01The verdict: is Valley Springs water safe?
Valley Springs's drinking water has significant quality concerns based on EPA testing data. With a grade of A (90.3/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 4 water systems serve approximately 2,725 residents using groundwater (wells).
4 unresolved violations on record
EPA records show open compliance items for this system. Most are administrative, but unresolved items are worth watching.
See what was cited ↓Lead is well under the limit
90th-percentile lead is 3.9 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.
See the trend ↓A flood-prone service area
6 federal disaster declarations on record. After severe weather, watch for boil-water advisories.
See the risk factors ↓Valley Springs's drinking water received a grade of A (90.3 out of 100), indicating excellent water quality. The city's 4 water systems serve approximately 2,725 residents using groundwater.
Lead levels were measured at 3.9 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program. The system has 28 violations on record, including 2 health-based violations. 4 remain unresolved.
Valley Springs ranks #129 out of 690 cities in California for water quality, placing it above average in the state. Valley Springs relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff. As a small community water system, Valley Springs may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
02What's in Valley Springs's water
Every contaminant flagged in Valley Springs, on one shared scale: distance to its own legal limit. The red line is the limit — anything past it is out of compliance, and the closer a bar gets, the less headroom the system has.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 3.9 | 15 | ppb | Inorganic | Safe |
Cities ranked by 90th-percentile lead PF PFAS in California
Cities ranked by compounds detected Cu Copper in California
Cities ranked by 90th-percentile copper
03Valley Springs's ten-year track record
Each box is one year. A green check means no EPA violations; a numbered badge counts that year's violations — red if any were health-based, amber if they were monitoring or paperwork issues. The system has 28 violations on record, including 2 health-based violations. 4 remain unresolved.
All ten of the last ten years were clean — no EPA violations recorded for Valley Springs.
▼ Down 0 ppb since 1993. Latest reading: 0 ppb (2025) — 0% of the action level. Sampled at higher-risk homes (90th percentile).
04Where Valley Springs's water comes from
Valley Springs's drinking water is drawn from underground aquifers through wells.
Groundwater
Underground aquifers reached by wells — naturally filtered, but can carry minerals like arsenic and nitrate.
Local treatment
Groundwater generally needs less treatment — typically disinfection and, where needed, mineral removal.
4 systems
4 water systems, operated under local government ownership.
2,725 people
Residents served across Valley Springs's service area.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals. Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds. The system is operated by local government ownership and serves approximately 2,725 people through 4 water systems.
| System name | PWSID | Population | Source |
|---|---|---|---|
| CAMANCHE NORTH SHORE INC. | CA0310008 | 922 | Groundwater |
| VALLEY SPRINGS PUD | CA0510010 | 900 | Groundwater |
| CAMANCHE SOUTH SHORE-EBMUD | CA0510012 | 828 | Surface Water |
| COUNTRY MANOR MHP | CA3900844 | 75 | Groundwater |
05Pressure on Valley Springs's watershed
Outside forces that shape what reaches the treatment plant. None of these is a verdict on the tap by itself — but each adds pressure worth knowing about.
Flood & storm history
6 federal disaster declarations on record for Calaveras County. Flooding and severe storms can overwhelm treatment plants, cause sewage overflows, and push runoff into supplies.
06How Valley Springs compares
Scores for nearby California cities on one line, with the average marked.
dashed line = California average (57/100)
Valley Springs scores 90.3/100 — above the California average of 57/100. It outscores 9 of 10 nearby cities. Full California rankings →
42.8 / 100FSan Jose, CA
28 / 100BOakland, CA
77.9 / 100FSan Diego, CA
39.7 / 100FSacramento, CA
31.2 / 100ABurlingame, CA
89.2 / 100
Compare all cities in the county — grades, violations, and contaminant data side by side.→
07What to do at home
Steps matched to what testing actually found in Valley Springs's water — not generic advice.
A basic carbon filter still helps
Valley Springs's water meets federal standards, but a simple carbon filter improves taste and adds a margin of safety against short-term issues.
Compare tested filters →Flush taps & check your service line
Lead leaches from pipes as water sits. Run cold water 30 seconds before drinking (especially mornings), and ask the utility whether your address still has a lead service line.
Lead risks explained →Watch for Valley Springs alerts
This area has a history of flood declarations — after severe weather, watch for boil-water advisories from the utility, and check the live alerts on this page.
All water alerts →Frequently asked questions
Is Valley Springs, CA tap water safe to drink?
Valley Springs's water quality earned a grade of A (90.3/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #129 out of 690 cities tested in California.
What contaminants are in Valley Springs's water?
Lead was measured at 3.9 ppb (90th percentile). 28 violations are on record.
How is Valley Springs's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Valley Springs?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Valley Springs's water come from?
Valley Springs's water is sourced from Groundwater. The city has 4 water systems serving approximately 2,725 residents.
What health violations has Valley Springs's water system had?
Valley Springs has 2 health-based violations on record. The most recent violation was recorded in July 2016. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 4 violations remain unresolved.
Is Valley Springs's groundwater at risk of contamination?
Valley Springs uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 28 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Valley Springs's water compare to other cities?
Valley Springs ranks #129 out of 690 cities in California (better than 81% of state cities) and #2286 out of 15382 cities nationally (85th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.