Pool Chemical Prices: A Producer Price Index for Chlorine, Trichlor Inputs and Acid, 2019 to 2026

How the PC&S Pool Chemical Price Index is built

No federal agency publishes a price index for pool chlorine. This index averages four Bureau of Labor Statistics producer price series that cover chlorine feedstock, hydrochloric acid and the two industries that make pool sanitizers, each rebased so that its 2019 average equals 100.

Formula: for each month, index = (S1 + S2 + S3 + S4) / 4, where each S is a BLS series divided by its own January to December 2019 average and multiplied by 100. Equal weights are used because BLS publishes no weights for pool products inside these series. The latest month is August 2026, published by BLS on September 10, 2026; August 2026 PPI values are preliminary and can be revised for four months (BLS).

• S1, Chlorine, sodium hydroxide and other alkalies (WPU06130302, base June 2005 = 100): chlorine gas and caustic soda are two of the three raw materials for trichlor and dichlor, with urea the third (USITC, BLS).
• S2, Other basic inorganic chemical manufacturing (PCU325180325180, base December 2010 = 100): the Census NAICS index places calcium hypochlorite, sodium hypochlorite, hydrochloric acid and chlorine manufacturing in NAICS 325180 (Census Bureau).
• S3, Inorganic acids excluding nitric, sulfuric and phosphoric (PCU3251803251803, base December 1982 = 100): the closest BLS product series to hydrochloric (muriatic) acid used to lower pool pH (BLS).
• S4, Other miscellaneous chemical product manufacturing (PCU325998325998, base June 1985 = 100): the NAICS index places swimming pool chemical preparations manufacturing in NAICS 325998 (Census Bureau, BLS).

Pool chemical prices since 2019: index results through August 2026

The index dipped below 2019 levels in 2020 and 2021, jumped in 2022, peaked at 142.1 in January 2023, then averaged 119.2 in 2024, 120.9 in 2025 and 123.6 in January to August 2026. Pool chemical producer prices have risen less than consumer prices since 2019.

The PC&S Pool Chemical Price Index for the United States was 124.1 in August 2026, 24.1% above its 2019 average (BLS). The index peaked at 142.1 in January 2023. The August 2026 value is 12.7% below that peak. The index rose 1.6% from August 2025 (122.1) to August 2026.

Adjusted for consumer inflation with CPI-U, the index was 94.7 in August 2026 in 2019 dollars, below its 2019 level (BLS). The real index peaked at 121.5 in January 2023 and is 22.0% below that peak.

Between 2019 and August 2026, CPI-U rose to 131.0 and PPI final demand rose to 133.3 on the same 2019 = 100 basis (BLS). The pool chemical index ended 6.9 points below CPI-U and 9.2 points below PPI final demand. The CPI for household cleaning products stood at 128.5 (BLS).

Chlorine, caustic soda and acid: what moved the index

The feedstock series drove both the 2022 rise and the later decline. Chlorine and caustic soda prices peaked in January 2023 and have since given back most of their gains, while the two pool chemical industry series kept rising slowly.

The chlorine, sodium hydroxide and other alkalies PPI peaked at 195.3 in January 2023 (2019 = 100) and was 136.2 in August 2026, a 30.2% decline (BLS). The caustic soda PPI fell 39.4% from its January 2023 peak of 187.8 to 113.8 (BLS).

The other basic inorganic chemicals PPI, which covers hypochlorite and hydrochloric acid makers, was 144.7 in August 2026, 7.2% below its February 2023 peak (BLS). The hydrochloric acid proxy series was 91.4, 8.6% below its 2019 average (BLS). The miscellaneous chemical products PPI, which includes pool chemical preparations, reached 125.3 in June 2026 and was 124.2 in August 2026 (BLS).

Urea, the third trichlor input, sits inside a broader BLS series for ammonia, nitric acid, ammonium compounds and urea; that series peaked at 266.5 in April 2022 and was 176.2 in August 2026 (BLS). In its 2022 review, USITC reported that urea prices rose almost three-fold from January 2016 to March 2022, and industry petitioners estimated raw materials at about 70 percent of the cost to produce chlorinated isocyanurates (USITC).

