340.14

$3,724.26

$4,152.55

$4,630.09

6″

$6,953.35

$7,752.99

$8,644.58

$9,638.71

8″

$10,010.58

$11,161.80

$12,445.41

$13,876.63

10″

$16,125.21

$17,979.61

$20,047.27

$22,352.70

Potable irrigation water budgets are calculated based on the amount of irrigated area per parcel, monthly evapotranspiration numbers, and a landscaping factor of 0.70, with the exception of public spaces which are calculated based on a landscaping factor of 1.0. Irrigation water usage within budget is billed at the Tier 1 rates noted in the table below.

Portable Irrigation Rates for Monthly Water Service Charges – By Meter Size

Meter Size

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

5/8″

$21.83

$23.78

$25.90

$28.19

3/4″

$21.83

$23.78

$25.90

$28.19

1″

$21.83

$23.78

$25.90

$28.19

1.5″

$72.76

$79.26

$86.32

$93.96

2″

$116.41

$126.83

$138.12

$150.34

3″

$254.68

$277.46

$302.16

$328.90

4″

$436.58

$475.63

$517.97

$563.81

6″

$909.55

$990.91

$1079.10

$1174.61

8″

$1309.74

$1426.90

$1553.90

$1691.42

10″

$2110.15

$2298.91

$2503.51

$2725.07

Portable Irrigation Rates for Volumetric Charges – Per Billing Unit

Tier

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

Tier 1

$3.34

$3.70

$4.12

$4.39

Tier 2

$4.75

$5.11

$5.53

$5.80

Tier 3

$7.26

$7.62

$8.04

$8.30

Tier 4

$11.31

$11.67

$12.09

$12.36

Recycled water budgets are calculated based on the amount of irrigated area per parcel, monthly evapotranspiration, and a landscaping factor of 0.80. All recycled water use within budget is billed at the Tier 1 rates noted in the tables below.

Recycled Irrigation Rates for Monthly Water Service Charges – By Meter Size

Meter Size

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

5/8″

$21.83

$23.88

$26.20

$28.88

3/4″

$21.83

$23.88

$26.20

$28.88

1″

$21.83

$23.88

$26.20

$28.88

1.5″

$72.76

$79.60

$87.32

$96.27

2″

$116.41

$127.36

$139.71

$154.03

3″

$254.68

$278.62

$305.65

$336.97

4″

$436.58

$477.62

$523.95

$577.65

6″

$909.55

$995.05

$1091.57

$1203.46

8″

$1309.74

$1432.86

$1571.85

$1732.96

10″

$2110.15

$2308.51

$2532.43

$2792.01

Recycled Water Rates for Volumetric Charges – Per Billing Unit

Tier

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

Tier 1

$1.96

$2.14

$2.35

$2.59

Tier 2

$4.23

$4.50

$4.79

$5.14

Tier 3

$6.69

$6.95

$7.24

$7.59

Tier 4

$10.79

$11.06

$11.35

$11.70

For private fire protection services, monthly charges are based on the size of the connection as shown in the table below.

Private Fire Protection Rates for Monthly Water Service Charges – By Connection Size

Meter Size

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

5/8″

$6.38

$6.95

$7.57

$8.24

3/4″

$6.38

$6.95

$7.57

$8.24

1″

$6.38

$6.95

$7.57

$8.24

1.5″

$21.26

$23.16

$25.22

$27.46

2″

$34.02

$37.06

$40.36

$43.93

2.5″

$54.21

$59.06

$64.32

$70.01

3″

$74.42

$81.08

$88.29

$96.11

4″

127.58

$138.99

$151.36

$164.75

6″

$265.78

$289.56

$315.33

$343.24

8″

$382.73

$416.96

$454.07

$494.26

10″

$616.62

$671.78

$731.56

$796.31

Commercial customers in need of temporary water supply during construction may contact the District’s Cross Connection Inspector Jesse Calvillo at (949) 607-9461 or at jcalvillo@mnwd.com.

Rates for Temporary Water Meters and Construction Water Service Fees

Fee Type

Effective January 1, 2026

Effective January 1, 2027

Effective January 1, 2028

Effective January 1, 2029

Temporary Water Meter Fee ($/Month)

$197.08

$214.72

$233.83

$254.52

Construction Water Service Fee ($/HCF) Portable Water

$3.34

$3.70

$4.12

$4.39

Construction Water Service Fee ($/HCF) Recycled Water

$2.96

$3.24

$3.55

$3.92