Water treatment questions, answered.

Summerville CPW water meets all federal EPA drinking water standards, which is what legally safe means. However, EWG testing of Summerville CPW data identified 11 regulated and unregulated compounds above EWG health guidelines, including trihalomethanes at approximately 168x guideline, HAA9 at approximately 368x guideline, and PFUnA at approximately 1,183x EWG advisory. EWG guidelines are stricter than federal MCLs. Your water is federally legal to drink and simultaneously flags for EWG health guidelines.

• Summerville CPW Consumer Confidence Report
• EWG Tap Water Database -- Summerville CPW (SC1810003)

Yes. EWG testing of Summerville CPW data between 2014 and 2023 detected five PFAS compounds above EWG health advisories, including PFUnA at approximately 1,183 times the EWG advisory and PFDoA at approximately 75 times. Summerville CPW is investing approximately $43.5M as its share of a $96M regional PFAS removal project. The EPA PFAS National Primary Drinking Water Regulation finalized in April 2024 sets a 4 parts-per-trillion MCL for PFOA and PFOS with a 2029 compliance deadline.

• EWG Tap Water Database -- Summerville CPW
• EPA PFAS NPDWR announcement

Summerville CPW delivers water at approximately 5.5 to 7.2 grains per gallon, classified as moderately hard. For context: South Carolina statewide average is 8.1 grains per gallon and national average is 13. Charleston Water System, which serves peninsular Charleston and parts of Mount Pleasant, is approximately 3.4 grains per gallon (moderately soft). Mount Pleasant Waterworks runs a lime-softening plant and delivers approximately 29 ppm (about 1.7 gpg) post-treatment.

• Summerville CPW Consumer Confidence Report
• DROP water hardness in South Carolina cities

Charleston Water System delivers water at approximately 3.4 grains per gallon, or 58.4 ppm, classified as moderately soft. CWS serves peninsular Charleston, James Island, West Ashley, and portions of North Charleston. CWS uses chloramine as its disinfectant. For comparison, the neighboring Summerville CPW runs 5.5 to 7.2 grains per gallon, and national average hardness is about 13 grains per gallon.

• Charleston Water System Water Quality Reports

Summerville CPW uses chlorine as its primary disinfectant. Charleston Water System, Mount Pleasant Waterworks, and Dorchester County Water Authority use chloramine, which is chlorine combined with ammonia. Chloramine is more stable in distribution pipes but cannot be removed by the simple carbon filters that strip free chlorine. Chloramine removal requires catalytic carbon with longer contact time. This materially affects product selection in each utility footprint.

• Summerville CPW Water Quality Report
• EPA Chloramine in Drinking Water

No. Summerville CPW, which serves Nexton, has completed its lead service line inventory and identified zero lead service lines. Charleston Water System, by contrast, identified approximately 6,000 lead service lines concentrated in peninsular Charleston and the North Charleston Neck corridor. CWS is executing a $120M replacement program with a $32.4M federal grant and a 2037 EPA compliance deadline.

• Summerville CPW Consumer Confidence Report
• Charleston Water System lead service line program

On March 17-18, 2026 a contractor punctured the Santee Cooper main line at the Lake Moultrie Regional Water Plant. Summerville CPW, Goose Creek, and parts of Berkeley County were placed under a boil-water advisory affecting approximately 70,000 residents. The advisory was lifted 24 hours after repair completion on March 18. Charleston Water System customers and Naval Weapons Station residents were not affected. If your water was in the affected area, utility testing cleared it post-repair.

• Summerville CPW March 2026 incident release

A grain per gallon (gpg) is a unit of water hardness. It measures the amount of calcium and magnesium in your water. Soft is under 1 gpg; slightly hard is 1 to 3.5 gpg; moderately hard is 3.5 to 7 gpg; hard is 7 to 10.5 gpg; very hard is above 10.5. Summerville CPW runs 5.5 to 7.2 gpg (moderately hard). Charleston Water System runs 3.4 gpg (moderately soft). Mount Pleasant Waterworks runs about 1.7 gpg post lime softening.

• USGS hardness classifications

Goose Creek is served by the City of Goose Creek water utility sourced from Lake Moultrie via Santee Cooper. HomeWater.com reporting on the EWG SC0810004 data indicates elevated perchlorate, 1,3,5-trimethylbenzene, silver, and abnormally high hardness. Goose Creek was among the approximately 70,000 residents affected by the March 17-18 2026 Santee Cooper main-line boil-water advisory. The advisory was lifted after repair.