The 2020 to 2022 chlorine tablet shortage: Bio-Lab, storms and imports

The trichlor shortage was a product-specific supply shock. Broad producer price series barely registered it in 2021, but import volumes and import unit values for chlorinated isocyanurates show it clearly.

On August 27, 2020, Category 4 Hurricane Laura damaged buildings at the Bio-Lab plant in Westlake, Louisiana that stored a trichloroisocyanuric acid (TCCA) formulation; rainwater started a decomposition, fire and chlorine release that destroyed a production building (CSB). Interstate 10 was closed for over 28 hours. About $250 million was invested to rebuild, and CSB reports production resumed around March 2023 (CSB; CSB investigation page).

Other supply hits followed. A February 2021 freeze on the U.S. Gulf Coast reduced chlorine production, and on September 1, 2021 OxyChem declared force majeure on water treatment chemicals from Luling, Louisiana and Sauget, Illinois after Hurricane Ida (USITC). In USITC’s 2022 questionnaires, all 7 responding U.S. producers, 9 of 10 importers and 13 of 19 purchasers reported supply constraints, mainly in 2020 to 2022 (USITC).

The PC&S index averaged 96.2 in 2021, below 2019, because the acid proxy series remained well below its 2019 level and chlorine and alkali prices had only started to rise. Import data tell a different story: the average unit value of US chlorinated isocyanurate imports reached an index of 118.4 in 2021 and 169.9 in 2022 (2019 = 100), and import volume in 2022 was 7.3 times the 2019 level (USITC).

Antidumping and countervailing duties on chlorinated isocyanurates

Chlorinated isocyanurates from China face antidumping and countervailing duties, and those from Spain face antidumping duties. There is no order on Japan, which became the largest import source by 2024.

Commerce issued antidumping orders on chlorinated isocyanurates from China and Spain on June 24, 2005, with a China-wide rate of 285.63% and a Spanish all-others rate of 24.83% (70 FR 36561, 70 FR 36562). A countervailing duty order on China followed on November 13, 2014 with an all-others rate of 10.81% (79 FR 67424). In the same 2014 case, USITC found no injury from imports from Japan, so no order was issued on Japan (79 FR 66404).

Both antidumping orders were continued on February 22, 2023 (88 FR 10871). The China countervailing duty order was continued effective November 21, 2025 after a second sunset review in which Commerce found subsidy rates of 14.11% to 32.58% likely to prevail, with 17.08% for all others (90 FR 36423, 90 FR 54303).

The latest final reviews set antidumping margins of 39.87% for Heze Huayi and 30.24% for Juancheng Kangtai for June 2023 to May 2024 (91 FR 11954). Preliminary results published September 16, 2026 for June 2024 to May 2025 are 90.65% and 72.63% (91 FR 58631). The latest final countervailing rates, for 2022, are 4.55% and 3.61%, and the preliminary 2023 rate for Heze Huayi is 18.71% (90 FR 44031, 91 FR 27027). For Spain, Ercros received 0.00% in the 2023 to 2024 final review and Ercros and Hernani received 0.00% in the 2024 to 2025 preliminary review (91 FR 33697, 91 FR 56623).

USITC’s November 2025 report also listed additional tariffs on Chinese chlorinated isocyanurates: Section 301 at 7.5%, IEEPA (fentanyl) at 20.0% and IEEPA (reciprocal) at 10.0%, a total of 37.5% at the time of writing (USITC).

What Pool Corp and Leslie's filings say about chemical prices

Pool Corp and Leslie’s describe the same arc in their SEC filings: price inflation well above normal in 2021 and 2022, deflation in trichlor and chemical sanitizers in 2023, and a return to low single-digit inflation from 2024.

