Network
249 miles gravity main, 6 miles force main, 17 lift stations
Asset register conformed from ArcGIS and joined to Cityworks maintenance history.
Source: Esri ArcGIS
Asset Network & Condition
Spatial inventory, age and material profile, and risk-ranked renewal candidates
Permit headroom6.95 / 12.50 MGD — 44.4% headroom
NPDES CA0038539Key insights — Apr 26
Derived from this page’s source dataCondition
42.5 miles at grade 4–5
Roughly 17% of the gravity network sits in poor or immediate-attention condition.
Coverage
58.2% CCTV-inspected in five years
Uninspected mileage is the largest source of unquantified risk in the condition model.
Risk gap
1 top-risk segment with no CIP project
Highest likelihood-times-consequence assets not yet tied to a funded project number.
Gravity main
249.0 mi
6,142 segments
Force main
6.0 mi
38 segments
Manholes / lift stations
6,318 / 17
point assets
Replacement value
$1008.6M
current-dollar estimate
Inspected last 5 yrs
58.2%
CCTV coverage
Service area schematic
stylized — not survey gradeThe District serves approximately 100,000 residents across San Pablo, Richmond, El Sobrante, Pinole and unincorporated Contra Costa County. Trunk alignments and station locations are illustrative.
Condition profile
miles by structural gradeGrade 1 — Excellent88.4 mi
36%
Grade 2 — Good71.2 mi
29%
Grade 3 — Fair46.9 mi
19%
Grade 4 — Poor28.1 mi
11%
Grade 5 — Immediate14.4 mi
6%
Asset inventory
| Class | Quantity | Avg age | Repl. value |
|---|---|---|---|
| Gravity Main | 249.0 mi | 54 yr | $742.0M |
| Force Main | 6.0 mi | 41 yr | $31.4M |
| Manhole | 6,318 ea | 52 yr | $63.2M |
| Lift Station | 17 ea | 38 yr | $48.9M |
| Lateral (public portion) | 58.4 mi | 56 yr | $121.0M |
| Air/Vacuum Valve | 84 ea | 27 yr | $2.1M |
Replacement value from the 2024 asset management plan basis.
Pipe age and material profile
miles by install decadeVitrified clay pipe installed between the 1940s and 1960s carries the largest share of the network and accounts for the majority of root-intrusion and structural defects observed in CCTV.
Risk matrix
likelihood × consequence of failureConsequence →
170
160
129
122
107
157
169
155
151
81
180
195
140
119
118
188
183
201
163
121
245
209
210
206
191
Likelihood of failure →
461 assets fall in the high-risk quadrant and drive the renewal program's prioritization.
Highest-risk segments
risk score = likelihood × consequence| Asset ID | Location | Diameter | Material | Installed | PACP grade | Risk score | In CIP |
|---|---|---|---|---|---|---|---|
| GM-4471 | Hilltop Dr @ Robert Miller | 15" | VCP | 1952 | 5 | 24 | CIP-24-108 |
| GM-4188 | Rumrill Blvd @ Market Ave | 12" | VCP | 1948 | 5 | 22 | CIP-25-114 |
| GM-3907 | Church Ln @ Road 20 | 10" | Concrete | 1961 | 4 | 20 | CIP-25-114 |
| FM-0006 | Parr Blvd force main | 18" | DIP | 1978 | 4 | 20 | CIP-26-121 |
| GM-4620 | Giaramita St @ Brookside | 8" | VCP | 1955 | 4 | 18 | — |
Segments without a CIP reference are renewal candidates not yet programmed.