• HomeWater.com Goose Creek SC water quality
• EWG Tap Water Database -- Goose Creek

The most common cause is hardness switch. If you moved from a soft-water region like New York City, coastal Florida, or parts of California, you were running 1 to 2 grains per gallon. Summerville CPW is approximately 7.2 gpg and even CWS is 3.4 gpg. Harder water leaves soap residue on skin and hair that feels filmy and tight. Not a diagnosis -- a data point worth testing. A free water test confirms what your specific shower is running.

• USGS water hardness map

Usually it is hardness. Summerville CPW delivers water at approximately 5.5 to 7.2 grains per gallon (moderately hard). The calcium and magnesium leave soap and conditioner residue on hair that feels stiff or crunchy as it dries. It is not a hair product problem so much as a water problem. A free in-home water test tells you exactly what your shower is running.

• Summerville CPW Consumer Confidence Report

If your home is on Summerville CPW -- which includes most of Nexton, Cane Bay, Carnes Crossroads, Foxbank, and Summerville proper -- your water runs 5.5 to 7.2 grains per gallon (moderately hard). That is where soap performance, fixture scaling, and skin feel start to show visible effects. Whether a conditioner or softener is worth installing depends on your water heater age, appliance mix, shower feel, and bottled-water spending. A free in-home water test from Pristine covers the math.

• Summerville CPW Consumer Confidence Report

A whole-home Puronics water conditioning system from Pristine Water Networks costs $7,999 installed for most Summerville and Charleston Lowcountry homes. That is approximately $95 per month with approved financing on a standard term. Charleston-market Culligan dealer quotes in Q1 2026 ran $9,800 to $13,500 installed; Kinetico quotes ran $10,500 to $14,200. Culligan and Kinetico dealers quote only after a 60 to 90 minute in-home sales visit. Pristine publishes pricing before the visit.

• Pristine Water Networks pricing page
• Pristine Water Networks comparison page

A DIY unit from a box retailer can cost $1,000 to $3,000 for equipment alone, but a whole-home system requires a main-line plumbing cut-in that in South Carolina falls under SC Code 40-59-20(7) -- residential plumbing work over $500 requires a licensed Residential Plumber. Permit, installation, correct system sizing, and ongoing warranty coverage are why most Summerville homeowners use professional installation. Pristine publishes $7,999 installed end-to-end.

• SC Code 40-59-20(7) Residential Plumber license

A whole-home Puronics installation typically takes about four hours, performed by a SC-licensed partner plumber. Newer homes in Nexton, Cane Bay, Carnes Crossroads, and Foxbank usually have the main water shutoff in the garage, which keeps the install clean and fast. Older homes in Summerville proper can take longer if new lines need to be run. Your site-specific install scope is confirmed during the free water test.

• Pristine Water Networks services page

Every $7,999 install includes: the whole-home Puronics unit sized to your home, SC-licensed partner plumber installation (approximately four hours), a 6-panel on-site water test (hardness, chlorine or chloramine, TDS, pH, iron, aesthetic markers) with printed leave-behind results, written satisfaction terms, Puronics lifetime parts warranty on the conditioning media and control valve, and a one-year service window with annual check-up.

• Pristine Water Networks services page

Yes. Pristine Water Networks offers 12, 24, 36, and 60 month financing terms through a partner lender, subject to credit approval. No prepayment penalty. A $7,999 system works out to approximately $95 per month on a 12-year 9.9% APR program. Exact APR, total of payments, and any deferred-interest terms are disclosed in writing before signing.

• Pristine Water Networks financing section

Yes, if the installation cost exceeds $500. South Carolina Code 40-59-20(7) requires a Residential Plumber license for residential plumbing work over $500. A whole-home water conditioner install cuts into the main water supply line and qualifies. Pristine installs are performed under a SC Residential Plumber license; the license number is provided on the written quote and in the install paperwork.

• SC Code 40-59-20 Residential Plumber license

It depends on which Puronics product. The Puronics Pur-Alkaline 6-stage reverse-osmosis system is the point-of-use unit Pristine installs at the kitchen tap. The exact certification scope for the recommended model is provided in writing before install -- verify any listing at info.nsf.org. Puronics Hydronex iGen whole-home conditioners use silver-ion media and are WQA-tested, but are NOT currently NSF listed for contaminant reduction as of April 2026. Pristine will show the exact certification scope for any recommended model in writing before you decide.

• NSF International listings portal

It depends on what you value. Both brands have decades in market and install NSF-certified systems. The differentiators that actually affect outcomes for Charleston homeowners: warranty terms, installer licensing, pricing transparency, and whether the specific model has NSF certification for the contaminant claims that matter to you. Pristine is an authorized Puronics dealer and will show the certification scope in writing. The best comparison is getting quotes from both and reading the fine print.