Pool Corp estimated industry price inflation at 1% to 2% a year over the decade to 2020 and wrote that it has generally passed through chlorine price increases to customers (Pool Corp 10-K, fiscal 2020). Its estimate of inflationary product cost increases was about 7% to 8% in 2021, about 10% in 2022, 3% to 4% in 2023 and 1% to 2% in 2024 (Pool Corp 10-K, fiscal 2023, Pool Corp 10-K, fiscal 2024). In 2025 the figure was 2% to 3%, including a 1% impact from U.S. tariffs, and in the first six months of 2026 inflation added about 3% to sales (Pool Corp 10-K, fiscal 2025, Pool Corp 10-Q, quarter ended June 30, 2026).

In the third quarter of 2023 Pool Corp reported price deflation on trichlor (Pool Corp 10-Q, quarter ended September 30, 2023). Leslie’s cited a decrease in retail chemical pricing in June 2023 as a driver of lower fiscal 2023 gross margin (Leslie’s 10-K, fiscal 2023). Leslie’s describes the prices of granular chlorine compounds as “a function of, among other things, manufacturing capacity and demand” (Leslie’s 10-K, fiscal 2025).

Pool equipment prices: pumps, heaters and above-ground pools

Unlike chemicals, equipment producer prices have not come down. The PC&S equipment proxy is at its highest level since 2019.

The PC&S pool equipment proxy, the average of three BLS industry and product series rebased to 2019 = 100, was 142.5 in August 2026, its highest value since 2019 (BLS). The pumps series was 146.2, heating equipment except warm air furnaces (the NAICS industry that includes pool heaters) was 159.5, and sporting and athletic goods (which includes above-ground pools) was 121.9 (BLS, BLS, Census Bureau).

Operating costs for that equipment are covered in PC&S research on the cost to run a pool pump and the cost to heat a pool. Chemical handling injuries are covered in pool injury statistics.

Index results

1. The PC&S Pool Chemical Price Index for the United States was 124.1 in August 2026 (2019 = 100), up 24.1% from the 2019 average (BLS).
2. The index peaked at 142.1 in January 2023 and was 12.7% lower in August 2026 (BLS).
3. In 2019 dollars, the index was 94.7 in August 2026, 22.0% below its January 2023 real peak of 121.5 (BLS).
4. US CPI-U was 31.0% above its 2019 average in August 2026 and PPI final demand 33.3% above, both higher than the pool chemical index (BLS).
5. The US chlorine, sodium hydroxide and other alkalies PPI fell 30.2% from its January 2023 peak to August 2026 (BLS).
6. The US caustic soda PPI fell 39.4% from January 2023 to August 2026 (BLS).
7. The PC&S index averaged 96.2 in 2021, below 2019, even as the US trichlor shortage unfolded (BLS).
8. The average unit value of US chlorinated isocyanurate imports rose from $1.03 per pound in 2019 to $1.91 in 2023 (up 85.4%) and fell to $1.72 in 2024 (USITC).
9. US imports of chlorinated isocyanurates reached 151.6 million pounds in 2022, of which China supplied 64.0% (USITC).
10. In 2024 US imports were 53.2 million pounds, with Japan (26.7 million) and Spain (23.2 million) supplying 93.8% (USITC).
11. Swimming pool and spa uses account for 85 to 90 percent of the US chlorinated isocyanurates market, according to USITC in 2025 (USITC).
12. Commerce’s latest final antidumping margins on Chinese chlorinated isocyanurates (June 2023 to May 2024) are 39.87% and 30.24%, and the China-wide rate is 285.63% (91 FR 11954).
13. The China countervailing duty order on chlorinated isocyanurates was continued effective November 21, 2025 (90 FR 54303).
14. Pool Corp estimated US product cost inflation of about 10% in 2022, 1% to 2% in 2024 and 2% to 3% in 2025 (Pool Corp 10-K, fiscal 2023, Pool Corp 10-K, fiscal 2025).
15. The PC&S pool equipment proxy was 142.5 in August 2026 (2019 = 100), its highest level since 2019 (BLS).

