Cucamonga Valley Water District is a large public water system in EPA region 9 that provides tap water for the 91701, 91730, 91739, 91784 zip codes. It has 69 facilities where the water supply was tested for 85 chemical contaminants that impact tap water quality and human health.
The maximum reported level of HAA5 (five regulated haloacetic acids) was 14.5 µg/L. The maximum reported level of Manganese was 4.7 µg/L. The maximum reported level of quinoline was 0.033 µg/L. Some (1 of 20 or 5%) of the latest water samples showed levels of quinoline that were at or above unsafe concentration levels. There were 3 contamintants found in the Cucamonga Valley Water District water supply at levels that were above the minimum reporting level. 1 of the contaminants were above the reference level, which means they may pose a risk to human health.
Reservoir 8B (Deer Creek)
Ground Water (GW)EP #40 - Reservoir 8B TreatedEntry Point to the Distribution System (EP)
RESERVOIR 8BEntry Point to the Distribution System (EP)
Lloyd Michael WTP
Surface Water (SW)EP #18 - Lloyd Michael WTP Eff.Entry Point to the Distribution System (EP)
Reservoir 3A
Ground Water (GW)EP #47 - Reservoir 3A TreatedEntry Point to the Distribution System (EP)
Reservoir 1
Ground Water (GW)EP #45 - Reservoir 1 TreatedEntry Point to the Distribution System (EP)
Arthur Bridge WTP
Surface Water (SW)EP #44 - Arthur Bridge WTP Eff.Entry Point to the Distribution System (EP)
Reservoir 3
Ground Water (GW)EP #43 - Reservoir 3 TreatedEntry Point to the Distribution System (EP)
Reservoir 1B
Ground Water (GW)EP #918 - Reservoir 1B TreatedEntry Point to the Distribution System (EP)
Reservoir 1C
Ground Water (GW)EP#919 - Reservoir 1C TreatedEntry Point to the Distribution System (EP)
Distribution System
Multiple Sources (MX)LWMWTP EffluentDistribution System (DS)
Reservoir 3 EffluentDistribution System (DS)
10485 AlmondDistribution System (DS)
5072 CastleDistribution System (DS)
8525 Red Hill CC Rd.Distribution System (DS)
5002 AggazzottiDistribution System (DS)
14295 E. Constitution WayDistribution System (DS)
7410 Arbor LaneDistribution System (DS)
Royer Nesbit WTP
Surface Water (SW)EP #21: Royer Nesbit WTP Eff.Entry Point to the Distribution System (EP)
Distribution System - SW
Surface Water (SW)10643 Champagne Rd.Maximum Residence Time (MR)
East Heritage SchoolMaximum Residence Time (MR)
8849 Hillside Rd.Maximum Residence Time (MR)
Distribution System - MX
Multiple Sources (MX)10161 Victoria St.Maximum Residence Time (MR)
Distribution System - GW
Ground Water (GW)4703 LondonMaximum Residence Time (MR)
7547 Alta Cuesta Dr.Maximum Residence Time (MR)
8250 Milliken Ave.Maximum Residence Time (MR)
500 N. Barrington Ave.Maximum Residence Time (MR)
EP- #046 RESERVOIR 2A - TREATED
Ground Water (GW)RESERVOIR 2AEntry Point to the Distribution System (EP)
EP # 051 WELL 41 GROUNDWATER
Ground Water (GW)WELL 41Entry Point to the Distribution System (EP)
EP #050 WELL 42 GROUNDWATER
Ground Water (GW)WELL 42Entry Point to the Distribution System (EP)
8B D/DBP Max. Residence Time
Ground Water (GW)4703 LondonMaximum Residence Time (MR)
RN D/DBP Max. Residence Time
Surface Water (SW)10643 Champagne Rd.Maximum Residence Time (MR)
LM D/DBP Max. Residence Time
Surface Water (SW)East Heritage SchoolMaximum Residence Time (MR)
3A D/DBP Max. Residence Time
Ground Water (GW)7547 Alta Cuesta Dr.Maximum Residence Time (MR)
2A D/DBP Max. Residence Time