• Pristine Water Networks comparison page

Kinetico's differentiator is a dual-tank non-electric design that can regenerate on demand. Puronics' differentiator is silver-ion media (NASA-licensed) and a lifetime parts warranty. Charleston-market Kinetico quotes run $10,500 to $14,200 installed; Pristine's Puronics install is published at $7,999. For households where non-electric operation is a dealbreaker, Kinetico is worth quoting. For households where pricing transparency and warranty depth matter more, a Puronics-through-Pristine quote is worth having in the comparison.

• Pristine Water Networks comparison page

A water softener uses ion exchange with salt to replace calcium and magnesium (the hardness minerals) with sodium. A water conditioner uses different media (silver-ion in the case of Puronics whole-home units) to change how hardness minerals interact with pipes and fixtures without fully removing them. Softeners produce genuinely soft water but add sodium; conditioners reduce scaling effects without adding sodium. Which is right depends on your household medical profile and whether you prefer soft-water feel or salt-free operation.

• WQA Water Treatment Fundamentals

Three local options serve Summerville: Pristine Water Networks (authorized Puronics dealer, $7,999 published pricing, owner-operator Jarred Guidelli), Wadford Water Works (family-owned Charleston metro since 2007), and Culligan Charleston (national franchise). The right fit depends on what you value: transparent pre-visit pricing points to Pristine; franchise brand depth points to Culligan; multi-decade local operation points to Wadford. We encourage quoting multiple options.

• Pristine Water Networks comparison page

Pristine Water Networks provides free 45-minute in-home water tests throughout Summerville, Nexton, Cane Bay, Carnes Crossroads, Foxbank, Mount Pleasant, West Ashley, Daniel Island, and the greater Charleston Lowcountry. A Puronics factory-trained technician arrives at your home, pulls a sample from your tap, and runs a 6-panel test on your kitchen counter. Book online at prstnwtr.com/book.

• Pristine Water Networks booking page

A Puronics factory-trained technician arrives at your home, sets up portable testing equipment on your kitchen counter, pulls a fresh tap sample, and runs a 6-panel test: hardness in grains per gallon, chlorine or chloramine, total dissolved solids, pH, iron, and aesthetic markers. You watch every reading come off the meter. You keep a printed leave-behind regardless of whether you buy anything. The visit takes about 45 minutes. Zero pressure to purchase.

• Pristine Water Networks what-to-expect page

Yes. The 45-minute in-home water test is free with no purchase obligation. You receive your printed results whether or not you purchase a system. If you do purchase, federal law (16 CFR Part 429) gives you three business days to cancel in writing. Pristine does not run a 90-minute sales presentation during the test -- we show you the data and leave.

• FTC 16 CFR Part 429 Cooling-Off Rule

About 30 minutes before arrival you receive a text with the technician's ETA and photo, plus the vehicle description. The technician wears a Pristine ID badge with the same face and name as the text. All work is performed by owner Jarred Guidelli or a Puronics factory-trained technician, under a South Carolina Residential Plumber license.

• Pristine Water Networks what-to-expect page

Pristine Water Networks, based in Summerville, is the authorized Puronics dealer for Nexton. Owner Jarred Guidelli personally runs every free water test and every install. Free 45-minute in-home water assessments are available by appointment. Nexton homes are served by Summerville CPW (5.5 to 7.2 grains per gallon, five PFAS compounds detected). Book at prstnwtr.com/book.

• Pristine Water Networks Nexton page

Pristine Water Networks serves Cane Bay Plantation as the authorized Puronics dealer. Owner Jarred Guidelli runs the free 45-minute water test and the install personally. Cane Bay Plantation is served by Summerville CPW with approximately 5.5 to 7.2 grains per gallon hardness. Published install price is $7,999 or approximately $95 per month with approved financing.

• Pristine Water Networks Cane Bay page

Mount Pleasant is served by Mount Pleasant Waterworks, which operates an 8.24 million gallon-per-day lime-softening treatment facility. Post-treatment hardness is approximately 29 ppm (roughly 1.7 grains per gallon). Chloramine is the disinfectant. Pristine Water Networks serves Mount Pleasant as part of the greater Charleston Lowcountry service area for whole-home Puronics installations and free in-home water testing.

• Mount Pleasant Waterworks Water Quality Reports

Goose Creek is served by the City of Goose Creek water utility sourced from Lake Moultrie via Santee Cooper. HomeWater.com reporting on the EWG SC0810004 data indicates elevated perchlorate, 1,3,5-trimethylbenzene, silver, and abnormally high hardness. Goose Creek was among the approximately 70,000 residents affected by the March 17-18 2026 Santee Cooper main-line boil-water advisory. The advisory was lifted after repair.

• HomeWater.com Goose Creek SC water quality
• EWG Tap Water Database -- Goose Creek