Scores, ranks and sensitivity

Download the calculation sheet (CSV)

Takeaways

• The PC&S Pool Chemical Price Index was 124.1 in August 2026 (2019 = 100), 24.1% above the 2019 average, based on four BLS producer price series for the United States (BLS, BLS).
• The index peaked at 142.1 in January 2023 and has fallen 12.7% since, while it rose 1.6% from August 2025 to August 2026 (BLS).
• Adjusted by CPI-U, the index was 94.7 in August 2026, below its 2019 level and 22.0% under its real January 2023 peak of 121.5 (BLS).
• From 2019 to August 2026, US consumer prices (CPI-U) rose 31.0% and PPI final demand rose 33.3%, more than the pool chemical index’s 24.1% (BLS).
• The average unit value of US chlorinated isocyanurate imports rose 85.4% from $1.03 per pound in 2019 to $1.91 in 2023, then fell 9.9% to $1.72 in 2024 (USITC).
• China supplied 64.0% of US chlorinated isocyanurate import volume in 2022 but only 20 thousand pounds in 2024, when Japan and Spain supplied 93.8% (USITC).
• Chinese exporters of trichlor and dichlor without a separate rate face a 285.63% China-wide antidumping rate, and in September 2026 Commerce preliminarily set 90.65% for Heze Huayi for 2024 to 2025 (Federal Register).

Questions this index answers

Data vintage

• 2026-09-16Commerce published preliminary 2024 to 2025 antidumping margins on Chinese chlorinated isocyanurates: 90.65% for Heze Huayi and 72.63% for Juancheng Kangtai (91 FR 58631).
• 2026-09-10BLS released August 2026 PPI data; the PC&S Pool Chemical Price Index was 124.1, up 1.6% from August 2025 (BLS).
• 2026-09-03Commerce preliminarily found 0.00% margins for Spanish producers Hernani and Ercros for 2024 to 2025 (91 FR 56623).
• 2026-07-29Pool Corp’s second-quarter 10-Q reported a benefit of about 3% from inflationary product cost increases in the first six months of 2026 (Pool Corp 10-Q, quarter ended June 30, 2026).
• 2026-07-21CSB released its final report on the September 29, 2024 Bio-Lab warehouse fire in Conyers, Georgia (CSB).
• 2025-11-21The countervailing duty order on Chinese chlorinated isocyanurates was continued after its second sunset review (90 FR 54303).

FAQ

Source grading

Tier 1: primary and government sources (36)