Ground Water (GW)9116 San Bernardino Rd.Maximum Residence Time (MR)
1 D/DBP Max. Residence Time
Ground Water (GW)8250 Milliken Ave.Maximum Residence Time (MR)
AHB D/DBP Max. Residence Time
Surface Water (SW)8849 Hillside Rd.Maximum Residence Time (MR)
3 D/DBP Max. Residence Time
Multiple Sources (MX)10161 Victoria St.Maximum Residence Time (MR)
1B D/DBP Max. Residence Time
Ground Water (GW)500 N. Barrington Ave.Maximum Residence Time (MR)
BEE TUNNEL
Surface Water (SW)BEE TUNNEL 01N/06W-17G01SR (SR)
WELL 01
Ground Water (GW)CUCAMONGA 01 01S/07W-14E01SR (SR)
WELL 03
Ground Water (GW)CUCAMONGA 03 01S/07W-14L01SR (SR)
WELL 04
Ground Water (GW)CUCAMONGA 04 01S/07W-14D01SR (SR)
WELL 08
Ground Water (GW)CUCAMONGA 08 01S/07W-04B02SR (SR)
WELL 10
Ground Water (GW)CUCAMONGA 10 01S/07W-04B01SR (SR)
WELL 12
Ground Water (GW)CUCAMONGA 12 01S/07W-04B03SR (SR)
WELL 13
Ground Water (GW)CUCAMONGA 13 01N/07W-27H03SR (SR)
WELL 15
Ground Water (GW)CUCAMONGA 15 01N/07W-27Q01SR (SR)
WELL 16
Ground Water (GW)CUCAMONGA 16 01N/07W-28N02SR (SR)
AHB WTP - RAW
Surface Water (SW)CUCAMONGA CANYON 01N/07W-17Q01SR (SR)
DAY CANYON
Surface Water (SW)DAY CANYON 036/018-006SR (SR)
RESERVOIR 8B INFLUENT
Ground Water (GW)RESERVOIR 8B RAW - 036/018-007SR (SR)
EAST CANYON
Surface Water (SW)EAST CANYON 036/018-008SR (SR)
HERMOSA TUNNEL
Ground Water (GW)HERMOSA TUNNEL 01N/07W-12N01SR (SR)
LLOYD W. MICHAEL WTP - RAW
Surface Water (SW)LLOYD W. MICHAEL WTP - 036/018-009SR (SR)
LLOYD W. MICHAEL WTP - TREATED
Surface Water (SW)LLOYD W. MICHAEL WTP - 036/018-010Entry Point to the Distribution System (EP)
ROYER NESBIT WTP - RAW
Surface Water (SW)ROYER NESBITT WTP - 036/018-011SR (SR)
ROYER NESBIT WTP - TREATED
Surface Water (SW)ROYER NESBITT WTP - 036/018-012Entry Point to the Distribution System (EP)
SMITH TUNNEL
Surface Water (SW)SMITH TUNNEL 01N/06W-17D01SR (SR)
THAYER TUNNEL
Ground Water (GW)THAYER TUNNEL 01N/07W-11G01SR (SR)
A TUNNEL
Ground Water (GW)TUNNEL %A% 01N/07W-02F01SR (SR)
WELL 05
Ground Water (GW)WELL 05 01S/07W-14G01SR (SR)
WELL 17
Ground Water (GW)WELL 17 01N/07W-27P02SR (SR)
WELL 19
Ground Water (GW)WELL 19 01N/07W-33D01SR (SR)
WELL 20
Ground Water (GW)WELL 20 01N/07W-33L01SR (SR)
WELL 21
Ground Water (GW)WELL 21 01N/07W-33E01SR (SR)
WELL 22
Ground Water (GW)WELL 22 01S/07W-04C01SR (SR)
WELL 23
Ground Water (GW)WELL 23 01N/07W-34A07SR (SR)
WELL 24
Ground Water (GW)WELL 24 01N/07W-33D03SR (SR)
WELL 26
Ground Water (GW)WELL 26 036/018-002SR (SR)
WELL 30
Ground Water (GW)WELL 30 036/018-005SR (SR)
WELL 31
Ground Water (GW)WELL 31 036/018-001SR (SR)
WELL 33
Ground Water (GW)WELL 33 036/018-004SR (SR)
RESERVOIR 8B EFFLUENT
Surface Water (SW)RESERVOIR 8B TREATE 3610018-040Entry Point to the Distribution System (EP)
WELL 34
Ground Water (GW)WELL 34 3610018-041SR (SR)
WELL 38
Ground Water (GW)WELL 38SR (SR)
RESERVOIR 3
Surface Water (SW)RESERVOIR 3Entry Point to the Distribution System (EP)
AHB WTP - EFFLUENT
Surface Water (SW)AHB WTP - EFFLUENTEntry Point to the Distribution System (EP)
RESERVOIR 1
Surface Water (SW)RESERVOIR 1Entry Point to the Distribution System (EP)
RESERVOIR 2A
Surface Water (SW)RESERVOIR 2AEntry Point to the Distribution System (EP)
RESERVOIR 3A
Surface Water (SW)RESERVOIR 3AEntry Point to the Distribution System (EP)
DAY/ETIWANDA CANYON SW SOURCES
Surface Water (SW)DAY/ETIWANDA CANYON SW SOURCESSR (SR)
CB-7 MWD - RAW
Surface Water (SW)CB-7 MWD - RAWSR (SR)
The latest water samples were taken on March 13th, 2024.