• U.S. Bureau of Labor Statistics: PPI: Chlorine, sodium hydroxide, and other alkalies (WPU06130302)
• U.S. Bureau of Labor Statistics: PPI: Other basic inorganic chemical manufacturing (PCU325180325180)
• U.S. Bureau of Labor Statistics: PPI: Inorganic acids, excluding nitric, sulfuric and phosphoric (PCU3251803251803)
• U.S. Bureau of Labor Statistics: PPI: Other miscellaneous chemical product manufacturing (PCU325998325998)
• U.S. Bureau of Labor Statistics: PPI: Final demand (WPUFD4)
• U.S. Bureau of Labor Statistics: CPI-U: All items, U.S. city average (CUUR0000SA0)
• U.S. Bureau of Labor Statistics: Schedule of Releases for the Producer Price Index
• U.S. Census Bureau: 2022 NAICS Index File
• U.S. International Trade Commission: Chlorinated Isocyanurates from China, Inv. 701-TA-501 (Second Review), Pub. 5677, November 2025
• U.S. International Trade Commission: Chlorinated Isocyanurates from China and Spain, Inv. 731-TA-1082-1083 (Third Review), Pub. 5391, December 2022
• U.S. Chemical Safety and Hazard Investigation Board: Bio-Lab Lake Charles Chemical Fire and Release (investigation page)
• U.S. Chemical Safety and Hazard Investigation Board: Chemical Reaction, Decomposition, and Toxic Gas Release at Bio-Lab, Inc. (final report, April 24, 2023)
• U.S. Chemical Safety and Hazard Investigation Board: CSB Releases Bio-Lab Conyers Final Investigation Report (July 21, 2026)
• U.S. Department of Commerce, International Trade Administration: Notice of Antidumping Duty Order: Chlorinated Isocyanurates from the People's Republic of China, 70 FR 36561
• U.S. Department of Commerce, International Trade Administration: Chlorinated Isocyanurates from Spain: Notice of Antidumping Duty Order, 70 FR 36562
• U.S. Department of Commerce, International Trade Administration: Chlorinated Isocyanurates From the People's Republic of China: Countervailing Duty Order, 79 FR 67424
• U.S. International Trade Commission: Chlorinated Isocyanurates From China and Japan: Determinations, 79 FR 66404
• U.S. Department of Commerce, International Trade Administration: Continuation of Antidumping Duty Orders (China and Spain), 88 FR 10871
• U.S. Department of Commerce, International Trade Administration: Final Results of the Expedited Second Sunset Review of the CVD Order, 90 FR 36423
• U.S. Department of Commerce, International Trade Administration: Continuation of Countervailing Duty Order, 90 FR 54303
• U.S. Department of Commerce, International Trade Administration: China AD Administrative Review, Final Results 2023-2024, 91 FR 11954
• U.S. Department of Commerce, International Trade Administration: China AD Administrative Review, Preliminary Results 2024-2025, 91 FR 58631
• U.S. Department of Commerce, International Trade Administration: Spain AD Administrative Review, Final Results 2023-2024, 91 FR 33697
• U.S. Department of Commerce, International Trade Administration: Spain AD Administrative Review, Preliminary Results 2024-2025, 91 FR 56623
• U.S. Department of Commerce, International Trade Administration: China CVD Administrative Review, Final Results 2022, 90 FR 44031
• U.S. Department of Commerce, International Trade Administration: China CVD Administrative Review, Preliminary Results 2023, 91 FR 27027
• U.S. Bureau of Labor Statistics: PPI: Sodium hydroxide (caustic soda) (PCU3251803251804)
• U.S. Bureau of Labor Statistics: PPI: Pumps and pumping equipment (PCU3339143339141)
• U.S. Bureau of Labor Statistics: PPI: Heating equipment, except warm air furnaces (PCU333414333414)
• U.S. Bureau of Labor Statistics: PPI: Sporting and athletic goods manufacturing (PCU339920339920)
• U.S. Bureau of Labor Statistics: PPI: Inorganic acids, including hydrochloric, sulfuric acid and other (WPU0613020T)
• U.S. Bureau of Labor Statistics: PPI: Water treating compounds (PCU325998325998A)
• U.S. Bureau of Labor Statistics: PPI: Synthetic ammonia, nitric acid, ammonium compounds, and urea (WPU0652013A)
• U.S. Bureau of Labor Statistics: CPI: Household cleaning products (CUUR0000SEHN01)
• U.S. Department of Commerce, International Trade Administration: China AD Administrative Review 2023-2024, Correction, 91 FR 39601
• U.S. Bureau of Labor Statistics: Schedule of Releases for the Consumer Price Index

Tier 2: trade bodies, public companies, market research (13)

• POOL CORP (SEC EDGAR): POOL CORP Form 10-K for fiscal 2020
• POOL CORP (SEC EDGAR): POOL CORP Form 10-K for fiscal 2021
• POOL CORP (SEC EDGAR): POOL CORP Form 10-K for fiscal 2022
• POOL CORP (SEC EDGAR): POOL CORP Form 10-Q for the quarter ended September 30, 2023
• POOL CORP (SEC EDGAR): POOL CORP Form 10-K for fiscal 2023
• POOL CORP (SEC EDGAR): POOL CORP Form 10-K for fiscal 2024
• POOL CORP (SEC EDGAR): POOL CORP Form 10-K for fiscal 2025
• POOL CORP (SEC EDGAR): POOL CORP Form 10-Q for the quarter ended June 30, 2026
• Leslie's, Inc. (SEC EDGAR): Leslie's, Inc. Form 10-K for fiscal 2021
• Leslie's, Inc. (SEC EDGAR): Leslie's, Inc. Form 10-K for fiscal 2022
• Leslie's, Inc. (SEC EDGAR): Leslie's, Inc. Form 10-K for fiscal 2023
• Leslie's, Inc. (SEC EDGAR): Leslie's, Inc. Form 10-K for fiscal 2024
• Leslie's, Inc. (SEC EDGAR): Leslie's, Inc. Form 10-K for fiscal 2025

Data sources

1. U.S. Bureau of Labor Statistics. PPI: Chlorine, sodium hydroxide, and other alkalies (WPU06130302). Accessed 2026-10-05.
2. U.S. Bureau of Labor Statistics. PPI: Other basic inorganic chemical manufacturing (PCU325180325180). Accessed 2026-10-05.
3. U.S. Bureau of Labor Statistics. PPI: Inorganic acids, excluding nitric, sulfuric and phosphoric (PCU3251803251803). Accessed 2026-10-05.
4. U.S. Bureau of Labor Statistics. PPI: Other miscellaneous chemical product manufacturing (PCU325998325998). Accessed 2026-10-05.
5. U.S. Bureau of Labor Statistics. PPI: Final demand (WPUFD4). Accessed 2026-10-05.
6. U.S. Bureau of Labor Statistics. CPI-U: All items, U.S. city average (CUUR0000SA0). Accessed 2026-10-05.
7. U.S. Bureau of Labor Statistics. Schedule of Releases for the Producer Price Index. Accessed 2026-10-05.
8. U.S. Census Bureau. 2022 NAICS Index File. Accessed 2026-10-05.
9. U.S. International Trade Commission. Chlorinated Isocyanurates from China, Inv. 701-TA-501 (Second Review), Pub. 5677, November 2025. Accessed 2026-10-05.
10. U.S. International Trade Commission. Chlorinated Isocyanurates from China and Spain, Inv. 731-TA-1082-1083 (Third Review), Pub. 5391, December 2022. Accessed 2026-10-05.
11. U.S. Chemical Safety and Hazard Investigation Board. Bio-Lab Lake Charles Chemical Fire and Release (investigation page). Accessed 2026-10-05.
12. U.S. Chemical Safety and Hazard Investigation Board. Chemical Reaction, Decomposition, and Toxic Gas Release at Bio-Lab, Inc. (final report, April 24, 2023). Accessed 2026-10-05.
13. U.S. Chemical Safety and Hazard Investigation Board. CSB Releases Bio-Lab Conyers Final Investigation Report (July 21, 2026). Accessed 2026-10-05.
14. U.S. Department of Commerce, International Trade Administration. Notice of Antidumping Duty Order: Chlorinated Isocyanurates from the People's Republic of China, 70 FR 36561. Accessed 2026-10-05.
15. U.S. Department of Commerce, International Trade Administration. Chlorinated Isocyanurates from Spain: Notice of Antidumping Duty Order, 70 FR 36562. Accessed 2026-10-05.
16. U.S. Department of Commerce, International Trade Administration. Chlorinated Isocyanurates From the People's Republic of China: Countervailing Duty Order, 79 FR 67424. Accessed 2026-10-05.
17. U.S. International Trade Commission. Chlorinated Isocyanurates From China and Japan: Determinations, 79 FR 66404. Accessed 2026-10-05.
18. U.S. Department of Commerce, International Trade Administration. Continuation of Antidumping Duty Orders (China and Spain), 88 FR 10871. Accessed 2026-10-05.
19. U.S. Department of Commerce, International Trade Administration. Final Results of the Expedited Second Sunset Review of the CVD Order, 90 FR 36423. Accessed 2026-10-05.
20. U.S. Department of Commerce, International Trade Administration. Continuation of Countervailing Duty Order, 90 FR 54303. Accessed 2026-10-05.
21. U.S. Department of Commerce, International Trade Administration. China AD Administrative Review, Final Results 2023-2024, 91 FR 11954. Accessed 2026-10-05.
22. U.S. Department of Commerce, International Trade Administration. China AD Administrative Review, Preliminary Results 2024-2025, 91 FR 58631. Accessed 2026-10-05.
23. U.S. Department of Commerce, International Trade Administration. Spain AD Administrative Review, Final Results 2023-2024, 91 FR 33697. Accessed 2026-10-05.
24. U.S. Department of Commerce, International Trade Administration. Spain AD Administrative Review, Preliminary Results 2024-2025, 91 FR 56623. Accessed 2026-10-05.
25. U.S. Department of Commerce, International Trade Administration. China CVD Administrative Review, Final Results 2022, 90 FR 44031. Accessed 2026-10-05.
26. U.S. Department of Commerce, International Trade Administration. China CVD Administrative Review, Preliminary Results 2023, 91 FR 27027. Accessed 2026-10-05.
27. U.S. Bureau of Labor Statistics. PPI: Sodium hydroxide (caustic soda) (PCU3251803251804). Accessed 2026-10-05.
28. U.S. Bureau of Labor Statistics. PPI: Pumps and pumping equipment (PCU3339143339141). Accessed 2026-10-05.
29. U.S. Bureau of Labor Statistics. PPI: Heating equipment, except warm air furnaces (PCU333414333414). Accessed 2026-10-05.
30. U.S. Bureau of Labor Statistics. PPI: Sporting and athletic goods manufacturing (PCU339920339920). Accessed 2026-10-05.
31. U.S. Bureau of Labor Statistics. PPI: Inorganic acids, including hydrochloric, sulfuric acid and other (WPU0613020T). Accessed 2026-10-05.
32. U.S. Bureau of Labor Statistics. PPI: Water treating compounds (PCU325998325998A). Accessed 2026-10-05.
33. U.S. Bureau of Labor Statistics. PPI: Synthetic ammonia, nitric acid, ammonium compounds, and urea (WPU0652013A). Accessed 2026-10-05.
34. U.S. Bureau of Labor Statistics. CPI: Household cleaning products (CUUR0000SEHN01). Accessed 2026-10-05.
35. POOL CORP (SEC EDGAR). POOL CORP Form 10-K for fiscal 2020. Accessed 2026-10-05.
36. POOL CORP (SEC EDGAR). POOL CORP Form 10-K for fiscal 2021. Accessed 2026-10-05.
37. POOL CORP (SEC EDGAR). POOL CORP Form 10-K for fiscal 2022. Accessed 2026-10-05.
38. POOL CORP (SEC EDGAR). POOL CORP Form 10-Q for the quarter ended September 30, 2023. Accessed 2026-10-05.
39. POOL CORP (SEC EDGAR). POOL CORP Form 10-K for fiscal 2023. Accessed 2026-10-05.
40. POOL CORP (SEC EDGAR). POOL CORP Form 10-K for fiscal 2024. Accessed 2026-10-05.
41. POOL CORP (SEC EDGAR). POOL CORP Form 10-K for fiscal 2025. Accessed 2026-10-05.
42. POOL CORP (SEC EDGAR). POOL CORP Form 10-Q for the quarter ended June 30, 2026. Accessed 2026-10-05.
43. Leslie's, Inc. (SEC EDGAR). Leslie's, Inc. Form 10-K for fiscal 2021. Accessed 2026-10-05.
44. Leslie's, Inc. (SEC EDGAR). Leslie's, Inc. Form 10-K for fiscal 2022. Accessed 2026-10-05.
45. Leslie's, Inc. (SEC EDGAR). Leslie's, Inc. Form 10-K for fiscal 2023. Accessed 2026-10-05.
46. Leslie's, Inc. (SEC EDGAR). Leslie's, Inc. Form 10-K for fiscal 2024. Accessed 2026-10-05.
47. Leslie's, Inc. (SEC EDGAR). Leslie's, Inc. Form 10-K for fiscal 2025. Accessed 2026-10-05.
48. U.S. Department of Commerce, International Trade Administration. China AD Administrative Review 2023-2024, Correction, 91 FR 39601. Accessed 2026-10-05.
49. U.S. Bureau of Labor Statistics. Schedule of Releases for the Consumer Price Index. Accessed 2026-10-05.